./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 14cfbc3a2ba2bfe3a03d4d1ebff24b0baf1851f06dbbd2468b59e09322e4ce16 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:53:41,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:53:41,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:53:41,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:53:41,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:53:41,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:53:41,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:53:41,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:53:41,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:53:41,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:53:41,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:53:41,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:53:41,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:53:41,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:53:41,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:53:41,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:53:41,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:53:41,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:53:41,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:53:41,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:53:41,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:53:41,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:53:41,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:53:41,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:53:41,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:53:41,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:53:41,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:53:41,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:53:41,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:53:41,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:53:41,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:53:41,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:53:41,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:53:41,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:53:41,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:53:41,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:53:41,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:53:41,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:53:41,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:53:41,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:53:41,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:53:41,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 22:53:41,607 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:53:41,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:53:41,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:53:41,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:53:41,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:53:41,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:53:41,609 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:53:41,609 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:53:41,610 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:53:41,610 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:53:41,610 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:53:41,610 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:53:41,610 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:53:41,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:53:41,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:53:41,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:53:41,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:53:41,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:53:41,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:53:41,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:53:41,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:53:41,612 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:53:41,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:53:41,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:53:41,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:53:41,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:53:41,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:53:41,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:53:41,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:53:41,618 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:53:41,618 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_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14cfbc3a2ba2bfe3a03d4d1ebff24b0baf1851f06dbbd2468b59e09322e4ce16 [2021-10-28 22:53:41,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:53:41,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:53:41,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:53:41,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:53:41,939 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:53:41,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c [2021-10-28 22:53:42,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/data/f41ce9af9/fb9096549e914cdcab5f2ba5517decfa/FLAG33f3cf68c [2021-10-28 22:53:42,514 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:53:42,515 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/sv-benchmarks/c/termination-numeric/Fibonacci01-2.c [2021-10-28 22:53:42,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/data/f41ce9af9/fb9096549e914cdcab5f2ba5517decfa/FLAG33f3cf68c [2021-10-28 22:53:42,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/data/f41ce9af9/fb9096549e914cdcab5f2ba5517decfa [2021-10-28 22:53:42,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:53:42,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:53:42,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:42,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:53:42,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:53:42,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:42" (1/1) ... [2021-10-28 22:53:42,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214fbe50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:42, skipping insertion in model container [2021-10-28 22:53:42,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:42" (1/1) ... [2021-10-28 22:53:42,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:53:42,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:53:43,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/sv-benchmarks/c/termination-numeric/Fibonacci01-2.c[761,774] [2021-10-28 22:53:43,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:43,104 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:53:43,125 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/sv-benchmarks/c/termination-numeric/Fibonacci01-2.c[761,774] [2021-10-28 22:53:43,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:43,140 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:53:43,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43 WrapperNode [2021-10-28 22:53:43,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:43,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:53:43,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:53:43,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:53:43,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:53:43,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:53:43,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:53:43,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:53:43,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:53:43,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:53:43,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:53:43,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:53:43,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (1/1) ... [2021-10-28 22:53:43,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:43,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:43,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:43,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:53:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-10-28 22:53:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-10-28 22:53:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:53:43,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:53:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:53:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:53:43,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:53:43,579 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 22:53:43,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:43 BoogieIcfgContainer [2021-10-28 22:53:43,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:53:43,582 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:53:43,582 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:53:43,586 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:53:43,586 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:43,587 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:53:42" (1/3) ... [2021-10-28 22:53:43,589 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@279b1dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:53:43, skipping insertion in model container [2021-10-28 22:53:43,589 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:43,590 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:43" (2/3) ... [2021-10-28 22:53:43,590 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@279b1dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:53:43, skipping insertion in model container [2021-10-28 22:53:43,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:43,590 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:43" (3/3) ... [2021-10-28 22:53:43,592 INFO L389 chiAutomizerObserver]: Analyzing ICFG Fibonacci01-2.c [2021-10-28 22:53:43,675 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:53:43,676 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:53:43,676 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:53:43,676 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:53:43,676 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:53:43,676 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:53:43,676 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:53:43,676 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:53:43,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:53:43,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:43,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:43,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:43,730 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 22:53:43,730 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 22:53:43,730 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:53:43,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:53:43,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:43,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:43,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:43,734 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 22:53:43,735 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 22:53:43,742 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 10#L29true assume !(main_~x~0 < 1); 12#L31true call main_#t~ret10 := fibonacci(main_~x~0);< 5#fibonacciENTRYtrue [2021-10-28 22:53:43,742 INFO L793 eck$LassoCheckResult]: Loop: 5#fibonacciENTRYtrue ~n := #in~n; 6#L17true assume !(~n < 1); 18#L19true assume !(1 == ~n); 16#L22true call #t~ret7 := fibonacci(~n - 1);< 5#fibonacciENTRYtrue [2021-10-28 22:53:43,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1325876, now seen corresponding path program 1 times [2021-10-28 22:53:43,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:43,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435560713] [2021-10-28 22:53:43,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:43,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:43,859 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:43,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:43,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash 927646, now seen corresponding path program 1 times [2021-10-28 22:53:43,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:43,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712093344] [2021-10-28 22:53:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:43,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:43,913 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:43,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:43,929 INFO L85 PathProgramCache]: Analyzing trace with hash 408654161, now seen corresponding path program 1 times [2021-10-28 22:53:43,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:43,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943313199] [2021-10-28 22:53:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:43,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:43,952 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:43,974 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:44,097 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:44,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:44,097 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:44,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:44,098 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:53:44,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:44,098 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:44,098 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration1_Loop [2021-10-28 22:53:44,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:44,099 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:44,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,193 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:44,195 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:53:44,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:44,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:44,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 22:53:44,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:44,264 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:44,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:44,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:44,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 22:53:44,343 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:44,343 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret7=0} Honda state: {fibonacci_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:44,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:44,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:44,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 22:53:44,426 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:44,427 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:44,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-28 22:53:44,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 22:53:44,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:44,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:44,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:44,470 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:44,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:44,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:44,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 22:53:44,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:53:44,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:44,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 22:53:44,677 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:53:44,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,682 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:44,683 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:44,683 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:44,683 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:44,683 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:53:44,683 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,683 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:44,683 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:44,683 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration1_Loop [2021-10-28 22:53:44,683 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:44,683 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:44,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:44,771 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:53:44,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:44,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:44,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:44,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:44,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:44,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:44,794 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:44,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:44,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 22:53:44,808 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:44,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,831 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 22:53:44,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:44,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:44,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:44,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:44,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:44,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:44,842 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:44,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:44,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:44,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 22:53:44,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 22:53:44,891 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:44,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:44,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:44,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:44,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:44,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:44,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:44,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:44,930 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:44,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,968 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:44,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 22:53:44,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:44,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:44,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:44,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:44,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:44,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:44,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:44,995 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:45,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:45,019 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:45,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:45,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 22:53:45,022 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:45,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:45,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:45,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:45,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:45,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:45,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:45,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:45,040 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:53:45,044 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:53:45,044 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 22:53:45,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:45,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:45,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 22:53:45,076 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:53:45,076 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:53:45,076 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:53:45,077 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2021-10-28 22:53:45,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:45,098 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:53:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:53:45,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:53:45,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:45,302 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 22:53:45,304 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:45,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 51 states and 63 transitions. Complement of second has 12 states. [2021-10-28 22:53:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 22:53:45,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-28 22:53:45,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:45,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 22:53:45,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:45,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-28 22:53:45,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:45,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2021-10-28 22:53:45,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:45,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 26 states and 35 transitions. [2021-10-28 22:53:45,456 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-28 22:53:45,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-28 22:53:45,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 35 transitions. [2021-10-28 22:53:45,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:45,456 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-10-28 22:53:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 35 transitions. [2021-10-28 22:53:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-28 22:53:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 22:53:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-10-28 22:53:45,480 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-10-28 22:53:45,480 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-10-28 22:53:45,480 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:53:45,480 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2021-10-28 22:53:45,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:45,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:45,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:45,482 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:45,482 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:45,482 INFO L791 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 141#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 143#L29 assume !(main_~x~0 < 1); 131#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 133#fibonacciENTRY ~n := #in~n; 134#L17 assume !(~n < 1); 139#L19 assume !(1 == ~n); 129#L22 call #t~ret7 := fibonacci(~n - 1);< 135#fibonacciENTRY ~n := #in~n; 136#L17 assume ~n < 1;#res := 0; 137#fibonacciFINAL assume true; 142#fibonacciEXIT >#34#return; 128#L22-1 [2021-10-28 22:53:45,482 INFO L793 eck$LassoCheckResult]: Loop: 128#L22-1 call #t~ret8 := fibonacci(~n - 2);< 132#fibonacciENTRY ~n := #in~n; 148#L17 assume !(~n < 1); 147#L19 assume !(1 == ~n); 130#L22 call #t~ret7 := fibonacci(~n - 1);< 132#fibonacciENTRY ~n := #in~n; 148#L17 assume ~n < 1;#res := 0; 145#fibonacciFINAL assume true; 146#fibonacciEXIT >#34#return; 128#L22-1 [2021-10-28 22:53:45,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1923124650, now seen corresponding path program 1 times [2021-10-28 22:53:45,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:45,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381881414] [2021-10-28 22:53:45,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:45,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 22:53:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:53:45,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:45,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381881414] [2021-10-28 22:53:45,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381881414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:45,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:45,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:53:45,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80730609] [2021-10-28 22:53:45,575 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:53:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash 481649848, now seen corresponding path program 1 times [2021-10-28 22:53:45,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:45,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100802871] [2021-10-28 22:53:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:45,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 22:53:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:53:45,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:45,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100802871] [2021-10-28 22:53:45,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100802871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:45,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:45,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:53:45,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30299307] [2021-10-28 22:53:45,635 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:53:45,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:53:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:53:45,645 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:53:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:45,722 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-10-28 22:53:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:53:45,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2021-10-28 22:53:45,730 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:45,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2021-10-28 22:53:45,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-28 22:53:45,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-28 22:53:45,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2021-10-28 22:53:45,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:45,737 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-28 22:53:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2021-10-28 22:53:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 22:53:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 22:53:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-10-28 22:53:45,741 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-28 22:53:45,741 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-28 22:53:45,741 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:53:45,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2021-10-28 22:53:45,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:45,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:45,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:45,744 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:45,744 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 22:53:45,744 INFO L791 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 216#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 219#L29 assume !(main_~x~0 < 1); 204#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 221#fibonacciENTRY ~n := #in~n; 210#L17 assume !(~n < 1); 214#L19 assume !(1 == ~n); 205#L22 call #t~ret7 := fibonacci(~n - 1);< 209#fibonacciENTRY ~n := #in~n; 211#L17 assume !(~n < 1); 227#L19 assume 1 == ~n;#res := 1; 226#fibonacciFINAL assume true; 225#fibonacciEXIT >#34#return; 203#L22-1 [2021-10-28 22:53:45,744 INFO L793 eck$LassoCheckResult]: Loop: 203#L22-1 call #t~ret8 := fibonacci(~n - 2);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume !(1 == ~n); 206#L22 call #t~ret7 := fibonacci(~n - 1);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume !(1 == ~n); 206#L22 call #t~ret7 := fibonacci(~n - 1);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume 1 == ~n;#res := 1; 222#fibonacciFINAL assume true; 223#fibonacciEXIT >#34#return; 203#L22-1 call #t~ret8 := fibonacci(~n - 2);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume ~n < 1;#res := 0; 212#fibonacciFINAL assume true; 217#fibonacciEXIT >#36#return; 218#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 220#fibonacciFINAL assume true; 224#fibonacciEXIT >#34#return; 203#L22-1 [2021-10-28 22:53:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash -512653656, now seen corresponding path program 1 times [2021-10-28 22:53:45,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:45,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064566897] [2021-10-28 22:53:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:45,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:45,760 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:45,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:45,837 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 319636608, now seen corresponding path program 1 times [2021-10-28 22:53:45,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:45,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264859092] [2021-10-28 22:53:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:45,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:45,855 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:45,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:45,867 INFO L85 PathProgramCache]: Analyzing trace with hash 911295463, now seen corresponding path program 1 times [2021-10-28 22:53:45,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:45,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035072015] [2021-10-28 22:53:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:45,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 22:53:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-28 22:53:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:46,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 22:53:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 22:53:46,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:46,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035072015] [2021-10-28 22:53:46,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035072015] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:46,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838973300] [2021-10-28 22:53:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:46,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:53:46,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:46,044 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:53:46,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 22:53:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:46,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:53:46,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-28 22:53:46,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838973300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:46,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:53:46,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-28 22:53:46,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498784353] [2021-10-28 22:53:46,656 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:46,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:46,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:46,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:46,657 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:53:46,657 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:46,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:46,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:46,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration3_Loop [2021-10-28 22:53:46,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:46,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:46,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:46,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:46,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:46,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:46,744 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:46,745 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:53:46,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:46,746 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:46,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:46,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:46,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 22:53:46,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:46,764 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:46,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:46,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:46,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:46,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 22:53:46,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:46,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:46,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:46,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:46,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:46,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:46,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:46,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:46,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 22:53:46,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:46,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:46,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:46,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:46,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:46,881 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:46,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 22:53:46,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:53:46,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:47,690 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:53:47,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:47,693 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:47,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:47,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:47,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:47,693 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:53:47,693 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:47,693 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:47,693 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:47,693 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration3_Loop [2021-10-28 22:53:47,693 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:47,693 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:47,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:47,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:47,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:47,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:47,796 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:47,796 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:53:47,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:47,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:47,800 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:47,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:47,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:47,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:47,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:47,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:47,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:47,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:47,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:47,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 22:53:47,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:47,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:47,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:47,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:47,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:47,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:47,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 22:53:47,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:47,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:47,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:47,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:47,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:47,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:47,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:47,907 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:47,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:47,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:47,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:47,928 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:47,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 22:53:47,931 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:47,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:47,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:47,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:47,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:47,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:47,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:47,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:47,940 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:47,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:47,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:47,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:47,964 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:47,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 22:53:47,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:47,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:47,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:47,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:47,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:47,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:47,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:47,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:47,984 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:53:47,987 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:53:47,987 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 22:53:47,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:47,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:47,991 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:47,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 22:53:47,992 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:53:47,992 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:53:47,992 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:53:47,992 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-28 22:53:48,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:48,012 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:53:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:48,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:53:48,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:48,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:53:48,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 22:53:48,437 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-28 22:53:48,437 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 22:53:48,690 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 160 states and 216 transitions. Complement of second has 48 states. [2021-10-28 22:53:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 22:53:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 42 transitions. [2021-10-28 22:53:48,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 22 letters. [2021-10-28 22:53:48,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:48,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 35 letters. Loop has 22 letters. [2021-10-28 22:53:48,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:48,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 44 letters. [2021-10-28 22:53:48,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:48,701 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 216 transitions. [2021-10-28 22:53:48,708 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-10-28 22:53:48,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 129 states and 181 transitions. [2021-10-28 22:53:48,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2021-10-28 22:53:48,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-10-28 22:53:48,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 181 transitions. [2021-10-28 22:53:48,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:48,716 INFO L681 BuchiCegarLoop]: Abstraction has 129 states and 181 transitions. [2021-10-28 22:53:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 181 transitions. [2021-10-28 22:53:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2021-10-28 22:53:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2021-10-28 22:53:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2021-10-28 22:53:48,734 INFO L704 BuchiCegarLoop]: Abstraction has 107 states and 141 transitions. [2021-10-28 22:53:48,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:53:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:53:48,736 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 22:53:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:48,824 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2021-10-28 22:53:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:53:48,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 58 transitions. [2021-10-28 22:53:48,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:48,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 54 transitions. [2021-10-28 22:53:48,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-10-28 22:53:48,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-10-28 22:53:48,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2021-10-28 22:53:48,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:48,864 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-28 22:53:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2021-10-28 22:53:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-10-28 22:53:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2021-10-28 22:53:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-28 22:53:48,870 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-28 22:53:48,870 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-28 22:53:48,871 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:53:48,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:48,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2021-10-28 22:53:48,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:48,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:48,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:48,893 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:48,893 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 22:53:48,894 INFO L791 eck$LassoCheckResult]: Stem: 888#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 889#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 892#L29 assume !(main_~x~0 < 1); 878#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 880#fibonacciENTRY ~n := #in~n; 881#L17 assume !(~n < 1); 887#L19 assume !(1 == ~n); 877#L22 call #t~ret7 := fibonacci(~n - 1);< 879#fibonacciENTRY ~n := #in~n; 883#L17 assume !(~n < 1); 910#L19 assume !(1 == ~n); 882#L22 call #t~ret7 := fibonacci(~n - 1);< 879#fibonacciENTRY ~n := #in~n; 884#L17 assume !(~n < 1); 894#L19 assume 1 == ~n;#res := 1; 895#fibonacciFINAL assume true; 909#fibonacciEXIT >#34#return; 904#L22-1 call #t~ret8 := fibonacci(~n - 2);< 905#fibonacciENTRY ~n := #in~n; 908#L17 assume ~n < 1;#res := 0; 906#fibonacciFINAL assume true; 903#fibonacciEXIT >#36#return; 902#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 901#fibonacciFINAL assume true; 900#fibonacciEXIT >#34#return; 874#L22-1 [2021-10-28 22:53:48,894 INFO L793 eck$LassoCheckResult]: Loop: 874#L22-1 call #t~ret8 := fibonacci(~n - 2);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume !(1 == ~n); 873#L22 call #t~ret7 := fibonacci(~n - 1);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume !(1 == ~n); 873#L22 call #t~ret7 := fibonacci(~n - 1);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume 1 == ~n;#res := 1; 898#fibonacciFINAL assume true; 907#fibonacciEXIT >#34#return; 872#L22-1 call #t~ret8 := fibonacci(~n - 2);< 875#fibonacciENTRY ~n := #in~n; 885#L17 assume ~n < 1;#res := 0; 886#fibonacciFINAL assume true; 890#fibonacciEXIT >#36#return; 891#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 893#fibonacciFINAL assume true; 896#fibonacciEXIT >#34#return; 874#L22-1 [2021-10-28 22:53:48,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:48,895 INFO L85 PathProgramCache]: Analyzing trace with hash 506180814, now seen corresponding path program 2 times [2021-10-28 22:53:48,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:48,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098628860] [2021-10-28 22:53:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:48,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:48,915 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:48,931 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:48,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:48,932 INFO L85 PathProgramCache]: Analyzing trace with hash 319636608, now seen corresponding path program 2 times [2021-10-28 22:53:48,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:48,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627102426] [2021-10-28 22:53:48,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:48,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:48,941 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:48,959 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1200508531, now seen corresponding path program 3 times [2021-10-28 22:53:48,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:48,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413876561] [2021-10-28 22:53:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:48,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 22:53:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 22:53:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-10-28 22:53:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 22:53:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-28 22:53:49,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:49,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413876561] [2021-10-28 22:53:49,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413876561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:49,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496575271] [2021-10-28 22:53:49,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:53:49,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:53:49,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:49,139 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:53:49,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 22:53:49,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-28 22:53:49,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:53:49,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 22:53:49,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-28 22:53:49,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496575271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:49,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:53:49,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-10-28 22:53:49,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250428252] [2021-10-28 22:53:49,656 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:49,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:49,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:49,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:49,656 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:53:49,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:49,656 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:49,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:49,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration4_Loop [2021-10-28 22:53:49,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:49,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:49,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:49,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:49,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:49,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:49,704 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:49,704 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:53:49,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:49,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:49,705 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:49,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:49,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:49,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 22:53:49,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:49,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:49,758 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:49,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 22:53:49,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:53:49,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:50,532 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:53:50,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:50,536 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:50,536 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:50,536 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:50,536 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:50,536 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:53:50,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:50,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:50,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:50,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration4_Loop [2021-10-28 22:53:50,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:50,537 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:50,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:50,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:50,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:50,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:50,579 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:50,580 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:53:50,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:50,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:50,581 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:50,582 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:50,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 22:53:50,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:50,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:50,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:50,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:50,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:50,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:50,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:50,595 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:53:50,597 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 22:53:50,597 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 22:53:50,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:50,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:50,600 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:50,604 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:53:50,604 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:53:50,604 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:53:50,604 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-28 22:53:50,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 22:53:50,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 22:53:50,624 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:53:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:50,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:53:50,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:50,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:51,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:53:51,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 22:53:51,304 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-28 22:53:51,304 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 22:53:51,399 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2021-10-28 22:53:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 22:53:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2021-10-28 22:53:51,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-28 22:53:51,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:51,403 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:53:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:51,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:53:51,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:51,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:53:51,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 22:53:52,002 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-28 22:53:52,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 22:53:52,096 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2021-10-28 22:53:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 22:53:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2021-10-28 22:53:52,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-28 22:53:52,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:52,099 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:53:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:52,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:53:52,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:52,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:53:52,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 22:53:52,643 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-28 22:53:52,643 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 22:53:52,958 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 345 states and 444 transitions. Complement of second has 125 states. [2021-10-28 22:53:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 22:53:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2021-10-28 22:53:52,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-28 22:53:52,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:52,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 47 letters. Loop has 22 letters. [2021-10-28 22:53:52,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:52,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 44 letters. [2021-10-28 22:53:52,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:52,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 444 transitions. [2021-10-28 22:53:52,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 22:53:52,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 220 states and 297 transitions. [2021-10-28 22:53:52,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2021-10-28 22:53:52,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2021-10-28 22:53:52,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 297 transitions. [2021-10-28 22:53:53,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:53,000 INFO L681 BuchiCegarLoop]: Abstraction has 220 states and 297 transitions. [2021-10-28 22:53:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 297 transitions. [2021-10-28 22:53:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2021-10-28 22:53:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 112 states have internal predecessors, (122), 38 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (59), 36 states have call predecessors, (59), 36 states have call successors, (59) [2021-10-28 22:53:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2021-10-28 22:53:53,045 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 223 transitions. [2021-10-28 22:53:53,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:53:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:53:53,046 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 14 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 9 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2021-10-28 22:53:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:53,227 INFO L93 Difference]: Finished difference Result 273 states and 374 transitions. [2021-10-28 22:53:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 22:53:53,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 273 states and 374 transitions. [2021-10-28 22:53:53,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 22:53:53,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 273 states to 272 states and 372 transitions. [2021-10-28 22:53:53,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-28 22:53:53,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 153 [2021-10-28 22:53:53,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 372 transitions. [2021-10-28 22:53:53,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:53,240 INFO L681 BuchiCegarLoop]: Abstraction has 272 states and 372 transitions. [2021-10-28 22:53:53,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 372 transitions. [2021-10-28 22:53:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 218. [2021-10-28 22:53:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 135 states have (on average 1.1185185185185185) internal successors, (151), 140 states have internal predecessors, (151), 47 states have call successors, (55), 28 states have call predecessors, (55), 36 states have return successors, (92), 49 states have call predecessors, (92), 45 states have call successors, (92) [2021-10-28 22:53:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 298 transitions. [2021-10-28 22:53:53,266 INFO L704 BuchiCegarLoop]: Abstraction has 218 states and 298 transitions. [2021-10-28 22:53:53,266 INFO L587 BuchiCegarLoop]: Abstraction has 218 states and 298 transitions. [2021-10-28 22:53:53,266 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 22:53:53,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 298 transitions. [2021-10-28 22:53:53,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 22:53:53,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:53,269 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:53,270 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 6, 6, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 22:53:53,270 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 22:53:53,270 INFO L791 eck$LassoCheckResult]: Stem: 2661#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2662#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 2667#L29 assume !(main_~x~0 < 1); 2668#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 2672#fibonacciENTRY ~n := #in~n; 2707#L17 assume !(~n < 1); 2705#L19 assume !(1 == ~n); 2698#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2708#L17 assume !(~n < 1); 2737#L19 assume 1 == ~n;#res := 1; 2736#fibonacciFINAL assume true; 2734#fibonacciEXIT >#34#return; 2730#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2732#fibonacciENTRY ~n := #in~n; 2743#L17 assume ~n < 1;#res := 0; 2741#fibonacciFINAL assume true; 2729#fibonacciEXIT >#36#return; 2728#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2727#fibonacciFINAL assume true; 2717#fibonacciEXIT >#34#return; 2712#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2716#fibonacciENTRY ~n := #in~n; 2722#L17 assume !(~n < 1); 2720#L19 assume 1 == ~n;#res := 1; 2718#fibonacciFINAL assume true; 2711#fibonacciEXIT >#36#return; 2699#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2702#fibonacciFINAL assume true; 2696#fibonacciEXIT >#34#return; 2656#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2691#fibonacciENTRY ~n := #in~n; 2689#L17 assume !(~n < 1); 2690#L19 assume !(1 == ~n); 2655#L22 call #t~ret7 := fibonacci(~n - 1);< 2658#fibonacciENTRY ~n := #in~n; 2826#L17 assume !(~n < 1); 2827#L19 assume !(1 == ~n); 2804#L22 call #t~ret7 := fibonacci(~n - 1);< 2806#fibonacciENTRY [2021-10-28 22:53:53,271 INFO L793 eck$LassoCheckResult]: Loop: 2806#fibonacciENTRY ~n := #in~n; 2818#L17 assume !(~n < 1); 2816#L19 assume !(1 == ~n); 2805#L22 call #t~ret7 := fibonacci(~n - 1);< 2806#fibonacciENTRY [2021-10-28 22:53:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2139327112, now seen corresponding path program 4 times [2021-10-28 22:53:53,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:53,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580463866] [2021-10-28 22:53:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:53,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 22:53:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 22:53:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 22:53:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-28 22:53:53,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:53,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580463866] [2021-10-28 22:53:53,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580463866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:53,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37286815] [2021-10-28 22:53:53,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:53:53,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:53:53,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:53,484 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:53:53,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 22:53:53,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:53:53,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:53:53,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 22:53:53,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-28 22:53:53,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37286815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:53,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:53:53,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2021-10-28 22:53:53,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509960889] [2021-10-28 22:53:53,848 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:53:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash 927646, now seen corresponding path program 2 times [2021-10-28 22:53:53,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:53,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902746768] [2021-10-28 22:53:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:53,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:53,855 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:53,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:53,896 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:53,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:53,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:53,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:53,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:53:53,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:53,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:53,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:53,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration5_Loop [2021-10-28 22:53:53,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:53,898 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:53,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:53,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:53,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:53,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:53,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:53,947 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:53,948 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:53:53,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:53,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:53,952 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:53,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:53,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:53,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 22:53:53,976 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:53,976 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:54,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,012 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:54,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:54,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 22:53:54,036 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:54,036 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret7=0} Honda state: {fibonacci_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:54,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,074 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:54,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:54,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 22:53:54,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:54,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:54,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,149 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:54,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:54,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 22:53:54,172 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:54,172 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:54,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,209 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:54,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:54,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 22:53:54,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,292 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:53:54,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:54,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 22:53:54,412 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:53:54,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,419 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:54,419 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:54,419 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:54,419 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:54,419 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:53:54,419 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,419 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:54,419 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:54,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration5_Loop [2021-10-28 22:53:54,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:54,420 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:54,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:54,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:54,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:54,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:54,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:54,465 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:54,465 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:53:54,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,467 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:54,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 22:53:54,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:54,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:54,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:54,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:54,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:54,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:54,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:54,497 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:54,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,536 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:54,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:54,549 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:54,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:54,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:54,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:54,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:54,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:54,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 22:53:54,567 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:54,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,599 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 22:53:54,601 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:54,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:54,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:54,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:54,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:54,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:54,610 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:54,610 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:54,620 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:54,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,645 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 22:53:54,646 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:54,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:54,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:54,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:54,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:54,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:54,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:54,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:54,655 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:54,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:54,676 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,677 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 22:53:54,679 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:53:54,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:54,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:54,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:54,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:54,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:54,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:54,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:54,689 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:53:54,691 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:53:54,691 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 22:53:54,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:54,692 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:54,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 22:53:54,693 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:53:54,693 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:53:54,693 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:53:54,693 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2021-10-28 22:53:54,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-10-28 22:53:54,713 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:53:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:54,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 22:53:54,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:55,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:53:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:55,466 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-28 22:53:55,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:53:55,528 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 240 states and 323 transitions. Complement of second has 13 states. [2021-10-28 22:53:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:53:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-28 22:53:55,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-28 22:53:55,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:55,529 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:53:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:55,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 22:53:55,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:53:56,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:56,135 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-28 22:53:56,135 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:53:56,189 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 240 states and 323 transitions. Complement of second has 13 states. [2021-10-28 22:53:56,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:53:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-28 22:53:56,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-28 22:53:56,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:56,191 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:53:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 22:53:56,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:56,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:53:56,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:56,891 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-28 22:53:56,892 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:53:56,964 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 291 states and 376 transitions. Complement of second has 14 states. [2021-10-28 22:53:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:53:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-10-28 22:53:56,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-28 22:53:56,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:56,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 55 letters. Loop has 4 letters. [2021-10-28 22:53:56,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:56,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 51 letters. Loop has 8 letters. [2021-10-28 22:53:56,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:56,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 291 states and 376 transitions. [2021-10-28 22:53:56,974 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 22:53:56,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 291 states to 236 states and 319 transitions. [2021-10-28 22:53:56,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 108 [2021-10-28 22:53:56,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 111 [2021-10-28 22:53:56,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 236 states and 319 transitions. [2021-10-28 22:53:56,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:56,983 INFO L681 BuchiCegarLoop]: Abstraction has 236 states and 319 transitions. [2021-10-28 22:53:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states and 319 transitions. [2021-10-28 22:53:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-10-28 22:53:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 151 states have internal predecessors, (162), 48 states have call successors, (56), 29 states have call predecessors, (56), 36 states have return successors, (94), 49 states have call predecessors, (94), 46 states have call successors, (94) [2021-10-28 22:53:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 312 transitions. [2021-10-28 22:53:57,011 INFO L704 BuchiCegarLoop]: Abstraction has 230 states and 312 transitions. [2021-10-28 22:53:57,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:53:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:53:57,013 INFO L87 Difference]: Start difference. First operand 230 states and 312 transitions. Second operand has 13 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-28 22:53:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:57,157 INFO L93 Difference]: Finished difference Result 415 states and 605 transitions. [2021-10-28 22:53:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:53:57,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 415 states and 605 transitions. [2021-10-28 22:53:57,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 22:53:57,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 415 states to 402 states and 587 transitions. [2021-10-28 22:53:57,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 214 [2021-10-28 22:53:57,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-10-28 22:53:57,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 587 transitions. [2021-10-28 22:53:57,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:53:57,175 INFO L681 BuchiCegarLoop]: Abstraction has 402 states and 587 transitions. [2021-10-28 22:53:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states and 587 transitions. [2021-10-28 22:53:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 292. [2021-10-28 22:53:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 64 states have call successors, (76), 37 states have call predecessors, (76), 46 states have return successors, (146), 69 states have call predecessors, (146), 62 states have call successors, (146) [2021-10-28 22:53:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 426 transitions. [2021-10-28 22:53:57,194 INFO L704 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-28 22:53:57,194 INFO L587 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-28 22:53:57,194 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 22:53:57,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 292 states and 426 transitions. [2021-10-28 22:53:57,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 22:53:57,197 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:57,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:57,199 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [14, 12, 9, 9, 8, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2021-10-28 22:53:57,200 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 22:53:57,200 INFO L791 eck$LassoCheckResult]: Stem: 5102#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5103#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 5107#L29 assume !(main_~x~0 < 1); 5108#L31 call main_#t~ret10 := fibonacci(main_~x~0);< 5115#fibonacciENTRY ~n := #in~n; 5147#L17 assume !(~n < 1); 5146#L19 assume !(1 == ~n); 5138#L22 call #t~ret7 := fibonacci(~n - 1);< 5145#fibonacciENTRY ~n := #in~n; 5280#L17 assume !(~n < 1); 5281#L19 assume !(1 == ~n); 5139#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5283#L17 assume !(~n < 1); 5148#L19 assume !(1 == ~n); 5137#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5283#L17 assume !(~n < 1); 5148#L19 assume !(1 == ~n); 5137#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5283#L17 assume !(~n < 1); 5148#L19 assume !(1 == ~n); 5137#L22 call #t~ret7 := fibonacci(~n - 1);< 5141#fibonacciENTRY ~n := #in~n; 5282#L17 assume !(~n < 1); 5299#L19 assume 1 == ~n;#res := 1; 5298#fibonacciFINAL assume true; 5295#fibonacciEXIT >#34#return; 5291#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5292#fibonacciENTRY ~n := #in~n; 5297#L17 assume ~n < 1;#res := 0; 5294#fibonacciFINAL assume true; 5290#fibonacciEXIT >#36#return; 5288#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5287#fibonacciFINAL assume true; 5286#fibonacciEXIT >#34#return; 5184#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5186#fibonacciENTRY ~n := #in~n; 5225#L17 assume !(~n < 1); 5190#L19 assume 1 == ~n;#res := 1; 5188#fibonacciFINAL assume true; 5183#fibonacciEXIT >#36#return; 5171#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5169#fibonacciFINAL assume true; 5164#fibonacciEXIT >#34#return; 5162#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5166#fibonacciENTRY ~n := #in~n; 5194#L17 assume !(~n < 1); 5191#L19 assume !(1 == ~n); 5192#L22 call #t~ret7 := fibonacci(~n - 1);< 5209#fibonacciENTRY ~n := #in~n; 5284#L17 assume !(~n < 1); 5211#L19 assume 1 == ~n;#res := 1; 5210#fibonacciFINAL assume true; 5207#fibonacciEXIT >#34#return; 5175#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5180#fibonacciENTRY ~n := #in~n; 5206#L17 assume ~n < 1;#res := 0; 5205#fibonacciFINAL assume true; 5172#fibonacciEXIT >#36#return; 5178#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5167#fibonacciFINAL assume true; 5161#fibonacciEXIT >#36#return; 5140#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5143#fibonacciFINAL assume true; 5136#fibonacciEXIT >#34#return; 5127#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5132#fibonacciENTRY ~n := #in~n; 5126#L17 assume !(~n < 1); 5129#L19 assume !(1 == ~n); 5096#L22 call #t~ret7 := fibonacci(~n - 1);< 5301#fibonacciENTRY ~n := #in~n; 5094#L17 assume !(~n < 1); 5097#L19 assume !(1 == ~n); 5087#L22 call #t~ret7 := fibonacci(~n - 1);< 5085#fibonacciENTRY ~n := #in~n; 5089#L17 assume !(~n < 1); 5342#L19 assume !(1 == ~n); 5086#L22 [2021-10-28 22:53:57,200 INFO L793 eck$LassoCheckResult]: Loop: 5086#L22 call #t~ret7 := fibonacci(~n - 1);< 5085#fibonacciENTRY ~n := #in~n; 5089#L17 assume !(~n < 1); 5342#L19 assume !(1 == ~n); 5086#L22 [2021-10-28 22:53:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash -970341416, now seen corresponding path program 5 times [2021-10-28 22:53:57,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:57,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739092978] [2021-10-28 22:53:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:57,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 22:53:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 22:53:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 22:53:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 22:53:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 22:53:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 22:53:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 125 proven. 115 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-28 22:53:57,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:57,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739092978] [2021-10-28 22:53:57,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739092978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:57,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687687399] [2021-10-28 22:53:57,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:53:57,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:53:57,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:57,411 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:53:57,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-28 22:53:57,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-28 22:53:57,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:53:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:53:57,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 129 proven. 109 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-28 22:53:58,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687687399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:53:58,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:53:58,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 16 [2021-10-28 22:53:58,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609948331] [2021-10-28 22:53:58,103 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:53:58,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:58,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1906756, now seen corresponding path program 3 times [2021-10-28 22:53:58,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:58,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3115564] [2021-10-28 22:53:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:58,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,112 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,115 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:58,162 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:58,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:58,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:58,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:58,162 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:53:58,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:58,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:58,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:58,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration6_Loop [2021-10-28 22:53:58,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:58,163 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:58,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:58,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:58,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:58,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:58,215 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:58,215 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:53:58,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:58,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:58,216 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:58,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 22:53:58,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:58,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:58,227 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:53:58,228 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:53:58,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:58,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:58,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:58,251 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:58,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 22:53:58,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:53:58,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:58,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-28 22:53:58,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:58,291 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:58,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:53:58,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:53:58,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 22:54:03,974 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:54:03,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:03,983 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:54:03,983 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:54:03,983 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:54:03,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:54:03,984 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:54:03,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:54:03,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:54:03,984 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:54:03,984 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration6_Loop [2021-10-28 22:54:03,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:54:03,984 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:54:03,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:54:03,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:54:03,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:54:03,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:54:04,030 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:54:04,030 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:54:04,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:54:04,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:04,031 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:04,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 22:54:04,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:54:04,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:54:04,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:54:04,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:54:04,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:54:04,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:54:04,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:54:04,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:54:04,047 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:54:04,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:04,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:54:04,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:04,067 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:04,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 22:54:04,068 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:54:04,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:54:04,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:54:04,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:54:04,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:54:04,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:54:04,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:54:04,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:54:04,077 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:54:04,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 22:54:04,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:54:04,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:04,096 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:04,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 22:54:04,097 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:54:04,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:54:04,104 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:54:04,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:54:04,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:54:04,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:54:04,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:54:04,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:54:04,106 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:54:04,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-28 22:54:04,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:54:04,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:04,125 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:04,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 22:54:04,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:54:04,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:54:04,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:54:04,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:54:04,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:54:04,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:54:04,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:54:04,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:54:04,136 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:54:04,138 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:54:04,139 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 22:54:04,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:54:04,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:04,140 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:04,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 22:54:04,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:54:04,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:54:04,142 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:54:04,142 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-28 22:54:04,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:04,161 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:54:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 22:54:04,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:04,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:05,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:54:05,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:05,369 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-28 22:54:05,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:54:05,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 301 states and 436 transitions. Complement of second has 18 states. [2021-10-28 22:54:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 22:54:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:54:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2021-10-28 22:54:05,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 79 letters. Loop has 4 letters. [2021-10-28 22:54:05,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:54:05,423 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:54:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:05,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 22:54:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:06,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:54:06,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:06,467 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-28 22:54:06,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:54:06,547 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 307 states and 442 transitions. Complement of second has 17 states. [2021-10-28 22:54:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-28 22:54:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:54:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-10-28 22:54:06,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 79 letters. Loop has 4 letters. [2021-10-28 22:54:06,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:54:06,549 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:54:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:06,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 22:54:06,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:07,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:54:07,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:07,684 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-28 22:54:07,684 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:54:07,761 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 354 states and 504 transitions. Complement of second has 27 states. [2021-10-28 22:54:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 22:54:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:54:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2021-10-28 22:54:07,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 79 letters. Loop has 4 letters. [2021-10-28 22:54:07,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:54:07,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 83 letters. Loop has 4 letters. [2021-10-28 22:54:07,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:54:07,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 79 letters. Loop has 8 letters. [2021-10-28 22:54:07,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:54:07,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 354 states and 504 transitions. [2021-10-28 22:54:07,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 22:54:07,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 354 states to 292 states and 426 transitions. [2021-10-28 22:54:07,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 136 [2021-10-28 22:54:07,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2021-10-28 22:54:07,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 426 transitions. [2021-10-28 22:54:07,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:54:07,778 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-28 22:54:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 426 transitions. [2021-10-28 22:54:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-28 22:54:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 64 states have call successors, (76), 37 states have call predecessors, (76), 46 states have return successors, (146), 69 states have call predecessors, (146), 62 states have call successors, (146) [2021-10-28 22:54:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 426 transitions. [2021-10-28 22:54:07,796 INFO L704 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-28 22:54:07,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 22:54:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-28 22:54:07,797 INFO L87 Difference]: Start difference. First operand 292 states and 426 transitions. Second operand has 17 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2021-10-28 22:54:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:07,989 INFO L93 Difference]: Finished difference Result 417 states and 613 transitions. [2021-10-28 22:54:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 22:54:07,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 417 states and 613 transitions. [2021-10-28 22:54:07,996 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:54:07,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 417 states to 0 states and 0 transitions. [2021-10-28 22:54:07,997 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:54:07,997 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:54:07,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:54:07,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:07,997 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:54:07,997 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:54:07,998 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:54:07,998 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 22:54:07,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:54:07,998 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:54:07,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 22:54:08,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:54:08 BoogieIcfgContainer [2021-10-28 22:54:08,004 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:54:08,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:54:08,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:54:08,005 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:54:08,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:43" (3/4) ... [2021-10-28 22:54:08,008 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:54:08,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:54:08,010 INFO L168 Benchmark]: Toolchain (without parser) took 25119.79 ms. Allocated memory was 88.1 MB in the beginning and 172.0 MB in the end (delta: 83.9 MB). Free memory was 57.6 MB in the beginning and 92.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:08,010 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 88.1 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:08,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.06 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 57.4 MB in the beginning and 94.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:08,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 117.4 MB. Free memory was 94.5 MB in the beginning and 92.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:08,011 INFO L168 Benchmark]: Boogie Preprocessor took 48.27 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 91.9 MB in the end (delta: 941.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:08,012 INFO L168 Benchmark]: RCFGBuilder took 352.17 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 83.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:08,012 INFO L168 Benchmark]: BuchiAutomizer took 24422.23 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 82.8 MB in the beginning and 92.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:08,012 INFO L168 Benchmark]: Witness Printer took 4.04 ms. Allocated memory is still 172.0 MB. Free memory is still 92.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:08,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 88.1 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.06 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 57.4 MB in the beginning and 94.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 117.4 MB. Free memory was 94.5 MB in the beginning and 92.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.27 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 91.9 MB in the end (delta: 941.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 352.17 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 83.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 24422.23 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 82.8 MB in the beginning and 92.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.04 ms. Allocated memory is still 172.0 MB. Free memory is still 92.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. One nondeterministic module has affine ranking function n and consists of 6 locations. 5 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 24.3s and 7 iterations. TraceHistogramMax:14. Analysis of lassos took 13.9s. Construction of modules took 0.7s. Büchi inclusion checks took 9.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 248 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 292 states and ocurred in iteration 5. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 206 SDtfs, 480 SDslu, 271 SDs, 0 SdLazy, 817 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI1 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf94 lsp94 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq181 hnf93 smp75 dnf100 smp100 tf110 neg96 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 22:54:08,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:08,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:08,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-28 22:54:08,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:08,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c190793-8241-4aeb-b020-c7906acb4140/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...