./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/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_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/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 64bit --witnessprinter.graph.data.programhash 14cfbc3a2ba2bfe3a03d4d1ebff24b0baf1851f06dbbd2468b59e09322e4ce16 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:08:58,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:08:58,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:08:58,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:08:58,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:08:58,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:08:58,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:08:58,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:08:58,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:08:58,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:08:58,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:08:58,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:08:58,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:08:58,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:08:58,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:08:58,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:08:58,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:08:58,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:08:58,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:08:58,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:08:58,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:08:58,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:08:58,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:08:58,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:08:58,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:08:58,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:08:58,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:08:58,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:08:58,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:08:58,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:08:58,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:08:58,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:08:58,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:08:58,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:08:58,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:08:58,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:08:58,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:08:58,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:08:58,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:08:58,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:08:58,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:08:58,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:08:58,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:08:58,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:08:58,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:08:58,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:08:58,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:08:58,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:08:58,459 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:08:58,459 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:08:58,459 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:08:58,460 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:08:58,460 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:08:58,460 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:08:58,460 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:08:58,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:08:58,461 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:08:58,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:08:58,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:08:58,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:08:58,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:08:58,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:08:58,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:08:58,462 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:08:58,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:08:58,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:08:58,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:08:58,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:08:58,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:08:58,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:08:58,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:08:58,465 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:08:58,466 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_1131f772-aa1d-4836-bf14-d857c328e378/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14cfbc3a2ba2bfe3a03d4d1ebff24b0baf1851f06dbbd2468b59e09322e4ce16 [2021-10-21 19:08:58,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:08:58,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:08:58,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:08:58,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:08:58,785 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:08:58,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c [2021-10-21 19:08:58,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/data/ea9408f60/369df23279d343acab46d98cd64ac3c2/FLAGe5c8a6b73 [2021-10-21 19:08:59,400 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:08:59,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/sv-benchmarks/c/termination-numeric/Fibonacci01-2.c [2021-10-21 19:08:59,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/data/ea9408f60/369df23279d343acab46d98cd64ac3c2/FLAGe5c8a6b73 [2021-10-21 19:08:59,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/data/ea9408f60/369df23279d343acab46d98cd64ac3c2 [2021-10-21 19:08:59,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:08:59,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:08:59,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:08:59,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:08:59,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:08:59,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:08:59" (1/1) ... [2021-10-21 19:08:59,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ad6215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:08:59, skipping insertion in model container [2021-10-21 19:08:59,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:08:59" (1/1) ... [2021-10-21 19:08:59,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:08:59,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:09:00,008 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_1131f772-aa1d-4836-bf14-d857c328e378/sv-benchmarks/c/termination-numeric/Fibonacci01-2.c[761,774] [2021-10-21 19:09:00,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:09:00,032 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:09:00,054 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_1131f772-aa1d-4836-bf14-d857c328e378/sv-benchmarks/c/termination-numeric/Fibonacci01-2.c[761,774] [2021-10-21 19:09:00,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:09:00,073 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:09:00,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00 WrapperNode [2021-10-21 19:09:00,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:09:00,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:09:00,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:09:00,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:09:00,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:09:00,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:09:00,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:09:00,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:09:00,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:09:00,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:09:00,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:09:00,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:09:00,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (1/1) ... [2021-10-21 19:09:00,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:00,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:00,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:09:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-10-21 19:09:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-10-21 19:09:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:09:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:09:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:09:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:09:00,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:09:00,445 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:09:00,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:09:00 BoogieIcfgContainer [2021-10-21 19:09:00,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:09:00,448 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:09:00,449 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:09:00,453 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:09:00,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:09:00,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:08:59" (1/3) ... [2021-10-21 19:09:00,458 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46385012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:09:00, skipping insertion in model container [2021-10-21 19:09:00,458 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:09:00,458 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:09:00" (2/3) ... [2021-10-21 19:09:00,459 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46385012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:09:00, skipping insertion in model container [2021-10-21 19:09:00,459 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:09:00,459 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:09:00" (3/3) ... [2021-10-21 19:09:00,461 INFO L389 chiAutomizerObserver]: Analyzing ICFG Fibonacci01-2.c [2021-10-21 19:09:00,516 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:09:00,516 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:09:00,517 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:09:00,517 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:09:00,517 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:09:00,517 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:09:00,517 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:09:00,518 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:09:00,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:09:00,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:00,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:09:00,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:09:00,569 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:09:00,569 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:09:00,569 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:09:00,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:09:00,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:00,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:09:00,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:09:00,573 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:09:00,574 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:09:00,579 INFO L791 eck$LassoCheckResult]: Stem: 7#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 10#L29true assume !(main_~x~0 < 1); 12#L31true call main_#t~ret10 := fibonacci(main_~x~0);< 5#fibonacciENTRYtrue [2021-10-21 19:09:00,580 INFO L793 eck$LassoCheckResult]: Loop: 5#fibonacciENTRYtrue ~n := #in~n; 6#L17true assume !(~n < 1); 18#L19true assume !(1 == ~n); 16#L22true call #t~ret7 := fibonacci(~n - 1);< 5#fibonacciENTRYtrue [2021-10-21 19:09:00,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1325876, now seen corresponding path program 1 times [2021-10-21 19:09:00,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:00,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796879045] [2021-10-21 19:09:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:00,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:00,709 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:00,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:00,757 INFO L82 PathProgramCache]: Analyzing trace with hash 927646, now seen corresponding path program 1 times [2021-10-21 19:09:00,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:00,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018656251] [2021-10-21 19:09:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:00,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:00,765 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:00,771 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:00,774 INFO L82 PathProgramCache]: Analyzing trace with hash 408654161, now seen corresponding path program 1 times [2021-10-21 19:09:00,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:00,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956138923] [2021-10-21 19:09:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:00,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:00,815 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:00,868 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:01,087 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:01,095 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:01,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:01,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:01,096 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:09:01,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:01,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:01,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration1_Loop [2021-10-21 19:09:01,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:01,097 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:01,118 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 19:09:01,127 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 19:09:01,131 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 19:09:01,139 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 19:09:01,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:09:01,262 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:01,263 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:09:01,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:01,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:01,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:09:01,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:01,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:01,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:01,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:01,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:01,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:09:01,389 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:01,389 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret7=0} Honda state: {fibonacci_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:01,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:01,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:01,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:01,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:09:01,465 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:01,465 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:01,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:01,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:09:01,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:01,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:01,546 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:01,546 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:01,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:01,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,599 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:01,599 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:01,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:09:01,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:01,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:09:01,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:01,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:09:01,777 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:09:01,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-21 19:09:01,784 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:01,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:01,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:01,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:01,785 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:09:01,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:01,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:01,786 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration1_Loop [2021-10-21 19:09:01,786 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:01,786 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:01,788 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 19:09:01,792 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 19:09:01,795 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 19:09:01,799 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 19:09:01,802 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 19:09:01,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:01,887 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:09:01,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,902 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 19:09:01,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:09:01,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:01,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:01,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:01,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:01,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:01,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:01,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:01,935 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:01,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:01,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:01,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:01,970 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:01,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:09:01,975 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 19:09:01,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:01,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:01,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:01,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:01,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:01,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:01,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:01,994 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:02,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:02,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:02,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:02,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:02,042 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 19:09:02,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:02,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:02,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:02,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:02,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:02,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:02,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:02,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:09:02,069 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:02,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:02,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:02,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:02,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:02,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:09:02,115 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 19:09:02,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:02,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:02,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:02,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:02,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:02,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:02,124 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:02,138 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:02,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:02,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:02,164 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:02,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:09:02,166 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 19:09:02,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:02,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:02,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:02,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:02,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:02,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:02,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:02,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:09:02,220 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:09:02,220 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:09:02,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:02,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:02,226 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:02,228 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:09:02,228 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:09:02,228 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:09:02,229 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2021-10-21 19:09:02,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:09:02,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:02,260 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:09:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:02,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:09:02,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:02,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:09:02,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:02,452 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 19:09:02,476 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-21 19:09:02,477 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:09:02,622 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 51 states and 63 transitions. Complement of second has 12 states. [2021-10-21 19:09:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:09:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-21 19:09:02,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-21 19:09:02,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:02,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-21 19:09:02,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:02,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-21 19:09:02,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:02,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2021-10-21 19:09:02,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:02,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 26 states and 35 transitions. [2021-10-21 19:09:02,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-21 19:09:02,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-21 19:09:02,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 35 transitions. [2021-10-21 19:09:02,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:02,650 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-10-21 19:09:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 35 transitions. [2021-10-21 19:09:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-21 19:09:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:09:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-10-21 19:09:02,682 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-10-21 19:09:02,683 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-10-21 19:09:02,683 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:09:02,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2021-10-21 19:09:02,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:02,685 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:09:02,685 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:09:02,686 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:09:02,686 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:09:02,686 INFO L791 eck$LassoCheckResult]: Stem: 140#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 141#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 143#L29 assume !(main_~x~0 < 1); 131#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 133#fibonacciENTRY ~n := #in~n; 134#L17 assume !(~n < 1); 139#L19 assume !(1 == ~n); 129#L22 call #t~ret7 := fibonacci(~n - 1);< 135#fibonacciENTRY ~n := #in~n; 136#L17 assume ~n < 1;#res := 0; 137#fibonacciFINAL assume true; 142#fibonacciEXIT >#34#return; 128#L22-1 [2021-10-21 19:09:02,687 INFO L793 eck$LassoCheckResult]: Loop: 128#L22-1 call #t~ret8 := fibonacci(~n - 2);< 132#fibonacciENTRY ~n := #in~n; 148#L17 assume !(~n < 1); 147#L19 assume !(1 == ~n); 130#L22 call #t~ret7 := fibonacci(~n - 1);< 132#fibonacciENTRY ~n := #in~n; 148#L17 assume ~n < 1;#res := 0; 145#fibonacciFINAL assume true; 146#fibonacciEXIT >#34#return; 128#L22-1 [2021-10-21 19:09:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:02,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1923124650, now seen corresponding path program 1 times [2021-10-21 19:09:02,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:02,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639897727] [2021-10-21 19:09:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:02,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 19:09:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:02,789 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 19:09:02,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:09:02,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639897727] [2021-10-21 19:09:02,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639897727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:09:02,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:09:02,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:09:02,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620621848] [2021-10-21 19:09:02,794 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:09:02,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:02,795 INFO L82 PathProgramCache]: Analyzing trace with hash 481649848, now seen corresponding path program 1 times [2021-10-21 19:09:02,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:02,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796430090] [2021-10-21 19:09:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:02,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:09:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:02,885 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 19:09:02,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:09:02,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796430090] [2021-10-21 19:09:02,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796430090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:09:02,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:09:02,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:09:02,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948238205] [2021-10-21 19:09:02,887 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:09:02,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:09:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:09:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:09:02,902 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:09:02,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:09:03,013 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-10-21 19:09:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:09:03,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2021-10-21 19:09:03,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:03,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2021-10-21 19:09:03,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-21 19:09:03,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-21 19:09:03,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2021-10-21 19:09:03,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:03,019 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-21 19:09:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2021-10-21 19:09:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-21 19:09:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-21 19:09:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-10-21 19:09:03,026 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-21 19:09:03,026 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-21 19:09:03,026 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:09:03,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2021-10-21 19:09:03,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:03,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:09:03,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:09:03,029 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:09:03,029 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:09:03,029 INFO L791 eck$LassoCheckResult]: Stem: 215#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 216#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 219#L29 assume !(main_~x~0 < 1); 204#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 221#fibonacciENTRY ~n := #in~n; 210#L17 assume !(~n < 1); 214#L19 assume !(1 == ~n); 205#L22 call #t~ret7 := fibonacci(~n - 1);< 209#fibonacciENTRY ~n := #in~n; 211#L17 assume !(~n < 1); 227#L19 assume 1 == ~n;#res := 1; 226#fibonacciFINAL assume true; 225#fibonacciEXIT >#34#return; 203#L22-1 [2021-10-21 19:09:03,030 INFO L793 eck$LassoCheckResult]: Loop: 203#L22-1 call #t~ret8 := fibonacci(~n - 2);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume !(1 == ~n); 206#L22 call #t~ret7 := fibonacci(~n - 1);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume !(1 == ~n); 206#L22 call #t~ret7 := fibonacci(~n - 1);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume 1 == ~n;#res := 1; 222#fibonacciFINAL assume true; 223#fibonacciEXIT >#34#return; 203#L22-1 call #t~ret8 := fibonacci(~n - 2);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume ~n < 1;#res := 0; 212#fibonacciFINAL assume true; 217#fibonacciEXIT >#36#return; 218#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 220#fibonacciFINAL assume true; 224#fibonacciEXIT >#34#return; 203#L22-1 [2021-10-21 19:09:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash -512653656, now seen corresponding path program 1 times [2021-10-21 19:09:03,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:03,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224290677] [2021-10-21 19:09:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:03,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:03,073 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:03,108 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:03,109 INFO L82 PathProgramCache]: Analyzing trace with hash 319636608, now seen corresponding path program 1 times [2021-10-21 19:09:03,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:03,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889784035] [2021-10-21 19:09:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:03,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:03,124 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:03,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash 911295463, now seen corresponding path program 1 times [2021-10-21 19:09:03,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:03,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931412795] [2021-10-21 19:09:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:03,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 19:09:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-21 19:09:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:09:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-21 19:09:03,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:09:03,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931412795] [2021-10-21 19:09:03,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931412795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:03,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623734393] [2021-10-21 19:09:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:03,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:09:03,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:03,280 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:09:03,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:09:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:03,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:09:03,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-21 19:09:03,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623734393] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:03,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:09:03,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 19:09:03,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044315994] [2021-10-21 19:09:04,048 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:04,049 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:04,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:04,049 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:04,049 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:09:04,049 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:04,049 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:04,050 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:04,050 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration3_Loop [2021-10-21 19:09:04,050 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:04,050 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:04,051 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 19:09:04,053 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 19:09:04,056 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 19:09:04,074 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 19:09:04,169 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:04,169 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:09:04,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:04,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:04,173 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:04,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:04,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:04,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:09:04,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:04,201 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:04,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:04,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:04,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:04,236 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:04,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:09:04,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:04,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:04,272 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:04,272 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:04,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:04,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:04,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:04,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:04,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:04,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:04,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:09:04,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:04,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:04,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:04,406 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:04,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 19:09:04,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:09:04,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:05,313 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:09:05,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:05,319 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:05,319 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:05,319 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:05,319 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:05,319 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:09:05,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:05,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:05,320 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:05,320 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration3_Loop [2021-10-21 19:09:05,320 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:05,320 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:05,321 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 19:09:05,339 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 19:09:05,345 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 19:09:05,347 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 19:09:05,422 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:05,423 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:09:05,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:05,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:05,425 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:05,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:09:05,450 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 19:09:05,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:05,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:05,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:05,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:05,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:05,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:05,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:05,474 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:05,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:05,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:05,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:05,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:05,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:09:05,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:09:05,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:05,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:05,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:05,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:05,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:05,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:05,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:05,521 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:05,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:05,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:05,544 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:05,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:09:05,549 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 19:09:05,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:05,558 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:05,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:05,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:05,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:05,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:05,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:05,579 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:05,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:05,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:05,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:05,604 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:05,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 19:09:05,609 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 19:09:05,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:05,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:05,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:05,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:05,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:05,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:05,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:05,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:09:05,638 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:09:05,638 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:09:05,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:05,640 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:05,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:09:05,641 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:09:05,641 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:09:05,641 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:09:05,641 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-21 19:09:05,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:05,662 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:09:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:05,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:09:05,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:05,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:09:05,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:09:06,184 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-21 19:09:06,184 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 19:09:06,571 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 160 states and 216 transitions. Complement of second has 48 states. [2021-10-21 19:09:06,572 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 19:09:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 19:09:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 42 transitions. [2021-10-21 19:09:06,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 22 letters. [2021-10-21 19:09:06,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:06,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 35 letters. Loop has 22 letters. [2021-10-21 19:09:06,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:06,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 44 letters. [2021-10-21 19:09:06,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:06,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 216 transitions. [2021-10-21 19:09:06,590 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-10-21 19:09:06,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:06,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 129 states and 181 transitions. [2021-10-21 19:09:06,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2021-10-21 19:09:06,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-10-21 19:09:06,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 181 transitions. [2021-10-21 19:09:06,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:06,612 INFO L681 BuchiCegarLoop]: Abstraction has 129 states and 181 transitions. [2021-10-21 19:09:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 181 transitions. [2021-10-21 19:09:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2021-10-21 19:09:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2021-10-21 19:09:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2021-10-21 19:09:06,631 INFO L704 BuchiCegarLoop]: Abstraction has 107 states and 141 transitions. [2021-10-21 19:09:06,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:09:06,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:09:06,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:09:06,632 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-21 19:09:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:09:06,712 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2021-10-21 19:09:06,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:09:06,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 58 transitions. [2021-10-21 19:09:06,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:06,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 54 transitions. [2021-10-21 19:09:06,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-10-21 19:09:06,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-10-21 19:09:06,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2021-10-21 19:09:06,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:06,719 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-21 19:09:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2021-10-21 19:09:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-10-21 19:09:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2021-10-21 19:09:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-21 19:09:06,725 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-21 19:09:06,725 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-21 19:09:06,725 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:09:06,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2021-10-21 19:09:06,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:09:06,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:09:06,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:09:06,730 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:09:06,730 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:09:06,731 INFO L791 eck$LassoCheckResult]: Stem: 888#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 889#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 892#L29 assume !(main_~x~0 < 1); 878#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 880#fibonacciENTRY ~n := #in~n; 881#L17 assume !(~n < 1); 887#L19 assume !(1 == ~n); 877#L22 call #t~ret7 := fibonacci(~n - 1);< 879#fibonacciENTRY ~n := #in~n; 883#L17 assume !(~n < 1); 910#L19 assume !(1 == ~n); 882#L22 call #t~ret7 := fibonacci(~n - 1);< 879#fibonacciENTRY ~n := #in~n; 884#L17 assume !(~n < 1); 894#L19 assume 1 == ~n;#res := 1; 895#fibonacciFINAL assume true; 909#fibonacciEXIT >#34#return; 904#L22-1 call #t~ret8 := fibonacci(~n - 2);< 905#fibonacciENTRY ~n := #in~n; 908#L17 assume ~n < 1;#res := 0; 906#fibonacciFINAL assume true; 903#fibonacciEXIT >#36#return; 902#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 901#fibonacciFINAL assume true; 900#fibonacciEXIT >#34#return; 874#L22-1 [2021-10-21 19:09:06,731 INFO L793 eck$LassoCheckResult]: Loop: 874#L22-1 call #t~ret8 := fibonacci(~n - 2);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume !(1 == ~n); 873#L22 call #t~ret7 := fibonacci(~n - 1);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume !(1 == ~n); 873#L22 call #t~ret7 := fibonacci(~n - 1);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume 1 == ~n;#res := 1; 898#fibonacciFINAL assume true; 907#fibonacciEXIT >#34#return; 872#L22-1 call #t~ret8 := fibonacci(~n - 2);< 875#fibonacciENTRY ~n := #in~n; 885#L17 assume ~n < 1;#res := 0; 886#fibonacciFINAL assume true; 890#fibonacciEXIT >#36#return; 891#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 893#fibonacciFINAL assume true; 896#fibonacciEXIT >#34#return; 874#L22-1 [2021-10-21 19:09:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:06,731 INFO L82 PathProgramCache]: Analyzing trace with hash 506180814, now seen corresponding path program 2 times [2021-10-21 19:09:06,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:06,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330703750] [2021-10-21 19:09:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:06,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:06,751 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:06,772 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:06,779 INFO L82 PathProgramCache]: Analyzing trace with hash 319636608, now seen corresponding path program 2 times [2021-10-21 19:09:06,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:06,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752353337] [2021-10-21 19:09:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:06,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:06,800 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:06,809 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:06,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1200508531, now seen corresponding path program 3 times [2021-10-21 19:09:06,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:06,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126787438] [2021-10-21 19:09:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:06,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 19:09:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:09:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-10-21 19:09:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:09:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-21 19:09:07,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:09:07,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126787438] [2021-10-21 19:09:07,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126787438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:07,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659732553] [2021-10-21 19:09:07,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:09:07,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:09:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:07,045 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:09:07,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 19:09:07,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-21 19:09:07,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:09:07,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:09:07,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-21 19:09:07,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659732553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:07,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:09:07,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-10-21 19:09:07,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906104926] [2021-10-21 19:09:07,684 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:07,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:07,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:07,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:07,684 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:09:07,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:07,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:07,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:07,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration4_Loop [2021-10-21 19:09:07,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:07,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:07,685 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 19:09:07,693 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 19:09:07,695 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 19:09:07,698 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 19:09:07,735 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:07,735 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:09:07,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:07,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:07,739 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:07,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:09:07,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:07,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:07,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:07,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:07,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:07,779 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:07,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:09:07,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:09:07,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:08,542 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:09:08,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:08,544 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:08,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:08,545 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:08,545 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:08,545 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:09:08,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:08,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:08,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:08,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration4_Loop [2021-10-21 19:09:08,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:08,545 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:08,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:09:08,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:09:08,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:09:08,563 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 19:09:08,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:08,594 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:09:08,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:08,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:08,600 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:08,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:09:08,603 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 19:09:08,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:08,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:08,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:08,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:08,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:08,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:08,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:08,632 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:09:08,635 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 19:09:08,635 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:09:08,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:08,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:08,637 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:08,642 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:09:08,642 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:09:08,642 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:09:08,642 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-21 19:09:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:09:08,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:08,665 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:09:08,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:08,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:09:08,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:09,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:09:09,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:09,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:09:09,384 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-21 19:09:09,385 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:09:09,474 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2021-10-21 19:09:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:09:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2021-10-21 19:09:09,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-21 19:09:09,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:09,476 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:09:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:09,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:09:09,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:09,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:09:09,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:09:10,067 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-21 19:09:10,069 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:09:10,179 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2021-10-21 19:09:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:09:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2021-10-21 19:09:10,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-21 19:09:10,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:10,181 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:09:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:10,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:09:10,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:10,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:09:10,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:09:10,709 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 7 loop predicates [2021-10-21 19:09:10,709 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:09:11,008 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 345 states and 444 transitions. Complement of second has 125 states. [2021-10-21 19:09:11,009 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 19:09:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:09:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2021-10-21 19:09:11,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-21 19:09:11,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:11,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 47 letters. Loop has 22 letters. [2021-10-21 19:09:11,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:11,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 44 letters. [2021-10-21 19:09:11,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:11,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 444 transitions. [2021-10-21 19:09:11,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:09:11,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 220 states and 297 transitions. [2021-10-21 19:09:11,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2021-10-21 19:09:11,032 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2021-10-21 19:09:11,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 297 transitions. [2021-10-21 19:09:11,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:11,033 INFO L681 BuchiCegarLoop]: Abstraction has 220 states and 297 transitions. [2021-10-21 19:09:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 297 transitions. [2021-10-21 19:09:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2021-10-21 19:09:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 112 states have internal predecessors, (122), 38 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (59), 36 states have call predecessors, (59), 36 states have call successors, (59) [2021-10-21 19:09:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2021-10-21 19:09:11,069 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 223 transitions. [2021-10-21 19:09:11,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:09:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:09:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:09:11,070 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 14 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 9 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2021-10-21 19:09:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:09:11,256 INFO L93 Difference]: Finished difference Result 273 states and 374 transitions. [2021-10-21 19:09:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:09:11,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 273 states and 374 transitions. [2021-10-21 19:09:11,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:09:11,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 273 states to 272 states and 372 transitions. [2021-10-21 19:09:11,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-21 19:09:11,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 153 [2021-10-21 19:09:11,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 372 transitions. [2021-10-21 19:09:11,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:11,270 INFO L681 BuchiCegarLoop]: Abstraction has 272 states and 372 transitions. [2021-10-21 19:09:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 372 transitions. [2021-10-21 19:09:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 218. [2021-10-21 19:09:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 135 states have (on average 1.1185185185185185) internal successors, (151), 140 states have internal predecessors, (151), 47 states have call successors, (55), 28 states have call predecessors, (55), 36 states have return successors, (92), 49 states have call predecessors, (92), 45 states have call successors, (92) [2021-10-21 19:09:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 298 transitions. [2021-10-21 19:09:11,290 INFO L704 BuchiCegarLoop]: Abstraction has 218 states and 298 transitions. [2021-10-21 19:09:11,291 INFO L587 BuchiCegarLoop]: Abstraction has 218 states and 298 transitions. [2021-10-21 19:09:11,291 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:09:11,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 298 transitions. [2021-10-21 19:09:11,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:09:11,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:09:11,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:09:11,295 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 6, 6, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-21 19:09:11,295 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:09:11,295 INFO L791 eck$LassoCheckResult]: Stem: 2661#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2662#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 2667#L29 assume !(main_~x~0 < 1); 2668#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 2672#fibonacciENTRY ~n := #in~n; 2707#L17 assume !(~n < 1); 2705#L19 assume !(1 == ~n); 2698#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2708#L17 assume !(~n < 1); 2737#L19 assume 1 == ~n;#res := 1; 2736#fibonacciFINAL assume true; 2734#fibonacciEXIT >#34#return; 2730#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2732#fibonacciENTRY ~n := #in~n; 2743#L17 assume ~n < 1;#res := 0; 2741#fibonacciFINAL assume true; 2729#fibonacciEXIT >#36#return; 2728#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2727#fibonacciFINAL assume true; 2717#fibonacciEXIT >#34#return; 2712#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2716#fibonacciENTRY ~n := #in~n; 2722#L17 assume !(~n < 1); 2720#L19 assume 1 == ~n;#res := 1; 2718#fibonacciFINAL assume true; 2711#fibonacciEXIT >#36#return; 2699#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2702#fibonacciFINAL assume true; 2696#fibonacciEXIT >#34#return; 2656#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2691#fibonacciENTRY ~n := #in~n; 2689#L17 assume !(~n < 1); 2690#L19 assume !(1 == ~n); 2655#L22 call #t~ret7 := fibonacci(~n - 1);< 2658#fibonacciENTRY ~n := #in~n; 2826#L17 assume !(~n < 1); 2827#L19 assume !(1 == ~n); 2804#L22 call #t~ret7 := fibonacci(~n - 1);< 2806#fibonacciENTRY [2021-10-21 19:09:11,296 INFO L793 eck$LassoCheckResult]: Loop: 2806#fibonacciENTRY ~n := #in~n; 2818#L17 assume !(~n < 1); 2816#L19 assume !(1 == ~n); 2805#L22 call #t~ret7 := fibonacci(~n - 1);< 2806#fibonacciENTRY [2021-10-21 19:09:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:11,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2139327112, now seen corresponding path program 4 times [2021-10-21 19:09:11,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:11,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259561413] [2021-10-21 19:09:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:11,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:11,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-21 19:09:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:09:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:09:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-21 19:09:11,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:09:11,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259561413] [2021-10-21 19:09:11,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259561413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:11,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848932468] [2021-10-21 19:09:11,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:09:11,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:09:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:11,438 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:09:11,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-21 19:09:11,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:09:11,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:09:11,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:09:11,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-21 19:09:11,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848932468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:11,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:09:11,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2021-10-21 19:09:11,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925877245] [2021-10-21 19:09:11,817 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:09:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:11,818 INFO L82 PathProgramCache]: Analyzing trace with hash 927646, now seen corresponding path program 2 times [2021-10-21 19:09:11,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:11,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693660880] [2021-10-21 19:09:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:11,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:11,824 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:11,826 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:11,865 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:11,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:11,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:11,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:11,866 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:09:11,866 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:11,866 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:11,866 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:11,866 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration5_Loop [2021-10-21 19:09:11,866 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:11,866 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:11,867 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 19:09:11,869 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 19:09:11,870 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 19:09:11,872 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 19:09:11,874 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 19:09:11,905 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:11,905 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:09:11,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:11,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:11,907 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:11,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:11,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:11,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 19:09:11,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:11,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:11,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:11,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:11,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:11,977 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:11,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:11,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:11,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 19:09:11,997 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:11,997 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret7=0} Honda state: {fibonacci_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:12,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,034 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:12,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:12,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:09:12,046 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:12,046 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:12,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,069 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 19:09:12,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:12,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:12,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:12,081 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:12,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,104 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 19:09:12,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:12,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:12,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,138 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 19:09:12,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:09:12,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:12,212 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:09:12,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-21 19:09:12,214 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:12,214 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:12,214 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:12,214 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:12,214 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:09:12,214 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,214 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:12,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:12,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration5_Loop [2021-10-21 19:09:12,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:12,214 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:12,215 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 19:09:12,217 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 19:09:12,218 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 19:09:12,220 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 19:09:12,222 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 19:09:12,274 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:12,274 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:09:12,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,276 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 19:09:12,290 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 19:09:12,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:12,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:12,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:12,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:12,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:12,300 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:12,300 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:12,315 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:12,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,338 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 19:09:12,363 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 19:09:12,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:12,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:12,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:12,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:12,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:12,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:12,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:12,377 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:12,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,399 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 19:09:12,401 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 19:09:12,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:12,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:12,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:12,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:12,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:12,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:12,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:12,425 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:12,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,445 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 19:09:12,446 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 19:09:12,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:12,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:12,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:12,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:12,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:12,454 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:12,454 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:12,455 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:12,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-10-21 19:09:12,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,474 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 19:09:12,476 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 19:09:12,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:12,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:12,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:12,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:12,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:12,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:12,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:12,491 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:09:12,493 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:09:12,493 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:09:12,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:12,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:12,495 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:12,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 19:09:12,496 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:09:12,496 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:09:12,496 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:09:12,496 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2021-10-21 19:09:12,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:12,515 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:09:12,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:12,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:09:12,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:13,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:13,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:09:13,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:13,257 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 19:09:13,258 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 19:09:13,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:13,321 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 240 states and 323 transitions. Complement of second has 13 states. [2021-10-21 19:09:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-21 19:09:13,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-21 19:09:13,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:13,324 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:09:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:13,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:09:13,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:13,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:09:13,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:14,014 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 19:09:14,016 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 19:09:14,017 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:14,076 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 240 states and 323 transitions. Complement of second has 13 states. [2021-10-21 19:09:14,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-21 19:09:14,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-21 19:09:14,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:14,078 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:09:14,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:14,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:09:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:14,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:09:14,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:14,812 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 19:09:14,813 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 3 loop predicates [2021-10-21 19:09:14,813 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:14,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 291 states and 376 transitions. Complement of second has 14 states. [2021-10-21 19:09:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-10-21 19:09:14,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-21 19:09:14,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:14,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 55 letters. Loop has 4 letters. [2021-10-21 19:09:14,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:14,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 51 letters. Loop has 8 letters. [2021-10-21 19:09:14,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:14,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 291 states and 376 transitions. [2021-10-21 19:09:14,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:09:14,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 291 states to 236 states and 319 transitions. [2021-10-21 19:09:14,906 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 108 [2021-10-21 19:09:14,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 111 [2021-10-21 19:09:14,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 236 states and 319 transitions. [2021-10-21 19:09:14,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:14,907 INFO L681 BuchiCegarLoop]: Abstraction has 236 states and 319 transitions. [2021-10-21 19:09:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states and 319 transitions. [2021-10-21 19:09:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-10-21 19:09:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 151 states have internal predecessors, (162), 48 states have call successors, (56), 29 states have call predecessors, (56), 36 states have return successors, (94), 49 states have call predecessors, (94), 46 states have call successors, (94) [2021-10-21 19:09:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 312 transitions. [2021-10-21 19:09:14,920 INFO L704 BuchiCegarLoop]: Abstraction has 230 states and 312 transitions. [2021-10-21 19:09:14,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:09:14,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:09:14,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:09:14,922 INFO L87 Difference]: Start difference. First operand 230 states and 312 transitions. Second operand has 13 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-21 19:09:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:09:15,063 INFO L93 Difference]: Finished difference Result 415 states and 605 transitions. [2021-10-21 19:09:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:09:15,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 415 states and 605 transitions. [2021-10-21 19:09:15,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:09:15,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 415 states to 402 states and 587 transitions. [2021-10-21 19:09:15,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 214 [2021-10-21 19:09:15,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-10-21 19:09:15,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 587 transitions. [2021-10-21 19:09:15,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:15,081 INFO L681 BuchiCegarLoop]: Abstraction has 402 states and 587 transitions. [2021-10-21 19:09:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states and 587 transitions. [2021-10-21 19:09:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 292. [2021-10-21 19:09:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 64 states have call successors, (76), 37 states have call predecessors, (76), 46 states have return successors, (146), 69 states have call predecessors, (146), 62 states have call successors, (146) [2021-10-21 19:09:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 426 transitions. [2021-10-21 19:09:15,098 INFO L704 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:09:15,099 INFO L587 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:09:15,099 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:09:15,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 292 states and 426 transitions. [2021-10-21 19:09:15,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:09:15,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:09:15,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:09:15,104 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [14, 12, 9, 9, 8, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2021-10-21 19:09:15,104 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:09:15,105 INFO L791 eck$LassoCheckResult]: Stem: 5102#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5103#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 5107#L29 assume !(main_~x~0 < 1); 5108#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 5115#fibonacciENTRY ~n := #in~n; 5147#L17 assume !(~n < 1); 5146#L19 assume !(1 == ~n); 5138#L22 call #t~ret7 := fibonacci(~n - 1);< 5145#fibonacciENTRY ~n := #in~n; 5280#L17 assume !(~n < 1); 5281#L19 assume !(1 == ~n); 5139#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5283#L17 assume !(~n < 1); 5148#L19 assume !(1 == ~n); 5137#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5283#L17 assume !(~n < 1); 5148#L19 assume !(1 == ~n); 5137#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5283#L17 assume !(~n < 1); 5148#L19 assume !(1 == ~n); 5137#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5282#L17 assume !(~n < 1); 5299#L19 assume 1 == ~n;#res := 1; 5298#fibonacciFINAL assume true; 5295#fibonacciEXIT >#34#return; 5291#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5292#fibonacciENTRY ~n := #in~n; 5297#L17 assume ~n < 1;#res := 0; 5294#fibonacciFINAL assume true; 5290#fibonacciEXIT >#36#return; 5288#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5287#fibonacciFINAL assume true; 5286#fibonacciEXIT >#34#return; 5184#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5186#fibonacciENTRY ~n := #in~n; 5225#L17 assume !(~n < 1); 5190#L19 assume 1 == ~n;#res := 1; 5188#fibonacciFINAL assume true; 5183#fibonacciEXIT >#36#return; 5171#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5169#fibonacciFINAL assume true; 5164#fibonacciEXIT >#34#return; 5162#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5166#fibonacciENTRY ~n := #in~n; 5194#L17 assume !(~n < 1); 5191#L19 assume !(1 == ~n); 5192#L22 call #t~ret7 := fibonacci(~n - 1);< 5209#fibonacciENTRY ~n := #in~n; 5284#L17 assume !(~n < 1); 5211#L19 assume 1 == ~n;#res := 1; 5210#fibonacciFINAL assume true; 5207#fibonacciEXIT >#34#return; 5175#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5180#fibonacciENTRY ~n := #in~n; 5206#L17 assume ~n < 1;#res := 0; 5205#fibonacciFINAL assume true; 5172#fibonacciEXIT >#36#return; 5178#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5167#fibonacciFINAL assume true; 5161#fibonacciEXIT >#36#return; 5140#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5143#fibonacciFINAL assume true; 5136#fibonacciEXIT >#34#return; 5127#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5132#fibonacciENTRY ~n := #in~n; 5126#L17 assume !(~n < 1); 5129#L19 assume !(1 == ~n); 5096#L22 call #t~ret7 := fibonacci(~n - 1);< 5301#fibonacciENTRY ~n := #in~n; 5094#L17 assume !(~n < 1); 5097#L19 assume !(1 == ~n); 5087#L22 call #t~ret7 := fibonacci(~n - 1);< 5085#fibonacciENTRY ~n := #in~n; 5089#L17 assume !(~n < 1); 5342#L19 assume !(1 == ~n); 5086#L22 [2021-10-21 19:09:15,105 INFO L793 eck$LassoCheckResult]: Loop: 5086#L22 call #t~ret7 := fibonacci(~n - 1);< 5085#fibonacciENTRY ~n := #in~n; 5089#L17 assume !(~n < 1); 5342#L19 assume !(1 == ~n); 5086#L22 [2021-10-21 19:09:15,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:15,106 INFO L82 PathProgramCache]: Analyzing trace with hash -970341416, now seen corresponding path program 5 times [2021-10-21 19:09:15,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:15,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631256695] [2021-10-21 19:09:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:15,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-21 19:09:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:09:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:09:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-21 19:09:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:09:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:09:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 125 proven. 115 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-21 19:09:15,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:09:15,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631256695] [2021-10-21 19:09:15,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631256695] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:15,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466216404] [2021-10-21 19:09:15,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:09:15,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:09:15,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:15,346 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:09:15,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-21 19:09:15,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-21 19:09:15,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:09:15,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:09:15,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 129 proven. 109 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-21 19:09:15,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466216404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:09:15,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:09:15,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 16 [2021-10-21 19:09:15,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800683062] [2021-10-21 19:09:15,979 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:09:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1906756, now seen corresponding path program 3 times [2021-10-21 19:09:15,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:09:15,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915960721] [2021-10-21 19:09:15,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:09:15,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:09:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:15,988 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:09:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:09:15,991 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:09:16,039 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:16,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:16,040 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:16,040 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:16,040 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:09:16,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:16,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:16,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:16,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration6_Loop [2021-10-21 19:09:16,041 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:16,041 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:16,041 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 19:09:16,043 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 19:09:16,050 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 19:09:16,052 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 19:09:16,097 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:16,097 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:09:16,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:16,101 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:16,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:16,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:16,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 19:09:16,137 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:09:16,137 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:09:16,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:16,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:16,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:16,176 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:16,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:09:16,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:16,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 19:09:16,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-21 19:09:16,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:16,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:16,219 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:16,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-21 19:09:16,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:09:16,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:09:22,259 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:09:22,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:22,268 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:09:22,268 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:09:22,268 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:09:22,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:09:22,268 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:09:22,269 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:22,269 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:09:22,269 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:09:22,269 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration6_Loop [2021-10-21 19:09:22,269 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:09:22,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:09:22,269 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 19:09:22,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:09:22,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:09:22,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:09:22,315 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:09:22,315 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:09:22,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:22,316 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:22,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 19:09:22,318 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 19:09:22,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:22,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:22,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:22,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:22,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:22,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:22,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:22,327 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:22,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:22,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:22,346 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:22,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 19:09:22,348 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 19:09:22,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:22,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:22,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:22,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:22,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:22,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:22,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:22,357 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:22,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:22,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:22,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:22,376 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:22,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 19:09:22,377 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 19:09:22,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:22,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:22,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:22,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:22,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:22,385 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:22,385 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:22,386 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:09:22,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-21 19:09:22,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:22,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:22,406 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:22,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 19:09:22,407 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 19:09:22,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:09:22,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:09:22,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:09:22,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:09:22,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:09:22,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:09:22,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:09:22,453 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:09:22,457 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:09:22,457 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:09:22,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:09:22,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:09:22,464 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:09:22,466 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:09:22,466 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:09:22,466 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:09:22,466 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-21 19:09:22,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 19:09:22,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:22,497 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:09:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:22,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:22,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:09:22,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:23,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:09:23,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:23,551 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 19:09:23,551 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-21 19:09:23,552 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:23,603 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 301 states and 436 transitions. Complement of second has 18 states. [2021-10-21 19:09:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2021-10-21 19:09:23,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 79 letters. Loop has 4 letters. [2021-10-21 19:09:23,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:23,604 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:09:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:23,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:09:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:24,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:09:24,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:24,741 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 19:09:24,742 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-21 19:09:24,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:24,817 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 307 states and 442 transitions. Complement of second has 17 states. [2021-10-21 19:09:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-10-21 19:09:24,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 79 letters. Loop has 4 letters. [2021-10-21 19:09:24,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:24,820 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:09:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:09:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:24,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:09:24,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:09:26,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:09:26,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:09:26,054 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 19:09:26,057 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 4 loop predicates [2021-10-21 19:09:26,057 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:26,131 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 354 states and 504 transitions. Complement of second has 27 states. [2021-10-21 19:09:26,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:09:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:09:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2021-10-21 19:09:26,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 79 letters. Loop has 4 letters. [2021-10-21 19:09:26,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:26,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 83 letters. Loop has 4 letters. [2021-10-21 19:09:26,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:26,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 79 letters. Loop has 8 letters. [2021-10-21 19:09:26,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:09:26,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 354 states and 504 transitions. [2021-10-21 19:09:26,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:09:26,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 354 states to 292 states and 426 transitions. [2021-10-21 19:09:26,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 136 [2021-10-21 19:09:26,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2021-10-21 19:09:26,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 426 transitions. [2021-10-21 19:09:26,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:09:26,147 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:09:26,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 426 transitions. [2021-10-21 19:09:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-21 19:09:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 64 states have call successors, (76), 37 states have call predecessors, (76), 46 states have return successors, (146), 69 states have call predecessors, (146), 62 states have call successors, (146) [2021-10-21 19:09:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 426 transitions. [2021-10-21 19:09:26,169 INFO L704 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:09:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:09:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:09:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:09:26,170 INFO L87 Difference]: Start difference. First operand 292 states and 426 transitions. Second operand has 17 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2021-10-21 19:09:26,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:09:26,375 INFO L93 Difference]: Finished difference Result 417 states and 613 transitions. [2021-10-21 19:09:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:09:26,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 417 states and 613 transitions. [2021-10-21 19:09:26,383 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:09:26,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 417 states to 0 states and 0 transitions. [2021-10-21 19:09:26,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:09:26,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:09:26,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:09:26,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:09:26,384 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:09:26,384 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:09:26,384 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:09:26,384 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:09:26,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:09:26,384 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:09:26,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:09:26,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:09:26 BoogieIcfgContainer [2021-10-21 19:09:26,390 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:09:26,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:09:26,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:09:26,391 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:09:26,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:09:00" (3/4) ... [2021-10-21 19:09:26,394 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:09:26,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:09:26,396 INFO L168 Benchmark]: Toolchain (without parser) took 26637.15 ms. Allocated memory was 90.2 MB in the beginning and 167.8 MB in the end (delta: 77.6 MB). Free memory was 57.1 MB in the beginning and 97.4 MB in the end (delta: -40.3 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:26,396 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:09:26,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.62 ms. Allocated memory is still 90.2 MB. Free memory was 56.9 MB in the beginning and 68.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:26,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 90.2 MB. Free memory was 68.3 MB in the beginning and 67.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:09:26,397 INFO L168 Benchmark]: Boogie Preprocessor took 27.23 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:26,397 INFO L168 Benchmark]: RCFGBuilder took 296.41 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 56.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:26,398 INFO L168 Benchmark]: BuchiAutomizer took 25941.74 ms. Allocated memory was 90.2 MB in the beginning and 167.8 MB in the end (delta: 77.6 MB). Free memory was 56.7 MB in the beginning and 98.4 MB in the end (delta: -41.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:26,398 INFO L168 Benchmark]: Witness Printer took 3.72 ms. Allocated memory is still 167.8 MB. Free memory was 98.4 MB in the beginning and 97.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:26,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.62 ms. Allocated memory is still 90.2 MB. Free memory was 56.9 MB in the beginning and 68.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 90.2 MB. Free memory was 68.3 MB in the beginning and 67.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.23 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 296.41 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 56.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 25941.74 ms. Allocated memory was 90.2 MB in the beginning and 167.8 MB in the end (delta: 77.6 MB). Free memory was 56.7 MB in the beginning and 98.4 MB in the end (delta: -41.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.72 ms. Allocated memory is still 167.8 MB. Free memory was 98.4 MB in the beginning and 97.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. 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 10 terminating modules (5 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. One nondeterministic module has affine ranking function n and consists of 6 locations. 5 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 25.8s and 7 iterations. TraceHistogramMax:14. Analysis of lassos took 15.0s. Construction of modules took 0.8s. Büchi inclusion checks took 9.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 156.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 248 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 292 states and ocurred in iteration 5. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 206 SDtfs, 480 SDslu, 271 SDs, 0 SdLazy, 817 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 838.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI1 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf94 lsp94 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq181 hnf93 smp75 dnf100 smp100 tf110 neg96 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:09:26,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:26,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-21 19:09:26,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:27,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:09:27,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1131f772-aa1d-4836-bf14-d857c328e378/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...