./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:02:53,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:02:53,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:02:54,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:02:54,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:02:54,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:02:54,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:02:54,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:02:54,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:02:54,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:02:54,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:02:54,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:02:54,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:02:54,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:02:54,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:02:54,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:02:54,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:02:54,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:02:54,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:02:54,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:02:54,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:02:54,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:02:54,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:02:54,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:02:54,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:02:54,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:02:54,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:02:54,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:02:54,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:02:54,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:02:54,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:02:54,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:02:54,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:02:54,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:02:54,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:02:54,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:02:54,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:02:54,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:02:54,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:02:54,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:02:54,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:02:54,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:02:54,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:02:54,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:02:54,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:02:54,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:02:54,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:02:54,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:02:54,132 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:02:54,133 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:02:54,133 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:02:54,133 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:02:54,134 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:02:54,134 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:02:54,134 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:02:54,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:02:54,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:02:54,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:02:54,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:02:54,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:02:54,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:02:54,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:02:54,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:02:54,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:02:54,136 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:02:54,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:02:54,137 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:02:54,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:02:54,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:02:54,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:02:54,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:02:54,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:02:54,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:02:54,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:02:54,140 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:02:54,141 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_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2021-10-21 19:02:54,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:02:54,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:02:54,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:02:54,447 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:02:54,448 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:02:54,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/recursive/Fibonacci03.c [2021-10-21 19:02:54,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/data/65b32de32/0869b0d2426143af821b4d185515870d/FLAG25c6d52f7 [2021-10-21 19:02:54,986 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:02:54,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/sv-benchmarks/c/recursive/Fibonacci03.c [2021-10-21 19:02:54,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/data/65b32de32/0869b0d2426143af821b4d185515870d/FLAG25c6d52f7 [2021-10-21 19:02:55,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/data/65b32de32/0869b0d2426143af821b4d185515870d [2021-10-21 19:02:55,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:02:55,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:02:55,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:02:55,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:02:55,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:02:55,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3112a376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55, skipping insertion in model container [2021-10-21 19:02:55,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:02:55,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:02:55,607 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_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2021-10-21 19:02:55,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:02:55,617 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:02:55,627 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_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2021-10-21 19:02:55,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:02:55,639 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:02:55,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55 WrapperNode [2021-10-21 19:02:55,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:02:55,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:02:55,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:02:55,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:02:55,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:02:55,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:02:55,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:02:55,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:02:55,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:02:55,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:02:55,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:02:55,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:02:55,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (1/1) ... [2021-10-21 19:02:55,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:55,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:55,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:55,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:02:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-10-21 19:02:55,793 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-10-21 19:02:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:02:55,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:02:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:02:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:02:56,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:02:56,006 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:02:56,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:56 BoogieIcfgContainer [2021-10-21 19:02:56,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:02:56,009 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:02:56,009 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:02:56,016 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:02:56,017 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:02:56,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:02:55" (1/3) ... [2021-10-21 19:02:56,019 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@621db4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:02:56, skipping insertion in model container [2021-10-21 19:02:56,019 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:02:56,019 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:55" (2/3) ... [2021-10-21 19:02:56,019 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@621db4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:02:56, skipping insertion in model container [2021-10-21 19:02:56,019 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:02:56,020 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:56" (3/3) ... [2021-10-21 19:02:56,023 INFO L389 chiAutomizerObserver]: Analyzing ICFG Fibonacci03.c [2021-10-21 19:02:56,066 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:02:56,066 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:02:56,066 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:02:56,067 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:02:56,067 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:02:56,067 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:02:56,067 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:02:56,067 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:02:56,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:02:56,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:02:56,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:02:56,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:02:56,112 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:02:56,112 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:02:56,112 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:02:56,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:02:56,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:02:56,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:02:56,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:02:56,116 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:02:56,116 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:02:56,123 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(14);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 14#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; 11#L29true assume !(main_~x~0 > 46); 15#L32true call main_#t~ret10 := fibonacci(main_~x~0);< 5#fibonacciENTRYtrue [2021-10-21 19:02:56,123 INFO L793 eck$LassoCheckResult]: Loop: 5#fibonacciENTRYtrue ~n := #in~n; 6#L17true assume !(~n < 1); 19#L19true assume !(1 == ~n); 18#L22true call #t~ret7 := fibonacci(~n - 1);< 5#fibonacciENTRYtrue [2021-10-21 19:02:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:56,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1325876, now seen corresponding path program 1 times [2021-10-21 19:02:56,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:56,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188720317] [2021-10-21 19:02:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:56,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:56,232 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:02:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:56,269 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:02:56,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:56,272 INFO L82 PathProgramCache]: Analyzing trace with hash 927646, now seen corresponding path program 1 times [2021-10-21 19:02:56,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:56,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739474365] [2021-10-21 19:02:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:56,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:56,280 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:02:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:56,286 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:02:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:56,288 INFO L82 PathProgramCache]: Analyzing trace with hash 408654161, now seen corresponding path program 1 times [2021-10-21 19:02:56,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:56,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178536381] [2021-10-21 19:02:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:56,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:56,309 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:02:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:56,330 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:02:56,454 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:02:56,454 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:02:56,454 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:02:56,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:02:56,455 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:02:56,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:02:56,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:02:56,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration1_Loop [2021-10-21 19:02:56,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:02:56,456 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:02:56,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,583 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:02:56,584 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:02:56,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:56,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:56,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:02:56,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:56,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:56,612 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:02:56,612 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:02:56,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:56,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:56,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:02:56,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:56,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:56,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:02:56,664 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret7=0} Honda state: {fibonacci_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:02:56,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:56,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:56,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:56,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:56,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:56,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:02:56,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:02:56,756 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:02:56,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:56,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:56,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:56,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:02:56,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:56,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:56,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:02:56,803 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:02:56,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:56,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:56,833 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:56,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:02:56,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:56,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:56,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:56,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:56,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:56,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:02:56,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:02:56,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:56,969 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:02:56,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:56,975 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:02:56,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:02:56,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:02:56,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:02:56,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:02:56,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:56,975 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:02:56,975 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:02:56,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration1_Loop [2021-10-21 19:02:56,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:02:56,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:02:56,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:56,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:57,076 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:02:57,080 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:02:57,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:57,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:57,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:57,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:02:57,097 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 [2021-10-21 19:02:57,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:02:57,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:02:57,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:02:57,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:02:57,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:02:57,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:02:57,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:02:57,164 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:02:57,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:57,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:57,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:57,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:57,242 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:02:57,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:02:57,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:02:57,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:02:57,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:02:57,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:02:57,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:02:57,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:02:57,273 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:02:57,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:02:57,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:57,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:57,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:57,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:02:57,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:02:57,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:02:57,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:02:57,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:02:57,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:02:57,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:02:57,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:02:57,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:02:57,347 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:02:57,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:57,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:57,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:57,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:57,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:02:57,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:02:57,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:02:57,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:02:57,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:02:57,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:02:57,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:02:57,383 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:02:57,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:02:57,387 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:02:57,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:57,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:57,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:57,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:57,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:02:57,414 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:02:57,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:02:57,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:02:57,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:02:57,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:02:57,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:02:57,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:02:57,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:02:57,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:02:57,460 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:02:57,461 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:02:57,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:57,463 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:57,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:02:57,500 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:02:57,500 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:02:57,500 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:02:57,500 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2021-10-21 19:02:57,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:57,523 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:02:57,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:57,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:02:57,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:02:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:57,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:02:57,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:02:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:57,681 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-21 19:02:57,683 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:57,777 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 51 states and 63 transitions. Complement of second has 12 states. [2021-10-21 19:02:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:02:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-21 19:02:57,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-21 19:02:57,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:02:57,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-21 19:02:57,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:02:57,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-21 19:02:57,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:02:57,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2021-10-21 19:02:57,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:02:57,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 26 states and 35 transitions. [2021-10-21 19:02:57,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-21 19:02:57,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-21 19:02:57,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 35 transitions. [2021-10-21 19:02:57,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:02:57,799 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-10-21 19:02:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 35 transitions. [2021-10-21 19:02:57,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-21 19:02:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:02:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-10-21 19:02:57,823 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-10-21 19:02:57,823 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-10-21 19:02:57,823 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:02:57,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2021-10-21 19:02:57,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:02:57,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:02:57,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:02:57,826 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:57,826 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:57,826 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(14);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 > 46); 131#L32 call main_#t~ret10 := fibonacci(main_~x~0);< 133#fibonacciENTRY ~n := #in~n; 134#L17 assume !(~n < 1); 139#L19 assume !(1 == ~n); 129#L22 call #t~ret7 := fibonacci(~n - 1);< 135#fibonacciENTRY ~n := #in~n; 136#L17 assume ~n < 1;#res := 0; 137#fibonacciFINAL assume true; 142#fibonacciEXIT >#34#return; 128#L22-1 [2021-10-21 19:02:57,827 INFO L793 eck$LassoCheckResult]: Loop: 128#L22-1 call #t~ret8 := fibonacci(~n - 2);< 132#fibonacciENTRY ~n := #in~n; 148#L17 assume !(~n < 1); 147#L19 assume !(1 == ~n); 130#L22 call #t~ret7 := fibonacci(~n - 1);< 132#fibonacciENTRY ~n := #in~n; 148#L17 assume ~n < 1;#res := 0; 145#fibonacciFINAL assume true; 146#fibonacciEXIT >#34#return; 128#L22-1 [2021-10-21 19:02:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:57,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1923124650, now seen corresponding path program 1 times [2021-10-21 19:02:57,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:57,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965042917] [2021-10-21 19:02:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:57,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:57,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 19:02:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:02:57,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:57,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965042917] [2021-10-21 19:02:57,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965042917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:57,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:57,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:02:57,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699244318] [2021-10-21 19:02:57,919 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:02:57,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:57,920 INFO L82 PathProgramCache]: Analyzing trace with hash 481649848, now seen corresponding path program 1 times [2021-10-21 19:02:57,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:57,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202686579] [2021-10-21 19:02:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:57,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:02:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:02:57,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:57,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202686579] [2021-10-21 19:02:57,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202686579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:57,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:57,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:02:57,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646562718] [2021-10-21 19:02:57,965 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:02:57,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:02:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:02:57,969 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:02:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:02:58,029 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-10-21 19:02:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:02:58,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2021-10-21 19:02:58,032 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:02:58,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2021-10-21 19:02:58,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-21 19:02:58,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-21 19:02:58,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2021-10-21 19:02:58,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:02:58,034 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-21 19:02:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2021-10-21 19:02:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-21 19:02:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-21 19:02:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-10-21 19:02:58,039 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-21 19:02:58,039 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-21 19:02:58,039 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:02:58,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2021-10-21 19:02:58,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:02:58,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:02:58,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:02:58,041 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:58,042 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:02:58,042 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(14);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 > 46); 204#L32 call main_#t~ret10 := fibonacci(main_~x~0);< 221#fibonacciENTRY ~n := #in~n; 210#L17 assume !(~n < 1); 214#L19 assume !(1 == ~n); 205#L22 call #t~ret7 := fibonacci(~n - 1);< 209#fibonacciENTRY ~n := #in~n; 211#L17 assume !(~n < 1); 227#L19 assume 1 == ~n;#res := 1; 226#fibonacciFINAL assume true; 225#fibonacciEXIT >#34#return; 203#L22-1 [2021-10-21 19:02:58,042 INFO L793 eck$LassoCheckResult]: Loop: 203#L22-1 call #t~ret8 := fibonacci(~n - 2);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume !(1 == ~n); 206#L22 call #t~ret7 := fibonacci(~n - 1);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume !(1 == ~n); 206#L22 call #t~ret7 := fibonacci(~n - 1);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume !(~n < 1); 213#L19 assume 1 == ~n;#res := 1; 222#fibonacciFINAL assume true; 223#fibonacciEXIT >#34#return; 203#L22-1 call #t~ret8 := fibonacci(~n - 2);< 207#fibonacciENTRY ~n := #in~n; 208#L17 assume ~n < 1;#res := 0; 212#fibonacciFINAL assume true; 217#fibonacciEXIT >#36#return; 218#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 220#fibonacciFINAL assume true; 224#fibonacciEXIT >#34#return; 203#L22-1 [2021-10-21 19:02:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:58,043 INFO L82 PathProgramCache]: Analyzing trace with hash -512653656, now seen corresponding path program 1 times [2021-10-21 19:02:58,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:58,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035159628] [2021-10-21 19:02:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:58,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:58,057 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:02:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:58,077 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:02:58,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:58,078 INFO L82 PathProgramCache]: Analyzing trace with hash 319636608, now seen corresponding path program 1 times [2021-10-21 19:02:58,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:58,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418466919] [2021-10-21 19:02:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:58,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:58,089 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:02:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:02:58,100 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:02:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:58,101 INFO L82 PathProgramCache]: Analyzing trace with hash 911295463, now seen corresponding path program 1 times [2021-10-21 19:02:58,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:58,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443772025] [2021-10-21 19:02:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:58,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 19:02:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-21 19:02:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:02:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:02:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-21 19:02:58,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:58,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443772025] [2021-10-21 19:02:58,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443772025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:02:58,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801178642] [2021-10-21 19:02:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:58,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:02:58,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:58,240 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:02:58,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:02:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:58,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:02:58,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:02:58,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-21 19:02:58,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801178642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:02:58,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:02:58,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 19:02:58,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794780594] [2021-10-21 19:02:58,874 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:02:58,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:02:58,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:02:58,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:02:58,875 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:02:58,875 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:58,875 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:02:58,875 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:02:58,875 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration3_Loop [2021-10-21 19:02:58,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:02:58,875 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:02:58,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:58,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:58,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:58,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:58,960 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:02:58,960 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:02:58,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:58,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:58,961 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:58,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:58,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:58,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:02:58,988 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:02:58,988 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:02:59,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:59,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:59,028 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:59,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:59,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:59,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:02:59,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:02:59,056 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:02:59,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:59,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:59,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:59,094 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:59,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:02:59,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:59,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:02:59,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:59,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:59,164 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:59,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:02:59,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:02:59,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 19:02:59,955 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:02:59,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:02:59,961 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:02:59,961 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:02:59,961 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:02:59,961 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:02:59,961 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:02:59,962 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:02:59,962 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:02:59,962 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:02:59,962 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration3_Loop [2021-10-21 19:02:59,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:02:59,962 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:02:59,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:59,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:59,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:02:59,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:00,064 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:03:00,064 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:03:00,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:00,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:00,068 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:00,072 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:00,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:00,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:00,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:00,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:00,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:00,084 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:00,084 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:00,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:03:00,099 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:00,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:00,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:00,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:00,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:00,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:00,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:00,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:00,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:00,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:00,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:00,159 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:00,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:00,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:03:00,177 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:00,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:00,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:00,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:00,199 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:00,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:03:00,205 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:00,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:00,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:00,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:00,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:00,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:00,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:00,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:00,246 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:00,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:00,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:00,271 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:00,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 19:03:00,273 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:00,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:00,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:00,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:00,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:00,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:00,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:00,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:00,297 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:03:00,301 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:03:00,301 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:03:00,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:00,309 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:00,310 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:03:00,310 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:03:00,310 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:03:00,310 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-21 19:03:00,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:03:00,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:00,347 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:03:00,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:00,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:03:00,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:00,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:00,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:03:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:03:00,803 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-21 19:03:00,803 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 19:03:01,044 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 160 states and 216 transitions. Complement of second has 48 states. [2021-10-21 19:03:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 19:03:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 42 transitions. [2021-10-21 19:03:01,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 22 letters. [2021-10-21 19:03:01,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:01,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 35 letters. Loop has 22 letters. [2021-10-21 19:03:01,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:01,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 44 letters. [2021-10-21 19:03:01,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:01,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 216 transitions. [2021-10-21 19:03:01,058 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-10-21 19:03:01,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 129 states and 181 transitions. [2021-10-21 19:03:01,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2021-10-21 19:03:01,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-10-21 19:03:01,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 181 transitions. [2021-10-21 19:03:01,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:03:01,066 INFO L681 BuchiCegarLoop]: Abstraction has 129 states and 181 transitions. [2021-10-21 19:03:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 181 transitions. [2021-10-21 19:03:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2021-10-21 19:03:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2021-10-21 19:03:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2021-10-21 19:03:01,089 INFO L704 BuchiCegarLoop]: Abstraction has 107 states and 141 transitions. [2021-10-21 19:03:01,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:03:01,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:03:01,093 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-21 19:03:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:01,170 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2021-10-21 19:03:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:03:01,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 58 transitions. [2021-10-21 19:03:01,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:03:01,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 54 transitions. [2021-10-21 19:03:01,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-10-21 19:03:01,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-10-21 19:03:01,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2021-10-21 19:03:01,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:03:01,186 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-21 19:03:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2021-10-21 19:03:01,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-10-21 19:03:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2021-10-21 19:03:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-21 19:03:01,201 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-21 19:03:01,201 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-21 19:03:01,201 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:03:01,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2021-10-21 19:03:01,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:03:01,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:03:01,206 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:03:01,209 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:03:01,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:03:01,210 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(14);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 > 46); 878#L32 call main_#t~ret10 := fibonacci(main_~x~0);< 880#fibonacciENTRY ~n := #in~n; 881#L17 assume !(~n < 1); 887#L19 assume !(1 == ~n); 877#L22 call #t~ret7 := fibonacci(~n - 1);< 879#fibonacciENTRY ~n := #in~n; 883#L17 assume !(~n < 1); 910#L19 assume !(1 == ~n); 882#L22 call #t~ret7 := fibonacci(~n - 1);< 879#fibonacciENTRY ~n := #in~n; 884#L17 assume !(~n < 1); 894#L19 assume 1 == ~n;#res := 1; 895#fibonacciFINAL assume true; 909#fibonacciEXIT >#34#return; 904#L22-1 call #t~ret8 := fibonacci(~n - 2);< 905#fibonacciENTRY ~n := #in~n; 908#L17 assume ~n < 1;#res := 0; 906#fibonacciFINAL assume true; 903#fibonacciEXIT >#36#return; 902#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 901#fibonacciFINAL assume true; 900#fibonacciEXIT >#34#return; 874#L22-1 [2021-10-21 19:03:01,210 INFO L793 eck$LassoCheckResult]: Loop: 874#L22-1 call #t~ret8 := fibonacci(~n - 2);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume !(1 == ~n); 873#L22 call #t~ret7 := fibonacci(~n - 1);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume !(1 == ~n); 873#L22 call #t~ret7 := fibonacci(~n - 1);< 876#fibonacciENTRY ~n := #in~n; 899#L17 assume !(~n < 1); 897#L19 assume 1 == ~n;#res := 1; 898#fibonacciFINAL assume true; 907#fibonacciEXIT >#34#return; 872#L22-1 call #t~ret8 := fibonacci(~n - 2);< 875#fibonacciENTRY ~n := #in~n; 885#L17 assume ~n < 1;#res := 0; 886#fibonacciFINAL assume true; 890#fibonacciEXIT >#36#return; 891#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 893#fibonacciFINAL assume true; 896#fibonacciEXIT >#34#return; 874#L22-1 [2021-10-21 19:03:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:01,211 INFO L82 PathProgramCache]: Analyzing trace with hash 506180814, now seen corresponding path program 2 times [2021-10-21 19:03:01,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:01,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681285835] [2021-10-21 19:03:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:01,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:01,247 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:03:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:01,292 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:03:01,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash 319636608, now seen corresponding path program 2 times [2021-10-21 19:03:01,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:01,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090252571] [2021-10-21 19:03:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:01,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:01,302 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:03:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:01,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:03:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:01,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1200508531, now seen corresponding path program 3 times [2021-10-21 19:03:01,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:01,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216433954] [2021-10-21 19:03:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:01,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 19:03:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:03:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-10-21 19:03:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:03:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-21 19:03:01,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:01,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216433954] [2021-10-21 19:03:01,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216433954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:01,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828882222] [2021-10-21 19:03:01,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:03:01,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:01,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:01,523 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:03:01,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 19:03:01,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-21 19:03:01,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:03:01,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:03:01,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-21 19:03:01,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828882222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:01,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:03:01,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-10-21 19:03:01,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740755111] [2021-10-21 19:03:02,020 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:03:02,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:03:02,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:03:02,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:03:02,021 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:03:02,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:02,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:03:02,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:03:02,021 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration4_Loop [2021-10-21 19:03:02,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:03:02,021 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:03:02,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,069 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:03:02,069 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:03:02,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:02,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:02,076 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:02,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:02,083 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:02,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:03:02,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-10-21 19:03:02,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:02,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:02,130 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:02,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:03:02,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:03:02,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:02,901 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:03:02,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-21 19:03:02,904 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:03:02,904 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:03:02,904 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:03:02,904 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:03:02,904 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:03:02,904 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:02,904 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:03:02,904 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:03:02,904 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration4_Loop [2021-10-21 19:03:02,904 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:03:02,905 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:03:02,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:02,962 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:03:02,962 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:03:02,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:02,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:02,964 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:02,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:02,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:02,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:02,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:02,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:02,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:02,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:02,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:02,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:03:02,995 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:03:02,997 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 19:03:02,997 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:03:02,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:02,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:03,005 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:03,011 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:03:03,011 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:03:03,011 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:03:03,011 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-21 19:03:03,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:03:03,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:03,048 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:03:03,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:03,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:03:03,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:03,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:03:03,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:03:03,650 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-21 19:03:03,650 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:03:03,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:03,735 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2021-10-21 19:03:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:03:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2021-10-21 19:03:03,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-21 19:03:03,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:03,737 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:03:03,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:03,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:03:03,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:04,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:03:04,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:03:04,298 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-21 19:03:04,299 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:03:04,388 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2021-10-21 19:03:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:03:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2021-10-21 19:03:04,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-21 19:03:04,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:04,391 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:03:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:04,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:03:04,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:04,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:03:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:03:04,924 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-21 19:03:04,924 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:03:05,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 345 states and 444 transitions. Complement of second has 125 states. [2021-10-21 19:03:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:03:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2021-10-21 19:03:05,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 22 letters. [2021-10-21 19:03:05,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:05,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 47 letters. Loop has 22 letters. [2021-10-21 19:03:05,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:05,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 44 letters. [2021-10-21 19:03:05,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:05,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 444 transitions. [2021-10-21 19:03:05,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:03:05,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 220 states and 297 transitions. [2021-10-21 19:03:05,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2021-10-21 19:03:05,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2021-10-21 19:03:05,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 297 transitions. [2021-10-21 19:03:05,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:03:05,243 INFO L681 BuchiCegarLoop]: Abstraction has 220 states and 297 transitions. [2021-10-21 19:03:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 297 transitions. [2021-10-21 19:03:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2021-10-21 19:03:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 112 states have internal predecessors, (122), 38 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (59), 36 states have call predecessors, (59), 36 states have call successors, (59) [2021-10-21 19:03:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2021-10-21 19:03:05,261 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 223 transitions. [2021-10-21 19:03:05,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:03:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:03:05,262 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 14 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 9 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2021-10-21 19:03:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:05,453 INFO L93 Difference]: Finished difference Result 273 states and 374 transitions. [2021-10-21 19:03:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:03:05,454 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 273 states and 374 transitions. [2021-10-21 19:03:05,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:03:05,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 273 states to 272 states and 372 transitions. [2021-10-21 19:03:05,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-21 19:03:05,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 153 [2021-10-21 19:03:05,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 372 transitions. [2021-10-21 19:03:05,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:03:05,468 INFO L681 BuchiCegarLoop]: Abstraction has 272 states and 372 transitions. [2021-10-21 19:03:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 372 transitions. [2021-10-21 19:03:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 218. [2021-10-21 19:03:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 135 states have (on average 1.1185185185185185) internal successors, (151), 140 states have internal predecessors, (151), 47 states have call successors, (55), 28 states have call predecessors, (55), 36 states have return successors, (92), 49 states have call predecessors, (92), 45 states have call successors, (92) [2021-10-21 19:03:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 298 transitions. [2021-10-21 19:03:05,486 INFO L704 BuchiCegarLoop]: Abstraction has 218 states and 298 transitions. [2021-10-21 19:03:05,486 INFO L587 BuchiCegarLoop]: Abstraction has 218 states and 298 transitions. [2021-10-21 19:03:05,486 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:03:05,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 298 transitions. [2021-10-21 19:03:05,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:03:05,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:03:05,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:03:05,491 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 6, 6, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-21 19:03:05,491 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:03:05,491 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(14);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 > 46); 2668#L32 call main_#t~ret10 := fibonacci(main_~x~0);< 2672#fibonacciENTRY ~n := #in~n; 2707#L17 assume !(~n < 1); 2705#L19 assume !(1 == ~n); 2698#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2706#L17 assume !(~n < 1); 2704#L19 assume !(1 == ~n); 2697#L22 call #t~ret7 := fibonacci(~n - 1);< 2700#fibonacciENTRY ~n := #in~n; 2708#L17 assume !(~n < 1); 2737#L19 assume 1 == ~n;#res := 1; 2736#fibonacciFINAL assume true; 2734#fibonacciEXIT >#34#return; 2730#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2732#fibonacciENTRY ~n := #in~n; 2743#L17 assume ~n < 1;#res := 0; 2741#fibonacciFINAL assume true; 2729#fibonacciEXIT >#36#return; 2728#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2727#fibonacciFINAL assume true; 2717#fibonacciEXIT >#34#return; 2712#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2716#fibonacciENTRY ~n := #in~n; 2722#L17 assume !(~n < 1); 2720#L19 assume 1 == ~n;#res := 1; 2718#fibonacciFINAL assume true; 2711#fibonacciEXIT >#36#return; 2699#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2702#fibonacciFINAL assume true; 2696#fibonacciEXIT >#34#return; 2656#L22-1 call #t~ret8 := fibonacci(~n - 2);< 2691#fibonacciENTRY ~n := #in~n; 2689#L17 assume !(~n < 1); 2690#L19 assume !(1 == ~n); 2655#L22 call #t~ret7 := fibonacci(~n - 1);< 2658#fibonacciENTRY ~n := #in~n; 2826#L17 assume !(~n < 1); 2827#L19 assume !(1 == ~n); 2804#L22 call #t~ret7 := fibonacci(~n - 1);< 2806#fibonacciENTRY [2021-10-21 19:03:05,491 INFO L793 eck$LassoCheckResult]: Loop: 2806#fibonacciENTRY ~n := #in~n; 2818#L17 assume !(~n < 1); 2816#L19 assume !(1 == ~n); 2805#L22 call #t~ret7 := fibonacci(~n - 1);< 2806#fibonacciENTRY [2021-10-21 19:03:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:05,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2139327112, now seen corresponding path program 4 times [2021-10-21 19:03:05,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:05,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057269604] [2021-10-21 19:03:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:05,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-21 19:03:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:05,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:03:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:03:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-21 19:03:05,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:05,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057269604] [2021-10-21 19:03:05,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057269604] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:05,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246225111] [2021-10-21 19:03:05,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:03:05,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:05,664 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:03:05,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-21 19:03:05,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:03:05,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:03:05,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:03:05,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-21 19:03:06,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246225111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:06,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:03:06,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2021-10-21 19:03:06,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300275073] [2021-10-21 19:03:06,046 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:03:06,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:06,047 INFO L82 PathProgramCache]: Analyzing trace with hash 927646, now seen corresponding path program 2 times [2021-10-21 19:03:06,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:06,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66311303] [2021-10-21 19:03:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:06,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:06,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:03:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:06,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:03:06,100 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:03:06,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:03:06,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:03:06,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:03:06,101 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:03:06,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:03:06,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:03:06,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration5_Loop [2021-10-21 19:03:06,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:03:06,102 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:03:06,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,148 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:03:06,148 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:03:06,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,152 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:06,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:06,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 19:03:06,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:03:06,176 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:03:06,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,214 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 19:03:06,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:06,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:06,224 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:03:06,224 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret7=0} Honda state: {fibonacci_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:03:06,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,245 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:03:06,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:06,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:06,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:03:06,254 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:03:06,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,277 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 19:03:06,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:06,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:06,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:03:06,287 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret8=0} Honda state: {fibonacci_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:03:06,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-21 19:03:06,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,307 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 19:03:06,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:06,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:06,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,339 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 19:03:06,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:03:06,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:06,415 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:03:06,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,418 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:03:06,418 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:03:06,418 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:03:06,418 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:03:06,418 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:03:06,418 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:03:06,418 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:03:06,418 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration5_Loop [2021-10-21 19:03:06,418 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:03:06,418 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:03:06,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:06,466 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:03:06,466 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:03:06,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,468 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:06,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:06,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:06,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:06,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:06,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:06,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:06,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:06,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 19:03:06,506 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:06,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-21 19:03:06,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,526 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 19:03:06,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:06,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:06,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:06,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:06,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:06,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:06,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:06,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:06,547 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:06,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-21 19:03:06,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,566 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 19:03:06,568 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:06,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:06,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:06,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:06,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:06,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:06,576 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:06,576 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:06,577 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:06,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,599 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 19:03:06,601 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 [2021-10-21 19:03:06,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:06,608 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:06,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:06,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:06,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:06,609 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:06,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:06,610 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:06,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,629 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 19:03:06,634 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:06,641 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:06,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:06,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:06,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:06,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:06,642 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:06,642 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:06,648 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:03:06,650 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:03:06,650 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:03:06,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:06,652 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:06,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 19:03:06,652 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:03:06,653 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:03:06,653 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:03:06,653 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2021-10-21 19:03:06,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:06,675 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:03:06,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:06,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:03:06,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:07,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:07,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:03:07,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:07,496 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 19:03:07,496 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:07,561 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 240 states and 323 transitions. Complement of second has 13 states. [2021-10-21 19:03:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-21 19:03:07,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-21 19:03:07,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:07,563 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:03:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:07,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:03:07,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:08,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:03:08,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:08,214 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 19:03:08,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:08,266 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 240 states and 323 transitions. Complement of second has 13 states. [2021-10-21 19:03:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-21 19:03:08,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-21 19:03:08,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:08,268 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:03:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:08,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:03:08,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:08,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:03:08,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:09,006 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-21 19:03:09,006 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:09,075 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 218 states and 298 transitions. cyclomatic complexity: 84. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 291 states and 376 transitions. Complement of second has 14 states. [2021-10-21 19:03:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-10-21 19:03:09,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 51 letters. Loop has 4 letters. [2021-10-21 19:03:09,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:09,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 55 letters. Loop has 4 letters. [2021-10-21 19:03:09,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:09,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 51 letters. Loop has 8 letters. [2021-10-21 19:03:09,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:09,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 291 states and 376 transitions. [2021-10-21 19:03:09,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:03:09,088 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 291 states to 236 states and 319 transitions. [2021-10-21 19:03:09,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 108 [2021-10-21 19:03:09,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 111 [2021-10-21 19:03:09,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 236 states and 319 transitions. [2021-10-21 19:03:09,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:03:09,089 INFO L681 BuchiCegarLoop]: Abstraction has 236 states and 319 transitions. [2021-10-21 19:03:09,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states and 319 transitions. [2021-10-21 19:03:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-10-21 19:03:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 151 states have internal predecessors, (162), 48 states have call successors, (56), 29 states have call predecessors, (56), 36 states have return successors, (94), 49 states have call predecessors, (94), 46 states have call successors, (94) [2021-10-21 19:03:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 312 transitions. [2021-10-21 19:03:09,105 INFO L704 BuchiCegarLoop]: Abstraction has 230 states and 312 transitions. [2021-10-21 19:03:09,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:03:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:03:09,106 INFO L87 Difference]: Start difference. First operand 230 states and 312 transitions. Second operand has 13 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-21 19:03:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:09,241 INFO L93 Difference]: Finished difference Result 415 states and 605 transitions. [2021-10-21 19:03:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:03:09,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 415 states and 605 transitions. [2021-10-21 19:03:09,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:03:09,257 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 415 states to 402 states and 587 transitions. [2021-10-21 19:03:09,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 214 [2021-10-21 19:03:09,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-10-21 19:03:09,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 587 transitions. [2021-10-21 19:03:09,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:03:09,258 INFO L681 BuchiCegarLoop]: Abstraction has 402 states and 587 transitions. [2021-10-21 19:03:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states and 587 transitions. [2021-10-21 19:03:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 292. [2021-10-21 19:03:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 64 states have call successors, (76), 37 states have call predecessors, (76), 46 states have return successors, (146), 69 states have call predecessors, (146), 62 states have call successors, (146) [2021-10-21 19:03:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 426 transitions. [2021-10-21 19:03:09,278 INFO L704 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:03:09,278 INFO L587 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:03:09,278 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:03:09,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 292 states and 426 transitions. [2021-10-21 19:03:09,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:03:09,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:03:09,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:03:09,283 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [13, 11, 9, 8, 7, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2021-10-21 19:03:09,283 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:03:09,284 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(14);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; 5109#L29 assume !(main_~x~0 > 46); 5110#L32 call main_#t~ret10 := fibonacci(main_~x~0);< 5115#fibonacciENTRY ~n := #in~n; 5148#L17 assume !(~n < 1); 5147#L19 assume !(1 == ~n); 5138#L22 call #t~ret7 := fibonacci(~n - 1);< 5146#fibonacciENTRY ~n := #in~n; 5232#L17 assume !(~n < 1); 5231#L19 assume !(1 == ~n); 5140#L22 call #t~ret7 := fibonacci(~n - 1);< 5142#fibonacciENTRY ~n := #in~n; 5267#L17 assume !(~n < 1); 5149#L19 assume !(1 == ~n); 5139#L22 call #t~ret7 := fibonacci(~n - 1);< 5142#fibonacciENTRY ~n := #in~n; 5267#L17 assume !(~n < 1); 5149#L19 assume !(1 == ~n); 5139#L22 call #t~ret7 := fibonacci(~n - 1);< 5142#fibonacciENTRY ~n := #in~n; 5266#L17 assume !(~n < 1); 5265#L19 assume 1 == ~n;#res := 1; 5263#fibonacciFINAL assume true; 5260#fibonacciEXIT >#34#return; 5257#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5258#fibonacciENTRY ~n := #in~n; 5264#L17 assume ~n < 1;#res := 0; 5262#fibonacciFINAL assume true; 5256#fibonacciEXIT >#36#return; 5238#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5234#fibonacciFINAL assume true; 5230#fibonacciEXIT >#34#return; 5183#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5186#fibonacciENTRY ~n := #in~n; 5217#L17 assume !(~n < 1); 5214#L19 assume 1 == ~n;#res := 1; 5121#fibonacciFINAL assume true; 5182#fibonacciEXIT >#36#return; 5172#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5170#fibonacciFINAL assume true; 5165#fibonacciEXIT >#34#return; 5163#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5167#fibonacciENTRY ~n := #in~n; 5216#L17 assume !(~n < 1); 5215#L19 assume !(1 == ~n); 5210#L22 call #t~ret7 := fibonacci(~n - 1);< 5211#fibonacciENTRY ~n := #in~n; 5301#L17 assume !(~n < 1); 5213#L19 assume 1 == ~n;#res := 1; 5212#fibonacciFINAL assume true; 5209#fibonacciEXIT >#34#return; 5176#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5181#fibonacciENTRY ~n := #in~n; 5208#L17 assume ~n < 1;#res := 0; 5207#fibonacciFINAL assume true; 5173#fibonacciEXIT >#36#return; 5179#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5168#fibonacciFINAL assume true; 5162#fibonacciEXIT >#36#return; 5141#L22-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5144#fibonacciFINAL assume true; 5137#fibonacciEXIT >#34#return; 5119#L22-1 call #t~ret8 := fibonacci(~n - 2);< 5131#fibonacciENTRY ~n := #in~n; 5132#L17 assume !(~n < 1); 5118#L19 assume !(1 == ~n); 5096#L22 call #t~ret7 := fibonacci(~n - 1);< 5306#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); 5340#L19 assume !(1 == ~n); 5086#L22 [2021-10-21 19:03:09,284 INFO L793 eck$LassoCheckResult]: Loop: 5086#L22 call #t~ret7 := fibonacci(~n - 1);< 5085#fibonacciENTRY ~n := #in~n; 5089#L17 assume !(~n < 1); 5340#L19 assume !(1 == ~n); 5086#L22 [2021-10-21 19:03:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:09,284 INFO L82 PathProgramCache]: Analyzing trace with hash -652780395, now seen corresponding path program 5 times [2021-10-21 19:03:09,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:09,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458622128] [2021-10-21 19:03:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:09,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-21 19:03:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:03:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:03:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-21 19:03:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:03:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:03:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 103 proven. 115 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-21 19:03:09,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:03:09,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458622128] [2021-10-21 19:03:09,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458622128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:09,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439699142] [2021-10-21 19:03:09,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:03:09,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:03:09,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:09,504 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:03:09,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-21 19:03:09,945 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-21 19:03:09,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:03:09,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:03:09,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 108 proven. 109 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-21 19:03:10,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439699142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:03:10,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:03:10,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 16 [2021-10-21 19:03:10,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734844728] [2021-10-21 19:03:10,186 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:03:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:10,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1906756, now seen corresponding path program 3 times [2021-10-21 19:03:10,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:03:10,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979403678] [2021-10-21 19:03:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:03:10,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:03:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:10,195 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:03:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:03:10,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:03:10,251 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:03:10,251 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:03:10,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:03:10,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:03:10,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:03:10,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:10,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:03:10,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:03:10,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration6_Loop [2021-10-21 19:03:10,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:03:10,252 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:03:10,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:10,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:10,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:10,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:10,307 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:03:10,307 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:03:10,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:10,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:10,310 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:10,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:10,316 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:10,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 19:03:10,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:03:10,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:03:10,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:10,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:10,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:10,372 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:10,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:03:10,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:10,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 19:03:10,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:10,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:10,440 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:10,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:03:10,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:03:10,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-21 19:03:16,329 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:03:16,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-21 19:03:16,335 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:03:16,335 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:03:16,335 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:03:16,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:03:16,335 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:03:16,335 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:16,335 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:03:16,335 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:03:16,335 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration6_Loop [2021-10-21 19:03:16,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:03:16,335 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:03:16,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:16,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:16,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:16,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:03:16,404 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:03:16,404 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:03:16,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:16,405 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:16,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:16,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:16,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:16,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:16,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:16,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:16,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:16,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:16,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 19:03:16,447 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:16,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-10-21 19:03:16,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:16,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:16,480 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:16,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:16,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:16,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:16,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:16,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:16,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:16,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:16,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 19:03:16,503 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:16,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:16,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:16,541 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:16,543 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:16,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:16,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:16,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:16,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:16,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:16,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:16,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:16,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 19:03:16,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:03:16,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:16,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:16,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:16,588 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:16,592 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:03:16,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:03:16,602 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:03:16,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:03:16,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:03:16,602 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:03:16,603 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:03:16,603 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:03:16,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 19:03:16,619 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:03:16,623 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:03:16,623 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:03:16,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:03:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:03:16,625 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:03:16,626 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:03:16,626 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:03:16,627 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:03:16,627 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2021-10-21 19:03:16,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 19:03:16,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:16,660 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:03:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:16,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:03:16,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:16,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:17,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:03:17,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:17,775 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-21 19:03:17,775 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:17,837 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 301 states and 436 transitions. Complement of second has 18 states. [2021-10-21 19:03:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2021-10-21 19:03:17,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 75 letters. Loop has 4 letters. [2021-10-21 19:03:17,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:17,839 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:03:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:17,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:03:17,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:18,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:03:18,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:18,996 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-21 19:03:18,996 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:19,073 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 307 states and 442 transitions. Complement of second has 17 states. [2021-10-21 19:03:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-10-21 19:03:19,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 75 letters. Loop has 4 letters. [2021-10-21 19:03:19,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:19,081 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:03:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:03:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:19,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:03:19,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:03:20,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:03:20,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:03:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:03:20,136 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2021-10-21 19:03:20,136 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:20,199 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 292 states and 426 transitions. cyclomatic complexity: 138. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 354 states and 504 transitions. Complement of second has 27 states. [2021-10-21 19:03:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:03:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:03:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2021-10-21 19:03:20,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 75 letters. Loop has 4 letters. [2021-10-21 19:03:20,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:20,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 79 letters. Loop has 4 letters. [2021-10-21 19:03:20,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:20,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 75 letters. Loop has 8 letters. [2021-10-21 19:03:20,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:03:20,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 354 states and 504 transitions. [2021-10-21 19:03:20,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:03:20,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 354 states to 292 states and 426 transitions. [2021-10-21 19:03:20,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 136 [2021-10-21 19:03:20,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2021-10-21 19:03:20,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 426 transitions. [2021-10-21 19:03:20,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:03:20,214 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:03:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 426 transitions. [2021-10-21 19:03:20,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-21 19:03:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 64 states have call successors, (76), 37 states have call predecessors, (76), 46 states have return successors, (146), 69 states have call predecessors, (146), 62 states have call successors, (146) [2021-10-21 19:03:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 426 transitions. [2021-10-21 19:03:20,228 INFO L704 BuchiCegarLoop]: Abstraction has 292 states and 426 transitions. [2021-10-21 19:03:20,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:03:20,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:03:20,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:03:20,229 INFO L87 Difference]: Start difference. First operand 292 states and 426 transitions. Second operand has 17 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2021-10-21 19:03:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:03:20,458 INFO L93 Difference]: Finished difference Result 417 states and 613 transitions. [2021-10-21 19:03:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:03:20,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 417 states and 613 transitions. [2021-10-21 19:03:20,467 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:03:20,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 417 states to 0 states and 0 transitions. [2021-10-21 19:03:20,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:03:20,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:03:20,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:03:20,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:03:20,468 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:03:20,468 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:03:20,468 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:03:20,468 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:03:20,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:03:20,468 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:03:20,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:03:20,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:03:20 BoogieIcfgContainer [2021-10-21 19:03:20,477 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:03:20,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:03:20,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:03:20,479 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:03:20,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:56" (3/4) ... [2021-10-21 19:03:20,482 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:03:20,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:03:20,484 INFO L168 Benchmark]: Toolchain (without parser) took 25070.62 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 73.0 MB in the beginning and 78.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:20,484 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 75.5 MB. Free memory was 49.4 MB in the beginning and 49.3 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:03:20,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.52 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 83.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:20,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:20,486 INFO L168 Benchmark]: Boogie Preprocessor took 17.52 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:03:20,486 INFO L168 Benchmark]: RCFGBuilder took 314.14 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 72.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:20,487 INFO L168 Benchmark]: BuchiAutomizer took 24468.15 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 72.2 MB in the beginning and 79.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:03:20,487 INFO L168 Benchmark]: Witness Printer took 3.91 ms. Allocated memory is still 146.8 MB. Free memory was 79.2 MB in the beginning and 78.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:03:20,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 75.5 MB. Free memory was 49.4 MB in the beginning and 49.3 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 226.52 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 83.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.52 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 314.14 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 72.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 24468.15 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 72.2 MB in the beginning and 79.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.91 ms. Allocated memory is still 146.8 MB. Free memory was 79.2 MB in the beginning and 78.1 MB in the end (delta: 1.0 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 24.4s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 14.2s. Construction of modules took 0.6s. Büchi inclusion checks took 9.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 138.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 248 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 292 states and ocurred in iteration 5. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 206 SDtfs, 489 SDslu, 268 SDs, 0 SdLazy, 808 SolverSat, 318 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 698.6ms 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: 82ms 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! [2021-10-21 19:03:20,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:20,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-21 19:03:20,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-21 19:03:21,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:03:21,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a38e0fd-79c0-48fb-a7b3-9feb24fdf512/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...