./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc --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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:51:19,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:51:19,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:51:19,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:51:19,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:51:19,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:51:19,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:51:19,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:51:19,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:51:19,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:51:19,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:51:19,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:51:19,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:51:19,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:51:19,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:51:19,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:51:19,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:51:19,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:51:19,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:51:19,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:51:19,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:51:19,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:51:19,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:51:19,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:51:19,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:51:19,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:51:19,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:51:19,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:51:19,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:51:19,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:51:19,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:51:19,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:51:19,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:51:19,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:51:19,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:51:19,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:51:19,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:51:19,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:51:19,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:51:19,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:51:19,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:51:19,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-02 20:51:19,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:51:19,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:51:19,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:51:19,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:51:19,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:51:19,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:51:19,582 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:51:19,582 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:51:19,582 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:51:19,583 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:51:19,584 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:51:19,584 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:51:19,584 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:51:19,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:51:19,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:51:19,585 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:51:19,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:51:19,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:51:19,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:51:19,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:51:19,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:51:19,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:51:19,586 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:51:19,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:51:19,587 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:51:19,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:51:19,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:51:19,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:51:19,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:51:19,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:51:19,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:51:19,589 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:51:19,589 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_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2022-11-02 20:51:19,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:51:19,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:51:19,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:51:19,896 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:51:19,897 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:51:19,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2022-11-02 20:51:19,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/data/6e4bf88df/3530484ee677483781d5c898fd2fd818/FLAG36d7f6ac3 [2022-11-02 20:51:20,389 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:51:20,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2022-11-02 20:51:20,398 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/data/6e4bf88df/3530484ee677483781d5c898fd2fd818/FLAG36d7f6ac3 [2022-11-02 20:51:20,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/data/6e4bf88df/3530484ee677483781d5c898fd2fd818 [2022-11-02 20:51:20,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:51:20,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:51:20,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:20,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:51:20,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:51:20,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:20" (1/1) ... [2022-11-02 20:51:20,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172afba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:20, skipping insertion in model container [2022-11-02 20:51:20,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:20" (1/1) ... [2022-11-02 20:51:20,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:51:20,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:51:21,119 WARN L230 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_7ff7f393-41c2-4f8f-b238-c4ace132d86f/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2022-11-02 20:51:21,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:21,132 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:51:21,151 WARN L230 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_7ff7f393-41c2-4f8f-b238-c4ace132d86f/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2022-11-02 20:51:21,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:21,171 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:51:21,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21 WrapperNode [2022-11-02 20:51:21,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:21,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:21,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:51:21,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:51:21,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,208 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-02 20:51:21,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:21,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:51:21,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:51:21,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:51:21,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:51:21,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:51:21,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:51:21,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:51:21,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (1/1) ... [2022-11-02 20:51:21,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:21,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:21,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:21,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:51:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:51:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:51:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-02 20:51:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-02 20:51:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-02 20:51:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-02 20:51:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:51:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:51:21,409 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:51:21,412 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:51:21,530 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:51:21,537 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:51:21,538 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:51:21,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:21 BoogieIcfgContainer [2022-11-02 20:51:21,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:51:21,541 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:51:21,541 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:51:21,545 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:51:21,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:51:21,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:51:20" (1/3) ... [2022-11-02 20:51:21,547 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5be7a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:51:21, skipping insertion in model container [2022-11-02 20:51:21,548 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:51:21,548 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:21" (2/3) ... [2022-11-02 20:51:21,548 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5be7a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:51:21, skipping insertion in model container [2022-11-02 20:51:21,548 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:51:21,548 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:21" (3/3) ... [2022-11-02 20:51:21,551 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2022-11-02 20:51:21,622 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:51:21,623 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:51:21,623 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:51:21,623 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:51:21,623 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:51:21,623 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:51:21,623 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:51:21,623 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:51:21,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:51:21,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:51:21,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:21,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:21,659 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:51:21,659 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:21,660 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:51:21,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:51:21,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:51:21,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:21,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:21,664 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:51:21,664 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:21,672 INFO L748 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-11-02 20:51:21,673 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-11-02 20:51:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-11-02 20:51:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:21,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096999337] [2022-11-02 20:51:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:21,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:21,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:21,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:21,877 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-11-02 20:51:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:21,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163655966] [2022-11-02 20:51:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:21,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:21,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:21,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-11-02 20:51:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:21,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194128890] [2022-11-02 20:51:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:21,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:21,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:21,934 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:22,189 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:22,190 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:22,190 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:22,190 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:22,190 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:51:22,190 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,191 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:22,191 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:22,191 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2022-11-02 20:51:22,191 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:22,191 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:22,208 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,221 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,225 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,231 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,234 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,305 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:22,306 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:51:22,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 20:51:22,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:22,360 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:22,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:22,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 20:51:22,425 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:22,425 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:22,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-02 20:51:22,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 20:51:22,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,480 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:22,480 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:22,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:22,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 20:51:22,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,557 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:22,558 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:22,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-11-02 20:51:22,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 20:51:22,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:22,634 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:22,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:22,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 20:51:22,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:22,699 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:22,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:22,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 20:51:22,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,760 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:22,760 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:22,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-02 20:51:22,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 20:51:22,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:22,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:22,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 20:51:22,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:51:22,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:22,918 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:51:22,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:22,921 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:22,922 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:22,922 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:22,922 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:22,922 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:51:22,922 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:22,922 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:22,922 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:22,923 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2022-11-02 20:51:22,923 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:22,923 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:22,925 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,933 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,938 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,942 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,949 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,956 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:22,973 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:23,022 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:23,027 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:51:23,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:23,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:23,030 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,037 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:23,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 20:51:23,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:23,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:23,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:23,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:23,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:23,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:23,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:23,067 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:23,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:23,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:23,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:23,113 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:23,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:23,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:23,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:23,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:23,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:23,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:23,140 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:23,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 20:51:23,154 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:23,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:23,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:23,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 20:51:23,191 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:23,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:23,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:23,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:23,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:23,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:23,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:23,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:23,206 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:23,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:23,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:23,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:23,228 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:23,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 20:51:23,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:23,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:23,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:23,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:23,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:23,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:23,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:23,257 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:23,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:23,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:23,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:23,280 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 20:51:23,286 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:23,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:23,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:23,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:23,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:23,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:23,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:23,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:23,306 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:23,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:23,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:23,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:23,337 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-02 20:51:23,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:23,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:23,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:23,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:23,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:23,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:23,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:23,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:23,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:51:23,371 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:51:23,371 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:51:23,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:23,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:23,374 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-02 20:51:23,377 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:51:23,377 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:51:23,377 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:51:23,378 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-11-02 20:51:23,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:23,404 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:51:23,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:23,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:51:23,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:23,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:51:23,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:23,671 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-02 20:51:23,674 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:23,915 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-11-02 20:51:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:51:23,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-11-02 20:51:23,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-02 20:51:23,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:23,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-02 20:51:23,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:23,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-11-02 20:51:23,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:23,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-11-02 20:51:23,950 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:51:23,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-11-02 20:51:23,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-02 20:51:23,958 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-11-02 20:51:23,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-11-02 20:51:23,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:23,960 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-02 20:51:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-11-02 20:51:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-11-02 20:51:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-02 20:51:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-02 20:51:23,991 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-02 20:51:23,992 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-02 20:51:23,992 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:51:23,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-11-02 20:51:23,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:51:23,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:23,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:23,995 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:23,995 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:23,996 INFO L748 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-11-02 20:51:23,996 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-11-02 20:51:23,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:23,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-11-02 20:51:23,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:23,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107370175] [2022-11-02 20:51:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:23,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:51:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:51:24,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:24,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107370175] [2022-11-02 20:51:24,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107370175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:24,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:24,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:51:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485158141] [2022-11-02 20:51:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:24,201 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:51:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-11-02 20:51:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:24,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913404262] [2022-11-02 20:51:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:51:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:24,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913404262] [2022-11-02 20:51:24,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913404262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:24,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:24,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:51:24,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106934494] [2022-11-02 20:51:24,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:24,348 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:51:24,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:24,353 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:51:24,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:24,474 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-11-02 20:51:24,475 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-11-02 20:51:24,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:51:24,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-11-02 20:51:24,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-11-02 20:51:24,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-02 20:51:24,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-11-02 20:51:24,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:24,496 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-11-02 20:51:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-11-02 20:51:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-02 20:51:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-02 20:51:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-02 20:51:24,511 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-02 20:51:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:51:24,512 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-02 20:51:24,513 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:51:24,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-11-02 20:51:24,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:51:24,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:24,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:24,518 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:24,518 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:24,518 INFO L748 eck$LassoCheckResult]: Stem: 340#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 341#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-11-02 20:51:24,519 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-11-02 20:51:24,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-11-02 20:51:24,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:24,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018212145] [2022-11-02 20:51:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:51:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:24,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:24,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018212145] [2022-11-02 20:51:24,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018212145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:24,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506498182] [2022-11-02 20:51:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:24,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:24,693 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:24,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:51:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:24,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:51:24,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:24,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:24,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506498182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:24,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:24,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-02 20:51:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725499838] [2022-11-02 20:51:24,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:24,949 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:51:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-11-02 20:51:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:24,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8325535] [2022-11-02 20:51:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:24,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:24,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:25,237 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:25,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:25,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:25,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:25,237 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:51:25,238 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:25,238 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:25,238 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:25,238 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2022-11-02 20:51:25,238 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:25,238 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:25,240 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,243 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,245 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,247 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,250 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,257 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,259 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,262 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:25,311 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:25,311 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:51:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:25,313 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:25,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:25,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:25,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-02 20:51:25,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:25,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:25,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:25,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:25,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:25,400 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:25,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:25,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:25,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-02 20:51:25,459 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:25,459 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:25,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:25,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:25,491 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:25,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-02 20:51:25,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:25,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:25,510 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:25,510 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:25,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:25,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:25,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:25,537 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:25,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-02 20:51:25,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:25,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:25,557 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:25,557 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:25,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:25,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:25,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:25,581 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:25,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-02 20:51:25,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:25,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:25,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-11-02 20:51:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:25,622 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:25,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-02 20:51:25,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:51:25,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:26,804 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:51:26,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:26,808 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:26,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:26,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:26,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:26,808 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:51:26,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:26,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:26,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:26,809 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2022-11-02 20:51:26,809 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:26,809 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:26,810 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,820 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,823 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,826 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,834 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,837 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,839 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,843 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:26,908 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:26,908 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:51:26,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:26,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:26,911 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:26,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:26,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-02 20:51:26,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:26,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:26,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:26,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:26,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:26,927 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:26,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:26,942 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:26,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:26,983 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:27,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:27,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-02 20:51:27,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:27,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:27,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:27,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:27,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:27,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:27,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:27,046 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:27,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-02 20:51:27,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:27,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:27,067 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:27,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-02 20:51:27,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:27,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:27,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:27,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:27,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:27,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:27,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:27,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:27,088 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:27,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:27,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:27,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:27,109 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:27,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-02 20:51:27,112 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:27,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:27,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:27,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:27,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:27,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:27,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:27,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:27,163 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:51:27,168 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:51:27,168 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:51:27,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:27,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:27,172 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:27,179 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:51:27,180 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:51:27,180 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:51:27,180 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-11-02 20:51:27,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-02 20:51:27,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:27,220 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:51:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:27,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:51:27,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:27,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:51:27,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:27,581 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-02 20:51:27,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:51:28,085 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-11-02 20:51:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-11-02 20:51:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:51:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-11-02 20:51:28,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-02 20:51:28,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:28,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-11-02 20:51:28,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:28,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-11-02 20:51:28,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:28,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-11-02 20:51:28,099 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:51:28,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-11-02 20:51:28,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-11-02 20:51:28,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-11-02 20:51:28,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-11-02 20:51:28,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:28,119 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-11-02 20:51:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-11-02 20:51:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-11-02 20:51:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-11-02 20:51:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-02 20:51:28,147 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-02 20:51:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:28,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:51:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:51:28,150 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:51:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:28,432 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2022-11-02 20:51:28,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2022-11-02 20:51:28,457 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:51:28,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2022-11-02 20:51:28,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2022-11-02 20:51:28,469 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2022-11-02 20:51:28,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2022-11-02 20:51:28,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:28,472 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2022-11-02 20:51:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2022-11-02 20:51:28,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-11-02 20:51:28,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2022-11-02 20:51:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2022-11-02 20:51:28,502 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-02 20:51:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:51:28,503 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-02 20:51:28,503 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 20:51:28,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2022-11-02 20:51:28,507 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:51:28,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:28,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:28,517 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:51:28,517 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:51:28,518 INFO L748 eck$LassoCheckResult]: Stem: 1215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1243#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1289#fibo1ENTRY ~n := #in~n; 1323#L10 assume !(~n < 1); 1322#L12 assume !(1 == ~n); 1221#L15 call #t~ret4 := fibo2(~n - 1);< 1275#fibo2ENTRY ~n := #in~n; 1282#L20 assume !(~n < 1); 1220#L22 assume !(1 == ~n); 1222#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume !(~n < 1); 1310#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume ~n < 1;#res := 0; 1269#fibo2FINAL assume true; 1270#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1249#fibo2ENTRY ~n := #in~n; 1379#L20 assume !(~n < 1); 1378#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1315#L10 assume !(~n < 1); 1318#L12 assume 1 == ~n;#res := 1; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1225#L25-1 call #t~ret7 := fibo1(~n - 2);< 1235#fibo1ENTRY ~n := #in~n; 1308#L10 assume !(~n < 1); 1306#L12 assume !(1 == ~n); 1233#L15 call #t~ret4 := fibo2(~n - 1);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume ~n < 1;#res := 0; 1304#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1234#L15-1 call #t~ret5 := fibo2(~n - 2);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume !(~n < 1); 1298#L22 assume 1 == ~n;#res := 1; 1299#fibo2FINAL assume true; 1366#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-02 20:51:28,518 INFO L750 eck$LassoCheckResult]: Loop: 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-02 20:51:28,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:28,519 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2022-11-02 20:51:28,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:28,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639020211] [2022-11-02 20:51:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:51:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:51:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-02 20:51:29,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:29,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639020211] [2022-11-02 20:51:29,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639020211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:29,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257365231] [2022-11-02 20:51:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:29,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:29,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:29,063 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:29,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-02 20:51:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:51:29,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-02 20:51:29,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 20:51:29,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257365231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:29,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:29,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2022-11-02 20:51:29,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279387823] [2022-11-02 20:51:29,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:29,939 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:51:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2022-11-02 20:51:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:29,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279642807] [2022-11-02 20:51:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:51:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:51:30,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:30,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279642807] [2022-11-02 20:51:30,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279642807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:30,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532947457] [2022-11-02 20:51:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:30,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:30,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:30,135 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:30,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-02 20:51:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:30,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:51:30,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:51:30,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:51:30,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532947457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:30,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:30,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2022-11-02 20:51:30,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070041714] [2022-11-02 20:51:30,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:30,625 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:51:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:51:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:51:30,626 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-02 20:51:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:30,901 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2022-11-02 20:51:30,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2022-11-02 20:51:30,904 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:51:30,908 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2022-11-02 20:51:30,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2022-11-02 20:51:30,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2022-11-02 20:51:30,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2022-11-02 20:51:30,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:30,909 INFO L218 hiAutomatonCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-11-02 20:51:30,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2022-11-02 20:51:30,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2022-11-02 20:51:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 128 states have internal predecessors, (139), 40 states have call successors, (41), 25 states have call predecessors, (41), 31 states have return successors, (64), 35 states have call predecessors, (64), 37 states have call successors, (64) [2022-11-02 20:51:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2022-11-02 20:51:30,937 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-02 20:51:30,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:51:30,940 INFO L428 stractBuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-02 20:51:30,941 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-02 20:51:30,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2022-11-02 20:51:30,943 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:51:30,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:30,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:30,950 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:30,950 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:51:30,951 INFO L748 eck$LassoCheckResult]: Stem: 2732#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2733#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2762#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2794#fibo1ENTRY ~n := #in~n; 2783#L10 assume !(~n < 1); 2778#L12 assume !(1 == ~n); 2738#L15 call #t~ret4 := fibo2(~n - 1);< 2786#fibo2ENTRY ~n := #in~n; 2788#L20 assume !(~n < 1); 2737#L22 assume !(1 == ~n); 2739#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2805#L10 assume !(~n < 1); 2804#L12 assume !(1 == ~n); 2750#L15 call #t~ret4 := fibo2(~n - 1);< 2799#fibo2ENTRY ~n := #in~n; 2825#L20 assume !(~n < 1); 2824#L22 assume !(1 == ~n); 2769#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2835#L12 assume 1 == ~n;#res := 1; 2836#fibo1FINAL assume true; 2905#fibo1EXIT >#46#return; 2748#L25-1 call #t~ret7 := fibo1(~n - 2);< 2751#fibo1ENTRY ~n := #in~n; 2911#L10 assume ~n < 1;#res := 0; 2909#fibo1FINAL assume true; 2907#fibo1EXIT >#48#return; 2771#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2772#fibo2FINAL assume true; 2779#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-02 20:51:30,954 INFO L750 eck$LassoCheckResult]: Loop: 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#46#return; 2854#L25-1 call #t~ret7 := fibo1(~n - 2);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#48#return; 2876#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2875#fibo2FINAL assume true; 2850#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-02 20:51:30,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:30,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-11-02 20:51:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:30,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878863734] [2022-11-02 20:51:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:30,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:30,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2022-11-02 20:51:30,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:30,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108602494] [2022-11-02 20:51:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:51:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:51:31,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:31,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108602494] [2022-11-02 20:51:31,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108602494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:31,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504237667] [2022-11-02 20:51:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:31,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:31,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:31,258 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:31,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-02 20:51:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:31,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:51:31,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:51:31,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:51:31,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504237667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:31,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:31,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-02 20:51:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740693354] [2022-11-02 20:51:31,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:31,928 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:51:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:31,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:51:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:51:31,929 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. cyclomatic complexity: 60 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:51:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:32,275 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2022-11-02 20:51:32,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2022-11-02 20:51:32,277 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-02 20:51:32,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2022-11-02 20:51:32,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-11-02 20:51:32,281 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2022-11-02 20:51:32,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-11-02 20:51:32,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:32,282 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-11-02 20:51:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-11-02 20:51:32,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-11-02 20:51:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 69 states have internal predecessors, (75), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-02 20:51:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2022-11-02 20:51:32,291 INFO L240 hiAutomatonCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-02 20:51:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:51:32,292 INFO L428 stractBuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-02 20:51:32,292 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-02 20:51:32,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2022-11-02 20:51:32,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-02 20:51:32,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:32,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:32,295 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:32,295 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:32,296 INFO L748 eck$LassoCheckResult]: Stem: 3486#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3487#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3509#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3536#fibo1ENTRY ~n := #in~n; 3524#L10 assume !(~n < 1); 3525#L12 assume !(1 == ~n); 3510#L15 call #t~ret4 := fibo2(~n - 1);< 3570#fibo2ENTRY ~n := #in~n; 3531#L20 assume !(~n < 1); 3532#L22 assume !(1 == ~n); 3495#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3506#L10 assume !(~n < 1); 3519#L12 assume !(1 == ~n); 3492#L15 call #t~ret4 := fibo2(~n - 1);< 3527#fibo2ENTRY ~n := #in~n; 3535#L20 assume !(~n < 1); 3491#L22 assume !(1 == ~n); 3493#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3539#L12 assume 1 == ~n;#res := 1; 3494#fibo1FINAL assume true; 3496#fibo1EXIT >#46#return; 3508#L25-1 call #t~ret7 := fibo1(~n - 2);< 3579#fibo1ENTRY ~n := #in~n; 3584#L10 assume ~n < 1;#res := 0; 3581#fibo1FINAL assume true; 3577#fibo1EXIT >#48#return; 3574#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3573#fibo2FINAL assume true; 3571#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-02 20:51:32,296 INFO L750 eck$LassoCheckResult]: Loop: 3514#L15-1 call #t~ret5 := fibo2(~n - 2);< 3545#fibo2ENTRY ~n := #in~n; 3568#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume !(1 == ~n); 3513#L15 call #t~ret4 := fibo2(~n - 1);< 3526#fibo2ENTRY ~n := #in~n; 3534#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume 1 == ~n;#res := 1; 3518#fibo1FINAL assume true; 3586#fibo1EXIT >#46#return; 3522#L25-1 call #t~ret7 := fibo1(~n - 2);< 3548#fibo1ENTRY ~n := #in~n; 3521#L10 assume ~n < 1;#res := 0; 3523#fibo1FINAL assume true; 3580#fibo1EXIT >#48#return; 3512#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3515#fibo2FINAL assume true; 3520#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-02 20:51:32,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2022-11-02 20:51:32,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:32,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77344771] [2022-11-02 20:51:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:32,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:32,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:32,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2022-11-02 20:51:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:32,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930139623] [2022-11-02 20:51:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:32,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:32,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2022-11-02 20:51:32,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:32,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696967048] [2022-11-02 20:51:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:32,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:51:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:51:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:51:32,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:32,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696967048] [2022-11-02 20:51:32,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696967048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:32,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213068512] [2022-11-02 20:51:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:32,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:32,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:32,494 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:32,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-02 20:51:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:32,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:51:32,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:51:32,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:51:32,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213068512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:32,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:32,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2022-11-02 20:51:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955150961] [2022-11-02 20:51:32,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:33,161 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:33,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:33,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:33,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:33,162 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:51:33,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:33,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:33,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:33,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2022-11-02 20:51:33,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:33,163 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:33,164 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,167 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,178 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,181 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,184 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,186 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,189 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:33,268 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:33,268 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:51:33,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:33,274 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:33,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:33,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:33,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-02 20:51:33,306 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:33,306 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:33,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:33,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:33,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:33,348 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:33,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:33,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:33,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-02 20:51:33,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:33,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:33,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:33,394 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:33,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-02 20:51:33,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:51:33,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:34,782 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:51:34,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-02 20:51:34,787 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:34,787 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:34,787 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:34,787 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:34,787 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:51:34,787 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:34,787 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:34,788 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:34,788 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2022-11-02 20:51:34,788 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:34,788 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:34,789 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,797 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,808 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,811 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,814 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,816 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,819 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,821 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:34,903 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:34,905 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:51:34,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:34,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:34,911 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:34,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:34,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:34,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:34,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:34,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:34,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:34,927 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:34,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:34,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-02 20:51:34,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:34,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-02 20:51:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:34,969 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:34,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-02 20:51:34,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:34,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:34,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:34,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:34,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:34,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:34,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:34,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:34,988 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:51:34,992 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:51:34,992 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:51:34,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:34,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:34,996 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:34,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-02 20:51:34,998 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:51:34,999 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:51:34,999 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:51:34,999 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-02 20:51:35,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-11-02 20:51:35,022 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:51:35,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:35,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:51:35,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:35,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:51:35,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:35,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:51:35,607 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-11-02 20:51:35,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-02 20:51:36,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 335 states and 442 transitions. Complement of second has 46 states. [2022-11-02 20:51:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2022-11-02 20:51:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-02 20:51:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2022-11-02 20:51:36,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2022-11-02 20:51:36,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:36,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2022-11-02 20:51:36,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:36,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2022-11-02 20:51:36,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:36,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2022-11-02 20:51:36,088 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2022-11-02 20:51:36,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2022-11-02 20:51:36,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2022-11-02 20:51:36,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2022-11-02 20:51:36,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2022-11-02 20:51:36,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:36,094 INFO L218 hiAutomatonCegarLoop]: Abstraction has 292 states and 395 transitions. [2022-11-02 20:51:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2022-11-02 20:51:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2022-11-02 20:51:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 173 states have internal predecessors, (191), 55 states have call successors, (56), 36 states have call predecessors, (56), 45 states have return successors, (110), 56 states have call predecessors, (110), 52 states have call successors, (110) [2022-11-02 20:51:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2022-11-02 20:51:36,115 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 357 transitions. [2022-11-02 20:51:36,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:51:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:51:36,116 INFO L87 Difference]: Start difference. First operand 266 states and 357 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:51:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:36,316 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2022-11-02 20:51:36,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2022-11-02 20:51:36,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-02 20:51:36,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2022-11-02 20:51:36,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-02 20:51:36,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-02 20:51:36,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2022-11-02 20:51:36,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:36,322 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-11-02 20:51:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2022-11-02 20:51:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2022-11-02 20:51:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 80 states have internal predecessors, (86), 21 states have call successors, (21), 16 states have call predecessors, (21), 20 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) [2022-11-02 20:51:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2022-11-02 20:51:36,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-02 20:51:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:51:36,330 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-02 20:51:36,330 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-02 20:51:36,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2022-11-02 20:51:36,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-02 20:51:36,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:36,332 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:36,333 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:36,334 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:36,334 INFO L748 eck$LassoCheckResult]: Stem: 5001#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5002#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5029#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5053#fibo1ENTRY ~n := #in~n; 5054#L10 assume !(~n < 1); 5066#L12 assume !(1 == ~n); 5007#L15 call #t~ret4 := fibo2(~n - 1);< 5050#fibo2ENTRY ~n := #in~n; 5045#L20 assume !(~n < 1); 5006#L22 assume !(1 == ~n); 5008#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5026#L10 assume !(~n < 1); 5058#L12 assume 1 == ~n;#res := 1; 5064#fibo1FINAL assume true; 5113#fibo1EXIT >#46#return; 5017#L25-1 call #t~ret7 := fibo1(~n - 2);< 5019#fibo1ENTRY ~n := #in~n; 5115#L10 assume ~n < 1;#res := 0; 5114#fibo1FINAL assume true; 5027#fibo1EXIT >#48#return; 5028#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5033#fibo2FINAL assume true; 5046#fibo2EXIT >#50#return; 5004#L15-1 call #t~ret5 := fibo2(~n - 2);< 5032#fibo2ENTRY ~n := #in~n; 5044#L20 assume ~n < 1;#res := 0; 5005#fibo2FINAL assume true; 5037#fibo2EXIT >#52#return; 5076#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5074#fibo1FINAL assume true; 5071#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-02 20:51:36,334 INFO L750 eck$LassoCheckResult]: Loop: 5010#L25-1 call #t~ret7 := fibo1(~n - 2);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume 1 == ~n;#res := 1; 5009#fibo1FINAL assume true; 5016#fibo1EXIT >#46#return; 5039#L25-1 call #t~ret7 := fibo1(~n - 2);< 5116#fibo1ENTRY ~n := #in~n; 5038#L10 assume ~n < 1;#res := 0; 5040#fibo1FINAL assume true; 5095#fibo1EXIT >#48#return; 5094#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5092#fibo2FINAL assume true; 5089#fibo2EXIT >#50#return; 5082#L15-1 call #t~ret5 := fibo2(~n - 2);< 5087#fibo2ENTRY ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5091#fibo2FINAL assume true; 5080#fibo2EXIT >#52#return; 5083#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5079#fibo1FINAL assume true; 5072#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-02 20:51:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2022-11-02 20:51:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:36,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472315578] [2022-11-02 20:51:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:51:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:51:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:51:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472315578] [2022-11-02 20:51:36,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472315578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:36,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456829922] [2022-11-02 20:51:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:36,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:36,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:36,607 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:36,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-02 20:51:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:36,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:51:36,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:51:36,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:51:37,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456829922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:37,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:37,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-02 20:51:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935803867] [2022-11-02 20:51:37,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:37,107 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:51:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2022-11-02 20:51:37,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:37,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602464794] [2022-11-02 20:51:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:37,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:51:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:51:37,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:37,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602464794] [2022-11-02 20:51:37,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602464794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:37,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015129943] [2022-11-02 20:51:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:37,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:37,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:37,233 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:37,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-02 20:51:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:51:37,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:51:37,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:51:37,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015129943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:37,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:37,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-02 20:51:37,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099461428] [2022-11-02 20:51:37,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:37,637 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:51:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:51:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:51:37,638 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. cyclomatic complexity: 25 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-02 20:51:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:37,835 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2022-11-02 20:51:37,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2022-11-02 20:51:37,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-02 20:51:37,839 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2022-11-02 20:51:37,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-02 20:51:37,839 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-02 20:51:37,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2022-11-02 20:51:37,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:37,840 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2022-11-02 20:51:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2022-11-02 20:51:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-11-02 20:51:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 81 states have internal predecessors, (87), 21 states have call successors, (21), 17 states have call predecessors, (21), 20 states have return successors, (33), 21 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-02 20:51:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2022-11-02 20:51:37,846 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-02 20:51:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:51:37,847 INFO L428 stractBuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-02 20:51:37,847 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-02 20:51:37,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2022-11-02 20:51:37,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-02 20:51:37,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:37,849 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:37,851 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:37,851 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:51:37,851 INFO L748 eck$LassoCheckResult]: Stem: 5911#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5912#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5933#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5956#fibo1ENTRY ~n := #in~n; 5948#L10 assume !(~n < 1); 5942#L12 assume !(1 == ~n); 5917#L15 call #t~ret4 := fibo2(~n - 1);< 5955#fibo2ENTRY ~n := #in~n; 5953#L20 assume !(~n < 1); 5916#L22 assume !(1 == ~n); 5918#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5930#L10 assume !(~n < 1); 5965#L12 assume 1 == ~n;#res := 1; 5969#fibo1FINAL assume true; 5931#fibo1EXIT >#46#return; 5932#L25-1 call #t~ret7 := fibo1(~n - 2);< 6019#fibo1ENTRY ~n := #in~n; 6024#L10 assume ~n < 1;#res := 0; 6022#fibo1FINAL assume true; 6018#fibo1EXIT >#48#return; 6016#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6015#fibo2FINAL assume true; 6014#fibo2EXIT >#50#return; 5914#L15-1 call #t~ret5 := fibo2(~n - 2);< 5940#fibo2ENTRY ~n := #in~n; 5952#L20 assume !(~n < 1); 5913#L22 assume 1 == ~n;#res := 1; 5915#fibo2FINAL assume true; 6025#fibo2EXIT >#52#return; 5957#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5958#fibo1FINAL assume true; 5977#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-02 20:51:37,852 INFO L750 eck$LassoCheckResult]: Loop: 5961#L25-1 call #t~ret7 := fibo1(~n - 2);< 5921#fibo1ENTRY ~n := #in~n; 6028#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume 1 == ~n;#res := 1; 5943#fibo2FINAL assume true; 5944#fibo2EXIT >#50#return; 5954#L15-1 call #t~ret5 := fibo2(~n - 2);< 5992#fibo2ENTRY ~n := #in~n; 5997#L20 assume ~n < 1;#res := 0; 5995#fibo2FINAL assume true; 5991#fibo2EXIT >#52#return; 5990#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5979#fibo1FINAL assume true; 5975#fibo1EXIT >#46#return; 5976#L25-1 call #t~ret7 := fibo1(~n - 2);< 6027#fibo1ENTRY ~n := #in~n; 6029#L10 assume ~n < 1;#res := 0; 5947#fibo1FINAL assume true; 6003#fibo1EXIT >#48#return; 6001#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6000#fibo2FINAL assume true; 5986#fibo2EXIT >#50#return; 5983#L15-1 call #t~ret5 := fibo2(~n - 2);< 5984#fibo2ENTRY ~n := #in~n; 5996#L20 assume !(~n < 1); 5994#L22 assume 1 == ~n;#res := 1; 5993#fibo2FINAL assume true; 5982#fibo2EXIT >#52#return; 5981#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5980#fibo1FINAL assume true; 5978#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-02 20:51:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2022-11-02 20:51:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:37,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320305262] [2022-11-02 20:51:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:37,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:51:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:51:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:51:38,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:38,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320305262] [2022-11-02 20:51:38,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320305262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:38,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860807495] [2022-11-02 20:51:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:38,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:38,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:38,090 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:38,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-02 20:51:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:51:38,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:51:38,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:51:38,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860807495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:38,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:38,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-02 20:51:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645731345] [2022-11-02 20:51:38,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:38,522 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:51:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2022-11-02 20:51:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:38,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285550092] [2022-11-02 20:51:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:51:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:51:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:51:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 20:51:38,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285550092] [2022-11-02 20:51:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285550092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:38,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326776328] [2022-11-02 20:51:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:38,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:38,708 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:38,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-02 20:51:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:38,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:51:38,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:51:38,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:51:39,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326776328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:39,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:39,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-02 20:51:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036442260] [2022-11-02 20:51:39,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:39,251 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:51:39,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:39,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:51:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:51:39,253 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. cyclomatic complexity: 23 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-02 20:51:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:39,673 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-11-02 20:51:39,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2022-11-02 20:51:39,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-02 20:51:39,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2022-11-02 20:51:39,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-11-02 20:51:39,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-11-02 20:51:39,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2022-11-02 20:51:39,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:51:39,676 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-02 20:51:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2022-11-02 20:51:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-02 20:51:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-02 20:51:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-11-02 20:51:39,679 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-02 20:51:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:51:39,680 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-02 20:51:39,680 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-02 20:51:39,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2022-11-02 20:51:39,681 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-02 20:51:39,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:51:39,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:51:39,682 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:39,682 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:39,682 INFO L748 eck$LassoCheckResult]: Stem: 6951#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6952#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6972#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6996#fibo1ENTRY ~n := #in~n; 6985#L10 assume !(~n < 1); 6982#L12 assume !(1 == ~n); 6957#L15 call #t~ret4 := fibo2(~n - 1);< 6988#fibo2ENTRY ~n := #in~n; 6992#L20 assume !(~n < 1); 6956#L22 assume !(1 == ~n); 6958#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6969#L10 assume !(~n < 1); 7017#L12 assume !(1 == ~n); 6975#L15 call #t~ret4 := fibo2(~n - 1);< 7015#fibo2ENTRY ~n := #in~n; 7011#L20 assume !(~n < 1); 7009#L22 assume !(1 == ~n); 6968#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6970#L10 assume !(~n < 1); 6980#L12 assume 1 == ~n;#res := 1; 6981#fibo1FINAL assume true; 7025#fibo1EXIT >#46#return; 7022#L25-1 call #t~ret7 := fibo1(~n - 2);< 7023#fibo1ENTRY ~n := #in~n; 7028#L10 assume ~n < 1;#res := 0; 7027#fibo1FINAL assume true; 7021#fibo1EXIT >#48#return; 7019#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7018#fibo2FINAL assume true; 7016#fibo2EXIT >#50#return; 7013#L15-1 call #t~ret5 := fibo2(~n - 2);< 7014#fibo2ENTRY ~n := #in~n; 7026#L20 assume !(~n < 1); 7024#L22 assume 1 == ~n;#res := 1; 7020#fibo2FINAL assume true; 7012#fibo2EXIT >#52#return; 7010#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7008#fibo1FINAL assume true; 7006#fibo1EXIT >#46#return; 6960#L25-1 call #t~ret7 := fibo1(~n - 2);< 7002#fibo1ENTRY ~n := #in~n; 7039#L10 assume !(~n < 1); 6997#L12 [2022-11-02 20:51:39,682 INFO L750 eck$LassoCheckResult]: Loop: 6997#L12 assume !(1 == ~n); 6964#L15 call #t~ret4 := fibo2(~n - 1);< 6987#fibo2ENTRY ~n := #in~n; 7004#L20 assume !(~n < 1); 7000#L22 assume !(1 == ~n); 6973#L25 call #t~ret6 := fibo1(~n - 1);< 6974#fibo1ENTRY ~n := #in~n; 6999#L10 assume !(~n < 1); 6997#L12 [2022-11-02 20:51:39,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2022-11-02 20:51:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:39,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682890905] [2022-11-02 20:51:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:39,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:39,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2022-11-02 20:51:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:39,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087672894] [2022-11-02 20:51:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:39,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:39,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:39,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:39,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2022-11-02 20:51:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:39,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351163447] [2022-11-02 20:51:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:51:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:51:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:39,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:51:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:51:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:51:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:39,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351163447] [2022-11-02 20:51:39,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351163447] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:39,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106855918] [2022-11-02 20:51:39,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:51:39,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:39,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:39,846 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:39,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-02 20:51:39,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:51:39,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:39,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:51:39,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:51:39,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:51:40,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106855918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:40,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:40,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-11-02 20:51:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643619978] [2022-11-02 20:51:40,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:40,247 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:40,247 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:40,247 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:40,247 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:40,247 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:51:40,247 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:40,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:40,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:40,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2022-11-02 20:51:40,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:40,248 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:40,249 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,252 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,275 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,277 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,280 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,288 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,290 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,292 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:40,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:40,336 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:51:40,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:40,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:40,339 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:40,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:40,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:40,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-02 20:51:40,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:40,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:40,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:40,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:40,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:40,418 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:40,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:40,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:40,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-02 20:51:40,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:40,448 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:40,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:40,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:40,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:40,486 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:40,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:40,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:40,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-02 20:51:40,519 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:40,519 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:40,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:40,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:40,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:40,560 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:40,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:40,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:40,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-02 20:51:40,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:51:40,591 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:51:40,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:40,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:40,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:40,633 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:40,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:51:40,636 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:40,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-02 20:51:40,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2022-11-02 20:51:40,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:40,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:40,705 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:40,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-02 20:51:40,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:51:40,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:51:41,701 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:51:41,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:41,705 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:51:41,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:51:41,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:51:41,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:51:41,706 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:51:41,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:41,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:51:41,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:51:41,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2022-11-02 20:51:41,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:51:41,706 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:51:41,707 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,716 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,718 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,721 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,734 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:51:41,805 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:51:41,805 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:51:41,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:41,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:41,807 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:41,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:41,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-02 20:51:41,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:41,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:41,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:41,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:41,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:41,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:41,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:41,842 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:41,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2022-11-02 20:51:41,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:41,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:41,872 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:41,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:41,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-02 20:51:41,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:41,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:41,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:41,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:41,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:41,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:41,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:41,902 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:41,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:41,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:41,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:41,939 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:41,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:41,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:41,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:41,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:41,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:41,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:41,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-02 20:51:41,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:41,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:41,974 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:42,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:42,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:42,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:42,011 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:42,014 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:42,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-02 20:51:42,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:42,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:42,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:42,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:42,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:42,028 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:42,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:42,042 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:51:42,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:42,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:42,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:42,079 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:42,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:51:42,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:51:42,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:51:42,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:51:42,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:51:42,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:51:42,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-02 20:51:42,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:51:42,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:51:42,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:51:42,116 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 20:51:42,116 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 20:51:42,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:51:42,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:42,119 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:42,121 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:51:42,122 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:51:42,122 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:51:42,122 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-02 20:51:42,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-02 20:51:42,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-11-02 20:51:42,145 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:51:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:42,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:51:42,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:42,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:51:42,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:42,618 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:51:42,618 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:51:42,723 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-02 20:51:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:51:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:51:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-02 20:51:42,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 20:51:42,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:42,725 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:51:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:42,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:51:42,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:42,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:43,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:51:43,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:43,225 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:51:43,225 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:51:43,320 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-02 20:51:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:51:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:51:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-02 20:51:43,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 20:51:43,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:43,322 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:51:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:43,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:51:43,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:43,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:51:43,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:43,770 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:51:43,770 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:51:43,919 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2022-11-02 20:51:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:51:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:51:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-11-02 20:51:43,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 20:51:43,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:43,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2022-11-02 20:51:43,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:43,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2022-11-02 20:51:43,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:51:43,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2022-11-02 20:51:43,926 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:51:43,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-11-02 20:51:43,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 20:51:43,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 20:51:43,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 20:51:43,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:43,927 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:51:43,927 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:51:43,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:43,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:51:43,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:51:43,928 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:51:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:43,928 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-02 20:51:43,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-02 20:51:43,929 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:51:43,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:51:43,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 20:51:43,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 20:51:43,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 20:51:43,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:43,930 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:51:43,930 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:51:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:51:43,930 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:51:43,931 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-02 20:51:43,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:51:43,931 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:51:43,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-02 20:51:43,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:51:43 BoogieIcfgContainer [2022-11-02 20:51:43,939 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:51:43,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:51:43,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:51:43,940 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:51:43,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:21" (3/4) ... [2022-11-02 20:51:43,943 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:51:43,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:51:43,944 INFO L158 Benchmark]: Toolchain (without parser) took 23119.57ms. Allocated memory was 102.8MB in the beginning and 188.7MB in the end (delta: 86.0MB). Free memory was 62.2MB in the beginning and 139.3MB in the end (delta: -77.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-11-02 20:51:43,944 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:43,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.14ms. Allocated memory is still 102.8MB. Free memory was 62.0MB in the beginning and 78.1MB in the end (delta: -16.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:51:43,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.98ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:51:43,945 INFO L158 Benchmark]: Boogie Preprocessor took 37.31ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 75.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:51:43,946 INFO L158 Benchmark]: RCFGBuilder took 292.58ms. Allocated memory is still 102.8MB. Free memory was 75.5MB in the beginning and 66.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:51:43,946 INFO L158 Benchmark]: BuchiAutomizer took 22397.89ms. Allocated memory was 102.8MB in the beginning and 188.7MB in the end (delta: 86.0MB). Free memory was 66.3MB in the beginning and 139.3MB in the end (delta: -73.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-02 20:51:43,946 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 188.7MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:43,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.14ms. Allocated memory is still 102.8MB. Free memory was 62.0MB in the beginning and 78.1MB in the end (delta: -16.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.98ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.31ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 75.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 292.58ms. Allocated memory is still 102.8MB. Free memory was 75.5MB in the beginning and 66.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 22397.89ms. Allocated memory was 102.8MB in the beginning and 188.7MB in the end (delta: 86.0MB). Free memory was 66.3MB in the beginning and 139.3MB in the end (delta: -73.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 188.7MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.3s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 15.7s. Construction of modules took 1.6s. Büchi inclusion checks took 4.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 96 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 590 mSDsluCounter, 878 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 635 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2166 IncrementalHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 243 mSDtfsCounter, 2166 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf93 smp78 dnf100 smp100 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-02 20:51:43,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:44,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-11-02 20:51:44,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-02 20:51:44,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-11-02 20:51:44,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-11-02 20:51:45,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-11-02 20:51:45,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-02 20:51:45,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-02 20:51:45,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-02 20:51:45,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-02 20:51:46,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff7f393-41c2-4f8f-b238-c4ace132d86f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE