./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:30:32,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:32,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:32,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:32,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:32,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:32,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:32,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:32,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:32,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:32,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:32,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:32,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:32,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:32,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:32,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:32,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:32,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:32,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:32,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:32,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:32,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:32,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:32,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:32,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:32,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:32,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:32,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:32,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:32,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:32,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:32,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:32,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:32,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:32,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:32,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:32,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:32,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:32,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:32,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:32,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:32,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 10:30:32,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:32,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:32,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:32,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:32,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:32,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:32,330 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:32,330 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 10:30:32,330 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 10:30:32,330 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 10:30:32,331 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 10:30:32,331 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 10:30:32,332 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 10:30:32,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:32,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:32,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:30:32,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:32,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:32,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:32,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 10:30:32,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 10:30:32,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 10:30:32,333 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:32,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:32,334 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 10:30:32,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:32,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 10:30:32,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:32,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:32,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:32,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:32,336 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 10:30:32,337 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_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2022-11-20 10:30:32,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:32,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:32,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:32,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:32,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:32,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/recursive/Fibonacci02.c [2022-11-20 10:30:35,856 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:36,031 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:36,032 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/sv-benchmarks/c/recursive/Fibonacci02.c [2022-11-20 10:30:36,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/data/623224f9b/6549ffe97f01409eb04526e9b50df394/FLAGafb6684f0 [2022-11-20 10:30:36,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/data/623224f9b/6549ffe97f01409eb04526e9b50df394 [2022-11-20 10:30:36,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:36,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:36,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:36,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:36,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:36,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496912d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36, skipping insertion in model container [2022-11-20 10:30:36,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:36,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:36,295 WARN L237 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_90c7acc5-4e75-411b-b25e-e1132b4f667e/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-11-20 10:30:36,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:36,309 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:36,324 WARN L237 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_90c7acc5-4e75-411b-b25e-e1132b4f667e/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-11-20 10:30:36,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:36,338 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:36,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36 WrapperNode [2022-11-20 10:30:36,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:36,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:36,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:36,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:36,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,370 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-20 10:30:36,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:36,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:36,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:36,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:36,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:36,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:36,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:36,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:36,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:36,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:36,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:36,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-11-20 10:30:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-11-20 10:30:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:36,536 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:36,538 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:36,632 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:36,638 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:36,638 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:30:36,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:36 BoogieIcfgContainer [2022-11-20 10:30:36,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:36,641 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 10:30:36,641 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 10:30:36,644 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 10:30:36,644 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:30:36,645 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:30:36" (1/3) ... [2022-11-20 10:30:36,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39422ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:30:36, skipping insertion in model container [2022-11-20 10:30:36,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:30:36,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36" (2/3) ... [2022-11-20 10:30:36,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39422ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:30:36, skipping insertion in model container [2022-11-20 10:30:36,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:30:36,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:36" (3/3) ... [2022-11-20 10:30:36,648 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci02.c [2022-11-20 10:30:36,706 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 10:30:36,706 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 10:30:36,706 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 10:30:36,706 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 10:30:36,706 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 10:30:36,706 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 10:30:36,707 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 10:30:36,707 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 10:30:36,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-11-20 10:30:36,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 10:30:36,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:30:36,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:30:36,741 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:30:36,742 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 10:30:36,742 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 10:30:36,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-11-20 10:30:36,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 10:30:36,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:30:36,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:30:36,745 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:30:36,745 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 10:30:36,754 INFO L748 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 10#L29true call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 4#fibonacciENTRYtrue [2022-11-20 10:30:36,754 INFO L750 eck$LassoCheckResult]: Loop: 4#fibonacciENTRYtrue ~n := #in~n; 5#L17true assume !(~n < 1); 17#L19true assume !(1 == ~n); 16#L22true call #t~ret4 := fibonacci(~n - 1);< 4#fibonacciENTRYtrue [2022-11-20 10:30:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 42781, now seen corresponding path program 1 times [2022-11-20 10:30:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:36,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288631668] [2022-11-20 10:30:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:36,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:36,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash 927641, now seen corresponding path program 1 times [2022-11-20 10:30:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:36,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372893822] [2022-11-20 10:30:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:36,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:36,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:36,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 854450357, now seen corresponding path program 1 times [2022-11-20 10:30:36,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:36,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24299467] [2022-11-20 10:30:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:37,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:37,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:37,178 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:37,178 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:37,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:37,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:37,179 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:30:37,179 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,179 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:37,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:37,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2022-11-20 10:30:37,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:37,180 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:37,196 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,207 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,211 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,214 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,226 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,347 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:37,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:30:37,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 10:30:37,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:37,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:37,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:37,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:37,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:37,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 10:30:37,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:37,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:37,454 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:37,454 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:37,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:37,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 10:30:37,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:37,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:37,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:37,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:37,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:37,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 10:30:37,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:37,511 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:37,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-11-20 10:30:37,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 10:30:37,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:30:37,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:37,637 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:30:37,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-20 10:30:37,649 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:37,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:37,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:37,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:37,649 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:30:37,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:37,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:37,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2022-11-20 10:30:37,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:37,650 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:37,651 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,666 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,671 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,686 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:37,758 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:37,762 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:30:37,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,778 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 [2022-11-20 10:30:37,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:37,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:37,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:37,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:37,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:37,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 10:30:37,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:37,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:37,837 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:37,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:37,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,913 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 [2022-11-20 10:30:37,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 10:30:37,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:37,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:37,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:37,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:37,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:37,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:37,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:37,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:37,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:37,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,947 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:37,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 10:30:37,950 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 [2022-11-20 10:30:37,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:37,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:37,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:37,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:37,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:37,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:37,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:37,983 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:37,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:37,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:37,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:37,992 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:38,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 10:30:38,000 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 [2022-11-20 10:30:38,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:38,011 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:38,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:38,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:38,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:38,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:38,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:38,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:30:38,028 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:30:38,028 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:30:38,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:38,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:38,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:38,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 10:30:38,067 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:30:38,067 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:30:38,067 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:30:38,067 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2022-11-20 10:30:38,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:38,076 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:30:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:30:38,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:30:38,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:38,276 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 10:30:38,278 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:30:38,424 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 47 states and 59 transitions. Complement of second has 12 states. [2022-11-20 10:30:38,426 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 [2022-11-20 10:30:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:30:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-20 10:30:38,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-20 10:30:38,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:38,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-20 10:30:38,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:38,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-20 10:30:38,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:38,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2022-11-20 10:30:38,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 10:30:38,464 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 25 states and 34 transitions. [2022-11-20 10:30:38,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-20 10:30:38,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 10:30:38,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-20 10:30:38,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:38,467 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-20 10:30:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-20 10:30:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-20 10:30:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-11-20 10:30:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-20 10:30:38,499 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-20 10:30:38,499 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-20 10:30:38,499 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 10:30:38,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-20 10:30:38,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 10:30:38,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:30:38,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:30:38,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:38,501 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:38,502 INFO L748 eck$LassoCheckResult]: Stem: 131#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 120#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 130#fibonacciENTRY ~n := #in~n; 127#L17 assume !(~n < 1); 128#L19 assume !(1 == ~n); 122#L22 call #t~ret4 := fibonacci(~n - 1);< 129#fibonacciENTRY ~n := #in~n; 124#L17 assume ~n < 1;#res := 0; 125#fibonacciFINAL assume true; 133#fibonacciEXIT >#29#return; 119#L22-1 [2022-11-20 10:30:38,502 INFO L750 eck$LassoCheckResult]: Loop: 119#L22-1 call #t~ret5 := fibonacci(~n - 2);< 123#fibonacciENTRY ~n := #in~n; 138#L17 assume !(~n < 1); 137#L19 assume !(1 == ~n); 121#L22 call #t~ret4 := fibonacci(~n - 1);< 123#fibonacciENTRY ~n := #in~n; 138#L17 assume ~n < 1;#res := 0; 135#fibonacciFINAL assume true; 136#fibonacciEXIT >#29#return; 119#L22-1 [2022-11-20 10:30:38,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1391758089, now seen corresponding path program 1 times [2022-11-20 10:30:38,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:38,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621889868] [2022-11-20 10:30:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:38,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:30:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:30:38,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:38,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621889868] [2022-11-20 10:30:38,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621889868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:38,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:38,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071295611] [2022-11-20 10:30:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:38,671 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:30:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash 924369961, now seen corresponding path program 1 times [2022-11-20 10:30:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:38,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025971221] [2022-11-20 10:30:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:30:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:30:38,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025971221] [2022-11-20 10:30:38,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025971221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:38,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:38,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493730136] [2022-11-20 10:30:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:38,746 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:30:38,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:38,751 INFO L87 Difference]: Start difference. First operand 20 states and 26 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) [2022-11-20 10:30:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:38,818 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-20 10:30:38,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-20 10:30:38,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 10:30:38,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-20 10:30:38,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-20 10:30:38,822 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-20 10:30:38,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-20 10:30:38,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:38,822 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-20 10:30:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-20 10:30:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 10:30:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 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) [2022-11-20 10:30:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-20 10:30:38,826 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-20 10:30:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:38,828 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-20 10:30:38,828 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 10:30:38,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-20 10:30:38,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 10:30:38,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:30:38,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:30:38,830 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:38,830 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:38,830 INFO L748 eck$LassoCheckResult]: Stem: 203#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 204#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 193#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 207#fibonacciENTRY ~n := #in~n; 200#L17 assume !(~n < 1); 202#L19 assume !(1 == ~n); 194#L22 call #t~ret4 := fibonacci(~n - 1);< 198#fibonacciENTRY ~n := #in~n; 199#L17 assume !(~n < 1); 201#L19 assume 1 == ~n;#res := 1; 209#fibonacciFINAL assume true; 212#fibonacciEXIT >#29#return; 192#L22-1 [2022-11-20 10:30:38,831 INFO L750 eck$LassoCheckResult]: Loop: 192#L22-1 call #t~ret5 := fibonacci(~n - 2);< 196#fibonacciENTRY ~n := #in~n; 197#L17 assume !(~n < 1); 215#L19 assume !(1 == ~n); 195#L22 call #t~ret4 := fibonacci(~n - 1);< 196#fibonacciENTRY ~n := #in~n; 197#L17 assume !(~n < 1); 215#L19 assume 1 == ~n;#res := 1; 214#fibonacciFINAL assume true; 211#fibonacciEXIT >#29#return; 192#L22-1 [2022-11-20 10:30:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash 194852287, now seen corresponding path program 1 times [2022-11-20 10:30:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:38,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585442933] [2022-11-20 10:30:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:38,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:30:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585442933] [2022-11-20 10:30:38,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585442933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682161709] [2022-11-20 10:30:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:38,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:38,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:38,940 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:38,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:30:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:30:38,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:39,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:39,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682161709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:39,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:30:39,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-20 10:30:39,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528535513] [2022-11-20 10:30:39,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:39,126 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:30:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1409277793, now seen corresponding path program 1 times [2022-11-20 10:30:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:39,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130683769] [2022-11-20 10:30:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:39,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:39,133 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:39,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:39,267 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:39,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:39,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:39,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:39,268 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:30:39,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:39,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:39,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:39,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2022-11-20 10:30:39,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:39,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:39,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:39,272 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:39,275 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:39,279 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:39,329 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:39,329 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:30:39,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:39,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,333 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:39,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:39,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 10:30:39,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:39,365 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:39,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:39,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:39,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,375 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 10:30:39,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:39,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:39,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:39,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:39,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:39,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:39,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,414 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 10:30:39,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:39,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:39,433 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:39,434 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=1} Honda state: {fibonacci_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:39,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:39,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:39,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,438 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 10:30:39,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:39,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:39,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:39,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:39,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,481 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:30:39,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:39,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 10:30:39,943 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:30:39,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:39,947 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:39,947 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:39,947 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:39,947 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:39,947 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:30:39,947 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:39,947 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:39,947 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:39,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2022-11-20 10:30:39,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:39,947 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:39,949 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:39,952 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:39,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:39,963 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:40,023 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:40,023 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:30:40,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:40,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:40,029 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:40,033 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 [2022-11-20 10:30:40,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:40,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:40,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:40,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:40,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:40,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:40,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:40,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 10:30:40,056 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:40,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:40,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:40,066 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:40,082 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 [2022-11-20 10:30:40,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:40,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:40,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:40,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:40,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:40,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:40,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:40,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 10:30:40,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:40,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:40,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:40,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:40,115 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:40,129 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 [2022-11-20 10:30:40,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:40,142 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:40,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:40,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:40,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:40,143 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:40,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:40,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 10:30:40,158 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:40,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:40,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:40,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:40,165 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:40,178 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 [2022-11-20 10:30:40,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:40,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:40,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:40,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:40,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:40,192 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:40,192 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:40,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 10:30:40,202 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:30:40,207 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:30:40,207 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:30:40,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:40,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:40,211 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:40,217 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:30:40,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:30:40,217 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:30:40,218 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2022-11-20 10:30:40,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:40,226 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:30:40,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 10:30:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:40,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:30:40,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:40,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:30:40,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:40,534 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 10:30:40,534 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:30:40,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:40,800 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-11-20 10:30:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 10:30:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:30:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-20 10:30:40,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-20 10:30:40,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:40,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-20 10:30:40,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:40,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-20 10:30:40,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:40,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-20 10:30:40,812 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-20 10:30:40,815 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-20 10:30:40,816 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-20 10:30:40,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-20 10:30:40,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-20 10:30:40,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:40,817 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-20 10:30:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-20 10:30:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-20 10:30:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-11-20 10:30:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-20 10:30:40,830 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-20 10:30:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:30:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:30:40,831 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:30:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:40,993 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-20 10:30:40,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-20 10:30:40,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-20 10:30:41,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-20 10:30:41,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-20 10:30:41,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-20 10:30:41,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-20 10:30:41,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:41,003 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-20 10:30:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-20 10:30:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-20 10:30:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-20 10:30:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-20 10:30:41,016 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-20 10:30:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:30:41,017 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-20 10:30:41,017 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 10:30:41,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-20 10:30:41,020 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-20 10:30:41,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:30:41,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:30:41,021 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:41,021 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:41,022 INFO L748 eck$LassoCheckResult]: Stem: 805#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 806#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 786#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 812#fibonacciENTRY ~n := #in~n; 799#L17 assume !(~n < 1); 800#L19 assume !(1 == ~n); 793#L22 call #t~ret4 := fibonacci(~n - 1);< 792#fibonacciENTRY ~n := #in~n; 794#L17 assume !(~n < 1); 850#L19 assume !(1 == ~n); 803#L22 call #t~ret4 := fibonacci(~n - 1);< 804#fibonacciENTRY ~n := #in~n; 848#L17 assume !(~n < 1); 846#L19 assume !(1 == ~n); 842#L22 call #t~ret4 := fibonacci(~n - 1);< 804#fibonacciENTRY ~n := #in~n; 848#L17 assume !(~n < 1); 846#L19 assume !(1 == ~n); 842#L22 call #t~ret4 := fibonacci(~n - 1);< 804#fibonacciENTRY ~n := #in~n; 849#L17 assume !(~n < 1); 847#L19 assume 1 == ~n;#res := 1; 845#fibonacciFINAL assume true; 844#fibonacciEXIT >#29#return; 789#L22-1 call #t~ret5 := fibonacci(~n - 2);< 843#fibonacciENTRY ~n := #in~n; 852#L17 assume ~n < 1;#res := 0; 887#fibonacciFINAL assume true; 886#fibonacciEXIT >#31#return; 884#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 883#fibonacciFINAL assume true; 877#fibonacciEXIT >#29#return; 818#L22-1 [2022-11-20 10:30:41,022 INFO L750 eck$LassoCheckResult]: Loop: 818#L22-1 call #t~ret5 := fibonacci(~n - 2);< 802#fibonacciENTRY ~n := #in~n; 881#L17 assume !(~n < 1); 816#L19 assume !(1 == ~n); 819#L22 call #t~ret4 := fibonacci(~n - 1);< 802#fibonacciENTRY ~n := #in~n; 881#L17 assume !(~n < 1); 816#L19 assume 1 == ~n;#res := 1; 820#fibonacciFINAL assume true; 873#fibonacciEXIT >#29#return; 818#L22-1 [2022-11-20 10:30:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1460678817, now seen corresponding path program 1 times [2022-11-20 10:30:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:41,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975949686] [2022-11-20 10:30:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:30:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:30:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:41,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:41,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975949686] [2022-11-20 10:30:41,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975949686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:41,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81403136] [2022-11-20 10:30:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:41,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:41,271 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:41,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 10:30:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:30:41,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:41,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:30:41,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81403136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:41,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:30:41,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-11-20 10:30:41,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608164244] [2022-11-20 10:30:41,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:41,704 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:30:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1409277793, now seen corresponding path program 2 times [2022-11-20 10:30:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:41,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131866996] [2022-11-20 10:30:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:41,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:41,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:41,840 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:41,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:41,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:41,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:41,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:30:41,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:41,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:41,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:41,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration4_Loop [2022-11-20 10:30:41,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:41,841 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:41,842 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:41,850 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:41,852 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:41,855 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:41,896 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:41,896 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:30:41,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:41,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:41,897 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:41,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:41,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:41,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 10:30:41,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:41,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:41,946 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:41,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:30:41,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:41,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 10:30:42,468 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:30:42,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-20 10:30:42,471 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:42,471 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:42,472 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:42,472 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:42,472 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:30:42,472 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:42,472 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:42,472 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:42,472 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration4_Loop [2022-11-20 10:30:42,472 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:42,472 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:42,473 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:42,477 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:42,480 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:42,488 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:42,532 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:42,533 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:30:42,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:42,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:42,535 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:42,542 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 [2022-11-20 10:30:42,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:42,555 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:42,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:42,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:42,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:42,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:42,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:42,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 10:30:42,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:42,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:42,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:42,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:42,582 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:42,585 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 [2022-11-20 10:30:42,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:42,598 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:42,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:42,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:42,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:42,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:42,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:42,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 10:30:42,624 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:42,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:42,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:42,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:42,634 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:42,641 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 [2022-11-20 10:30:42,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:42,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:42,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:42,654 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:42,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:42,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:42,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:42,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 10:30:42,676 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:30:42,680 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:30:42,681 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:30:42,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:42,686 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:42,691 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:30:42,691 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:30:42,692 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:30:42,692 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2022-11-20 10:30:42,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 10:30:42,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:42,701 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:30:42,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:30:42,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:42,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:30:43,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:43,120 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 10:30:43,120 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:30:43,352 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-11-20 10:30:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 10:30:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:30:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-20 10:30:43,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-20 10:30:43,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:43,354 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:30:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:30:43,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:30:43,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:43,742 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 10:30:43,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:30:43,902 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-11-20 10:30:43,903 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 [2022-11-20 10:30:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:30:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-20 10:30:43,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-20 10:30:43,905 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:43,905 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:30:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:30:43,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:30:44,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:44,274 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 10:30:44,274 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:30:44,552 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-11-20 10:30:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 10:30:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:30:44,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-20 10:30:44,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-20 10:30:44,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:44,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-20 10:30:44,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:44,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-20 10:30:44,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:44,558 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-20 10:30:44,575 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-20 10:30:44,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-20 10:30:44,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-20 10:30:44,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-20 10:30:44,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-20 10:30:44,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:44,596 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-20 10:30:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-20 10:30:44,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-20 10:30:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-11-20 10:30:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-20 10:30:44,665 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-20 10:30:44,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:30:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:30:44,666 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 10:30:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:45,145 INFO L93 Difference]: Finished difference Result 683 states and 994 transitions. [2022-11-20 10:30:45,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 683 states and 994 transitions. [2022-11-20 10:30:45,156 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-20 10:30:45,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 683 states to 652 states and 949 transitions. [2022-11-20 10:30:45,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 282 [2022-11-20 10:30:45,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 285 [2022-11-20 10:30:45,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 652 states and 949 transitions. [2022-11-20 10:30:45,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:45,168 INFO L218 hiAutomatonCegarLoop]: Abstraction has 652 states and 949 transitions. [2022-11-20 10:30:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states and 949 transitions. [2022-11-20 10:30:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 622. [2022-11-20 10:30:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 380 states have (on average 1.1631578947368422) internal successors, (442), 400 states have internal predecessors, (442), 151 states have call successors, (165), 76 states have call predecessors, (165), 91 states have return successors, (305), 145 states have call predecessors, (305), 141 states have call successors, (305) [2022-11-20 10:30:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 912 transitions. [2022-11-20 10:30:45,207 INFO L240 hiAutomatonCegarLoop]: Abstraction has 622 states and 912 transitions. [2022-11-20 10:30:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:30:45,208 INFO L428 stractBuchiCegarLoop]: Abstraction has 622 states and 912 transitions. [2022-11-20 10:30:45,209 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 10:30:45,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 622 states and 912 transitions. [2022-11-20 10:30:45,213 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-20 10:30:45,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:30:45,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:30:45,215 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:45,215 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 10:30:45,215 INFO L748 eck$LassoCheckResult]: Stem: 4164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 4165#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 4161#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 4160#fibonacciENTRY ~n := #in~n; 4162#L17 assume !(~n < 1); 4223#L19 assume !(1 == ~n); 4219#L22 call #t~ret4 := fibonacci(~n - 1);< 4222#fibonacciENTRY ~n := #in~n; 4221#L17 assume !(~n < 1); 4220#L19 assume !(1 == ~n); 4215#L22 call #t~ret4 := fibonacci(~n - 1);< 4218#fibonacciENTRY ~n := #in~n; 4217#L17 assume !(~n < 1); 4216#L19 assume !(1 == ~n); 4211#L22 call #t~ret4 := fibonacci(~n - 1);< 4214#fibonacciENTRY ~n := #in~n; 4213#L17 assume !(~n < 1); 4212#L19 assume !(1 == ~n); 4207#L22 call #t~ret4 := fibonacci(~n - 1);< 4210#fibonacciENTRY ~n := #in~n; 4209#L17 assume !(~n < 1); 4208#L19 assume !(1 == ~n); 4204#L22 call #t~ret4 := fibonacci(~n - 1);< 4206#fibonacciENTRY ~n := #in~n; 4205#L17 assume !(~n < 1); 4203#L19 assume !(1 == ~n); 4200#L22 call #t~ret4 := fibonacci(~n - 1);< 4198#fibonacciENTRY ~n := #in~n; 4201#L17 assume !(~n < 1); 4652#L19 assume !(1 == ~n); 4199#L22 call #t~ret4 := fibonacci(~n - 1);< 4198#fibonacciENTRY ~n := #in~n; 4202#L17 assume !(~n < 1); 4693#L19 assume 1 == ~n;#res := 1; 4692#fibonacciFINAL assume true; 4691#fibonacciEXIT >#29#return; 4361#L22-1 call #t~ret5 := fibonacci(~n - 2);< 4363#fibonacciENTRY ~n := #in~n; 4748#L17 assume !(~n < 1); 4443#L19 assume !(1 == ~n); 4445#L22 call #t~ret4 := fibonacci(~n - 1);< 4529#fibonacciENTRY ~n := #in~n; 4587#L17 assume !(~n < 1); 4533#L19 assume !(1 == ~n); 4534#L22 call #t~ret4 := fibonacci(~n - 1);< 4661#fibonacciENTRY [2022-11-20 10:30:45,216 INFO L750 eck$LassoCheckResult]: Loop: 4661#fibonacciENTRY ~n := #in~n; 4700#L17 assume !(~n < 1); 4677#L19 assume !(1 == ~n); 4657#L22 call #t~ret4 := fibonacci(~n - 1);< 4661#fibonacciENTRY [2022-11-20 10:30:45,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:45,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1413084929, now seen corresponding path program 1 times [2022-11-20 10:30:45,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:45,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457169993] [2022-11-20 10:30:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:45,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:30:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:30:45,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:45,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457169993] [2022-11-20 10:30:45,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457169993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:45,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166937620] [2022-11-20 10:30:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:45,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:45,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:45,585 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:45,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 10:30:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:45,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:30:45,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:30:45,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:30:45,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166937620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:45,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:30:45,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 21 [2022-11-20 10:30:45,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679861048] [2022-11-20 10:30:45,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:45,980 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:30:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash 927641, now seen corresponding path program 2 times [2022-11-20 10:30:45,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:45,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119363752] [2022-11-20 10:30:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:45,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:45,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:45,987 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:46,022 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:46,023 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:46,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:46,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:46,023 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:30:46,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:46,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:46,023 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2022-11-20 10:30:46,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:46,024 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:46,024 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,027 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,033 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,035 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,037 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,073 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:46,073 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:30:46,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:46,075 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:46,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:46,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:46,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 10:30:46,113 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:46,113 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:46,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:46,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:46,134 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:46,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:46,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:46,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 10:30:46,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:46,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:46,186 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:46,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 10:30:46,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:30:46,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:46,268 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:30:46,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-11-20 10:30:46,271 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:46,271 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:46,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:46,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:46,272 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:30:46,272 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,272 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:46,272 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:46,272 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2022-11-20 10:30:46,272 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:46,272 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:46,273 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,275 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,281 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,291 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,293 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:46,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:46,336 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:30:46,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:46,337 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:46,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 10:30:46,340 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 [2022-11-20 10:30:46,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:46,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:46,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:46,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:46,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:46,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:46,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:46,376 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:46,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:46,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:46,387 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:46,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 10:30:46,392 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 [2022-11-20 10:30:46,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:46,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:46,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:46,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:46,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:46,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:46,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:46,416 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:30:46,419 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:30:46,419 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:30:46,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:46,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:46,427 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:46,429 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:30:46,430 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:30:46,430 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:30:46,430 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2022-11-20 10:30:46,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 10:30:46,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:46,436 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:30:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:46,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 10:30:46,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:46,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:30:46,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:46,687 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-20 10:30:46,688 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 622 states and 912 transitions. cyclomatic complexity: 300 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:46,758 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 622 states and 912 transitions. cyclomatic complexity: 300. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 644 states and 934 transitions. Complement of second has 13 states. [2022-11-20 10:30:46,759 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 [2022-11-20 10:30:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-20 10:30:46,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-20 10:30:46,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:46,761 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:30:46,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:46,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 10:30:46,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:46,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:30:46,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:47,002 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-20 10:30:47,003 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 622 states and 912 transitions. cyclomatic complexity: 300 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:47,072 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 622 states and 912 transitions. cyclomatic complexity: 300. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 644 states and 934 transitions. Complement of second has 13 states. [2022-11-20 10:30:47,074 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 [2022-11-20 10:30:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-20 10:30:47,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-20 10:30:47,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:47,075 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:30:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 10:30:47,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:30:47,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:47,324 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-20 10:30:47,324 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 622 states and 912 transitions. cyclomatic complexity: 300 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:47,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 622 states and 912 transitions. cyclomatic complexity: 300. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 839 states and 1152 transitions. Complement of second has 14 states. [2022-11-20 10:30:47,415 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 [2022-11-20 10:30:47,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-20 10:30:47,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-20 10:30:47,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:47,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2022-11-20 10:30:47,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:47,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2022-11-20 10:30:47,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:47,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 839 states and 1152 transitions. [2022-11-20 10:30:47,434 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-20 10:30:47,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 839 states to 684 states and 985 transitions. [2022-11-20 10:30:47,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 241 [2022-11-20 10:30:47,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 250 [2022-11-20 10:30:47,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 684 states and 985 transitions. [2022-11-20 10:30:47,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:47,445 INFO L218 hiAutomatonCegarLoop]: Abstraction has 684 states and 985 transitions. [2022-11-20 10:30:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states and 985 transitions. [2022-11-20 10:30:47,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 654. [2022-11-20 10:30:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 407 states have (on average 1.1523341523341524) internal successors, (469), 432 states have internal predecessors, (469), 151 states have call successors, (165), 76 states have call predecessors, (165), 96 states have return successors, (315), 145 states have call predecessors, (315), 141 states have call successors, (315) [2022-11-20 10:30:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 949 transitions. [2022-11-20 10:30:47,480 INFO L240 hiAutomatonCegarLoop]: Abstraction has 654 states and 949 transitions. [2022-11-20 10:30:47,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:30:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:30:47,481 INFO L87 Difference]: Start difference. First operand 654 states and 949 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:47,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-20 10:30:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:47,850 INFO L93 Difference]: Finished difference Result 799 states and 1195 transitions. [2022-11-20 10:30:47,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 799 states and 1195 transitions. [2022-11-20 10:30:47,860 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-20 10:30:47,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 799 states to 778 states and 1163 transitions. [2022-11-20 10:30:47,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2022-11-20 10:30:47,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 292 [2022-11-20 10:30:47,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 778 states and 1163 transitions. [2022-11-20 10:30:47,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:47,872 INFO L218 hiAutomatonCegarLoop]: Abstraction has 778 states and 1163 transitions. [2022-11-20 10:30:47,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states and 1163 transitions. [2022-11-20 10:30:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 710. [2022-11-20 10:30:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 441 states have (on average 1.145124716553288) internal successors, (505), 470 states have internal predecessors, (505), 169 states have call successors, (185), 86 states have call predecessors, (185), 100 states have return successors, (341), 153 states have call predecessors, (341), 159 states have call successors, (341) [2022-11-20 10:30:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1031 transitions. [2022-11-20 10:30:47,898 INFO L240 hiAutomatonCegarLoop]: Abstraction has 710 states and 1031 transitions. [2022-11-20 10:30:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:30:47,901 INFO L428 stractBuchiCegarLoop]: Abstraction has 710 states and 1031 transitions. [2022-11-20 10:30:47,902 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 10:30:47,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 710 states and 1031 transitions. [2022-11-20 10:30:47,906 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-20 10:30:47,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:30:47,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:30:47,910 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 12, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:47,910 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 10:30:47,910 INFO L748 eck$LassoCheckResult]: Stem: 9185#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 9186#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 9192#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 9193#fibonacciENTRY ~n := #in~n; 9328#L17 assume !(~n < 1); 9324#L19 assume !(1 == ~n); 9296#L22 call #t~ret4 := fibonacci(~n - 1);< 9312#fibonacciENTRY ~n := #in~n; 9643#L17 assume !(~n < 1); 9642#L19 assume !(1 == ~n); 9299#L22 call #t~ret4 := fibonacci(~n - 1);< 9300#fibonacciENTRY ~n := #in~n; 9401#L17 assume !(~n < 1); 9399#L19 assume !(1 == ~n); 9332#L22 call #t~ret4 := fibonacci(~n - 1);< 9334#fibonacciENTRY ~n := #in~n; 9377#L17 assume !(~n < 1); 9365#L19 assume !(1 == ~n); 9342#L22 call #t~ret4 := fibonacci(~n - 1);< 9362#fibonacciENTRY ~n := #in~n; 9346#L17 assume !(~n < 1); 9344#L19 assume !(1 == ~n); 9339#L22 call #t~ret4 := fibonacci(~n - 1);< 9343#fibonacciENTRY ~n := #in~n; 9559#L17 assume !(~n < 1); 9408#L19 assume !(1 == ~n); 9404#L22 call #t~ret4 := fibonacci(~n - 1);< 9405#fibonacciENTRY ~n := #in~n; 9544#L17 assume !(~n < 1); 9542#L19 assume !(1 == ~n); 9358#L22 call #t~ret4 := fibonacci(~n - 1);< 9540#fibonacciENTRY ~n := #in~n; 9545#L17 assume !(~n < 1); 9543#L19 assume !(1 == ~n); 9359#L22 call #t~ret4 := fibonacci(~n - 1);< 9540#fibonacciENTRY ~n := #in~n; 9546#L17 assume !(~n < 1); 9712#L19 assume 1 == ~n;#res := 1; 9710#fibonacciFINAL assume true; 9708#fibonacciEXIT >#29#return; 9703#L22-1 call #t~ret5 := fibonacci(~n - 2);< 9705#fibonacciENTRY ~n := #in~n; 9770#L17 assume !(~n < 1); 9716#L19 assume !(1 == ~n); 9718#L22 call #t~ret4 := fibonacci(~n - 1);< 9728#fibonacciENTRY ~n := #in~n; 9853#L17 assume !(~n < 1); 9861#L19 assume !(1 == ~n); 9217#L22 call #t~ret4 := fibonacci(~n - 1);< 9232#fibonacciENTRY ~n := #in~n; 9233#L17 assume !(~n < 1); 9219#L19 assume !(1 == ~n); 9216#L22 [2022-11-20 10:30:47,910 INFO L750 eck$LassoCheckResult]: Loop: 9216#L22 call #t~ret4 := fibonacci(~n - 1);< 9232#fibonacciENTRY ~n := #in~n; 9233#L17 assume !(~n < 1); 9219#L19 assume !(1 == ~n); 9216#L22 [2022-11-20 10:30:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1648910477, now seen corresponding path program 2 times [2022-11-20 10:30:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:47,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467167496] [2022-11-20 10:30:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:47,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:30:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:30:48,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:48,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467167496] [2022-11-20 10:30:48,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467167496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:48,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174072567] [2022-11-20 10:30:48,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:30:48,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:48,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:48,310 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:48,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-20 10:30:48,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:30:48,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:30:48,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:30:48,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:30:48,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:30:48,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174072567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:48,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:30:48,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-11-20 10:30:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295358488] [2022-11-20 10:30:48,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:48,703 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:30:48,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1757801, now seen corresponding path program 3 times [2022-11-20 10:30:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:48,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675242299] [2022-11-20 10:30:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:48,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:48,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:48,773 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:48,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:48,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:48,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:48,773 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:30:48,774 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:48,774 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:48,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:48,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration6_Loop [2022-11-20 10:30:48,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:48,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:48,775 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:48,777 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:48,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:48,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:48,837 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:48,837 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:30:48,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:48,841 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:48,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 10:30:48,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:48,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:48,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:48,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=0} Honda state: {fibonacci_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:48,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-11-20 10:30:48,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:48,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:48,861 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:48,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:48,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:48,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-20 10:30:48,876 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:48,876 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:48,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:48,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:48,880 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:48,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-20 10:30:48,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:48,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:48,908 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:30:48,908 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:30:48,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-11-20 10:30:48,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:48,913 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:48,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-20 10:30:48,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:30:48,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:48,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-11-20 10:30:48,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:48,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:48,948 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:48,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-20 10:30:48,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:30:48,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:30:50,891 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:30:50,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:50,895 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:30:50,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:30:50,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:30:50,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:30:50,896 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:30:50,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:50,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:30:50,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:30:50,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration6_Loop [2022-11-20 10:30:50,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:30:50,896 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:30:50,897 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:50,899 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:50,901 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:50,909 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:30:50,962 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:30:50,962 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:30:50,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:50,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:50,963 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:50,973 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 [2022-11-20 10:30:50,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:50,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:50,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:50,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:50,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:50,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:50,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:50,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-20 10:30:50,992 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:50,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:50,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:50,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:50,996 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:50,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-20 10:30:50,998 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 [2022-11-20 10:30:51,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:51,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:51,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:51,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:51,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:51,009 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:51,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:51,011 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:30:51,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-11-20 10:30:51,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:51,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:51,017 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:51,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-20 10:30:51,020 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 [2022-11-20 10:30:51,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:30:51,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:30:51,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:30:51,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:30:51,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:30:51,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:30:51,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:30:51,034 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:30:51,037 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:30:51,037 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:30:51,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:30:51,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:51,040 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:51,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-20 10:30:51,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:30:51,042 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:30:51,042 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:30:51,042 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2022-11-20 10:30:51,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:51,052 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:30:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 10:30:51,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:51,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:30:51,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:51,331 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-20 10:30:51,332 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 710 states and 1031 transitions. cyclomatic complexity: 331 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:51,392 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 710 states and 1031 transitions. cyclomatic complexity: 331. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 734 states and 1056 transitions. Complement of second has 18 states. [2022-11-20 10:30:51,392 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 [2022-11-20 10:30:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2022-11-20 10:30:51,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 52 letters. Loop has 4 letters. [2022-11-20 10:30:51,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:51,396 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:30:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 10:30:51,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:30:51,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:51,657 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-20 10:30:51,657 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 710 states and 1031 transitions. cyclomatic complexity: 331 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:51,761 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 710 states and 1031 transitions. cyclomatic complexity: 331. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 964 states and 1378 transitions. Complement of second has 22 states. [2022-11-20 10:30:51,761 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 [2022-11-20 10:30:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-11-20 10:30:51,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 52 letters. Loop has 4 letters. [2022-11-20 10:30:51,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:51,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-20 10:30:51,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:51,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 52 letters. Loop has 8 letters. [2022-11-20 10:30:51,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:30:51,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 964 states and 1378 transitions. [2022-11-20 10:30:51,775 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-20 10:30:51,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 964 states to 888 states and 1297 transitions. [2022-11-20 10:30:51,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 290 [2022-11-20 10:30:51,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 318 [2022-11-20 10:30:51,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 888 states and 1297 transitions. [2022-11-20 10:30:51,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:30:51,794 INFO L218 hiAutomatonCegarLoop]: Abstraction has 888 states and 1297 transitions. [2022-11-20 10:30:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states and 1297 transitions. [2022-11-20 10:30:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 875. [2022-11-20 10:30:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 551 states have (on average 1.1306715063520871) internal successors, (623), 588 states have internal predecessors, (623), 202 states have call successors, (236), 113 states have call predecessors, (236), 122 states have return successors, (421), 173 states have call predecessors, (421), 192 states have call successors, (421) [2022-11-20 10:30:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1280 transitions. [2022-11-20 10:30:51,826 INFO L240 hiAutomatonCegarLoop]: Abstraction has 875 states and 1280 transitions. [2022-11-20 10:30:51,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:51,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:30:51,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:30:51,827 INFO L87 Difference]: Start difference. First operand 875 states and 1280 transitions. Second operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 12 states have internal predecessors, (35), 10 states have call successors, (11), 11 states have call predecessors, (11), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:30:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:52,186 INFO L93 Difference]: Finished difference Result 475 states and 560 transitions. [2022-11-20 10:30:52,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 475 states and 560 transitions. [2022-11-20 10:30:52,190 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:30:52,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 475 states to 0 states and 0 transitions. [2022-11-20 10:30:52,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 10:30:52,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 10:30:52,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 10:30:52,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:52,190 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:30:52,190 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:30:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:30:52,192 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:30:52,192 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 10:30:52,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:30:52,192 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:30:52,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 10:30:52,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:30:52 BoogieIcfgContainer [2022-11-20 10:30:52,200 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 10:30:52,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:30:52,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:30:52,201 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:30:52,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:36" (3/4) ... [2022-11-20 10:30:52,205 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:30:52,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:30:52,205 INFO L158 Benchmark]: Toolchain (without parser) took 16147.47ms. Allocated memory was 155.2MB in the beginning and 232.8MB in the end (delta: 77.6MB). Free memory was 113.9MB in the beginning and 101.2MB in the end (delta: 12.7MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. [2022-11-20 10:30:52,206 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:30:52,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.07ms. Allocated memory is still 155.2MB. Free memory was 113.3MB in the beginning and 123.8MB in the end (delta: -10.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 10:30:52,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.18ms. Allocated memory is still 155.2MB. Free memory was 123.8MB in the beginning and 121.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:30:52,207 INFO L158 Benchmark]: Boogie Preprocessor took 28.61ms. Allocated memory is still 155.2MB. Free memory was 121.9MB in the beginning and 121.2MB in the end (delta: 722.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:30:52,207 INFO L158 Benchmark]: RCFGBuilder took 239.55ms. Allocated memory is still 155.2MB. Free memory was 121.2MB in the beginning and 111.9MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:30:52,207 INFO L158 Benchmark]: BuchiAutomizer took 15559.06ms. Allocated memory was 155.2MB in the beginning and 232.8MB in the end (delta: 77.6MB). Free memory was 111.9MB in the beginning and 101.2MB in the end (delta: 10.7MB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. [2022-11-20 10:30:52,208 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 232.8MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:30:52,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.07ms. Allocated memory is still 155.2MB. Free memory was 113.3MB in the beginning and 123.8MB in the end (delta: -10.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.18ms. Allocated memory is still 155.2MB. Free memory was 123.8MB in the beginning and 121.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.61ms. Allocated memory is still 155.2MB. Free memory was 121.9MB in the beginning and 121.2MB in the end (delta: 722.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 239.55ms. Allocated memory is still 155.2MB. Free memory was 121.2MB in the beginning and 111.9MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 15559.06ms. Allocated memory was 155.2MB in the beginning and 232.8MB in the end (delta: 77.6MB). Free memory was 111.9MB in the beginning and 101.2MB in the end (delta: 10.7MB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 232.8MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 23 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.5s and 7 iterations. TraceHistogramMax:12. Analysis of lassos took 9.0s. Construction of modules took 1.2s. Büchi inclusion checks took 4.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 250 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 632 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 607 mSDsluCounter, 604 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 391 mSDsCounter, 417 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1452 IncrementalHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 417 mSolverCounterUnsat, 213 mSDtfsCounter, 1452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp81 dnf100 smp100 tf110 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 69ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 10:30:52,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:52,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-20 10:30:52,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-20 10:30:52,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 10:30:53,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c7acc5-4e75-411b-b25e-e1132b4f667e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE