./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/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_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa --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 --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:53:09,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:53:09,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:53:09,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:53:09,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:53:09,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:53:09,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:53:09,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:53:09,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:53:09,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:53:09,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:53:09,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:53:09,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:53:09,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:53:09,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:53:09,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:53:09,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:53:09,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:53:09,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:53:09,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:53:09,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:53:09,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:53:09,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:53:09,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:53:09,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:53:09,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:53:09,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:53:09,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:53:09,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:53:09,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:53:09,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:53:09,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:53:09,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:53:09,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:53:09,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:53:09,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:53:09,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:53:09,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:53:09,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:53:09,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:53:09,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:53:09,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-06 23:53:09,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:53:09,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:53:09,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:53:09,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:53:09,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:53:09,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:53:09,279 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:53:09,279 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 23:53:09,279 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 23:53:09,279 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 23:53:09,279 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 23:53:09,279 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 23:53:09,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 23:53:09,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 23:53:09,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 23:53:09,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:53:09,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:53:09,281 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 23:53:09,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:53:09,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 23:53:09,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:53:09,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:53:09,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:53:09,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:53:09,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:53:09,283 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 23:53:09,283 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_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2021-12-06 23:53:09,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:53:09,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:53:09,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:53:09,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:53:09,493 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:53:09,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-12-06 23:53:09,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/data/e6648869f/3d50c55f64134ebea30f51f6eb4a0cbe/FLAG131f8c3fc [2021-12-06 23:53:09,923 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:53:09,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-12-06 23:53:09,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/data/e6648869f/3d50c55f64134ebea30f51f6eb4a0cbe/FLAG131f8c3fc [2021-12-06 23:53:09,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/data/e6648869f/3d50c55f64134ebea30f51f6eb4a0cbe [2021-12-06 23:53:09,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:53:09,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:53:09,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:53:09,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:53:09,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:53:09,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:53:09" (1/1) ... [2021-12-06 23:53:09,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50eedfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:09, skipping insertion in model container [2021-12-06 23:53:09,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:53:09" (1/1) ... [2021-12-06 23:53:09,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:53:09,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:53:10,073 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_5c58a06b-301a-44af-876a-3a01e213b5c4/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2021-12-06 23:53:10,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:53:10,080 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:53:10,091 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_5c58a06b-301a-44af-876a-3a01e213b5c4/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2021-12-06 23:53:10,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:53:10,101 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:53:10,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10 WrapperNode [2021-12-06 23:53:10,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:53:10,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:53:10,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:53:10,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:53:10,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,125 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-06 23:53:10,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:53:10,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:53:10,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:53:10,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:53:10,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:53:10,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:53:10,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:53:10,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:53:10,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (1/1) ... [2021-12-06 23:53:10,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:10,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:10,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:10,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 23:53:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:53:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:53:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-12-06 23:53:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-12-06 23:53:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-12-06 23:53:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-12-06 23:53:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:53:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:53:10,257 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:53:10,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:53:10,336 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:53:10,342 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:53:10,343 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:53:10,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:53:10 BoogieIcfgContainer [2021-12-06 23:53:10,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:53:10,346 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 23:53:10,346 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 23:53:10,350 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 23:53:10,350 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 23:53:10,351 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 11:53:09" (1/3) ... [2021-12-06 23:53:10,352 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ed252cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 11:53:10, skipping insertion in model container [2021-12-06 23:53:10,352 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 23:53:10,352 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:53:10" (2/3) ... [2021-12-06 23:53:10,352 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ed252cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 11:53:10, skipping insertion in model container [2021-12-06 23:53:10,353 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 23:53:10,353 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:53:10" (3/3) ... [2021-12-06 23:53:10,354 INFO L388 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2021-12-06 23:53:10,399 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 23:53:10,399 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 23:53:10,400 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 23:53:10,400 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 23:53:10,400 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 23:53:10,400 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 23:53:10,400 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 23:53:10,400 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 23:53:10,415 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) [2021-12-06 23:53:10,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 23:53:10,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:10,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:10,445 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 23:53:10,445 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:10,445 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 23:53:10,446 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) [2021-12-06 23:53:10,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 23:53:10,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:10,451 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:10,452 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 23:53:10,452 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:10,458 INFO L791 eck$LassoCheckResult]: Stem: 16#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); 7#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; 15#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5#fibo1ENTRYtrue [2021-12-06 23:53:10,459 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret4 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret6 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-12-06 23:53:10,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-12-06 23:53:10,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:10,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116028917] [2021-12-06 23:53:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:10,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:10,545 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:10,568 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:10,571 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-12-06 23:53:10,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:10,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391577479] [2021-12-06 23:53:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:10,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:10,582 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:10,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-12-06 23:53:10,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:10,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475845830] [2021-12-06 23:53:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:10,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:10,609 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:10,625 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:10,796 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:10,796 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:10,797 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:10,797 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:10,797 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 23:53:10,797 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:10,797 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:10,797 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:10,797 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-12-06 23:53:10,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:10,797 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:10,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:10,874 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:10,874 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 23:53:10,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:10,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:10,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:10,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 23:53:10,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:10,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:10,892 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:10,893 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:10,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:10,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:10,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:10,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:10,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 23:53:10,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:10,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:10,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:10,924 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:10,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 23:53:10,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:10,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:10,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 23:53:10,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:10,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:10,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:10,954 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:10,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 23:53:10,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:10,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:10,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:10,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 23:53:10,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:10,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:10,983 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:10,984 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:11,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 23:53:11,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 23:53:11,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:11,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:11,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:11,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:11,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-06 23:53:11,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 23:53:11,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:11,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:11,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:11,042 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:11,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 23:53:11,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 23:53:11,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:11,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:11,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:11,071 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:11,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 23:53:11,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,090 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 23:53:11,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:11,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:11,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:11,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:11,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-06 23:53:11,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,118 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 23:53:11,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:11,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:11,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:11,127 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:11,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 23:53:11,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 23:53:11,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:11,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:11,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-06 23:53:11,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,179 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 23:53:11,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 23:53:11,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:11,236 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 23:53:11,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 23:53:11,238 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:11,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:11,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:11,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:11,239 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 23:53:11,239 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,239 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:11,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:11,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-12-06 23:53:11,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:11,239 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:11,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:11,287 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:11,290 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 23:53:11,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,292 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 23:53:11,293 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,306 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:11,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 23:53:11,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,336 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 23:53:11,337 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,345 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,347 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:11,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 23:53:11,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 23:53:11,367 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,375 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,375 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,375 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,376 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:11,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 23:53:11,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,395 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 23:53:11,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,405 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:11,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-06 23:53:11,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,423 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 23:53:11,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,433 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:11,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:11,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,452 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 23:53:11,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,462 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:11,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 23:53:11,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 23:53:11,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,491 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:11,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-06 23:53:11,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,511 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-06 23:53:11,513 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:11,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:11,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:11,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:11,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:11,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:11,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:11,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:11,524 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 23:53:11,528 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 23:53:11,529 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 23:53:11,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:11,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:11,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:11,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 23:53:11,560 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 23:53:11,560 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 23:53:11,560 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 23:53:11,560 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-12-06 23:53:11,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-06 23:53:11,584 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 23:53:11,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:11,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:53:11,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:11,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-06 23:53:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:11,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:53:11,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:11,747 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-06 23:53:11,748 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) [2021-12-06 23:53:11,886 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. [2021-12-06 23:53:11,887 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 [2021-12-06 23:53:11,891 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) [2021-12-06 23:53:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-12-06 23:53:11,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-06 23:53:11,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:11,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-12-06 23:53:11,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:11,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-12-06 23:53:11,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:11,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-12-06 23:53:11,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 23:53:11,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-12-06 23:53:11,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-06 23:53:11,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-12-06 23:53:11,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-12-06 23:53:11,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:11,909 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-12-06 23:53:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-12-06 23:53:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-12-06 23:53:11,930 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) [2021-12-06 23:53:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-12-06 23:53:11,932 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-12-06 23:53:11,932 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-12-06 23:53:11,933 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 23:53:11,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-12-06 23:53:11,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 23:53:11,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:11,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:11,935 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:11,935 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:11,935 INFO L791 eck$LassoCheckResult]: Stem: 196#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); 197#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; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret6 := fibo1(~n - 1);< 216#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#46#return; 207#L25-1 [2021-12-06 23:53:11,935 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret4 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret6 := fibo1(~n - 1);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#46#return; 207#L25-1 [2021-12-06 23:53:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-12-06 23:53:11,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727290246] [2021-12-06 23:53:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:11,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:11,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:53:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:53:12,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:12,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727290246] [2021-12-06 23:53:12,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727290246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:53:12,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:53:12,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:53:12,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127466810] [2021-12-06 23:53:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:53:12,007 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 23:53:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:12,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-12-06 23:53:12,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:12,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143661118] [2021-12-06 23:53:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:12,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:53:12,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:12,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143661118] [2021-12-06 23:53:12,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143661118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:53:12,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:53:12,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:53:12,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846678061] [2021-12-06 23:53:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:53:12,048 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 23:53:12,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:53:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:53:12,052 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) [2021-12-06 23:53:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:12,100 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-12-06 23:53:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:53:12,101 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-12-06 23:53:12,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 23:53:12,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-12-06 23:53:12,108 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-12-06 23:53:12,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-12-06 23:53:12,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-12-06 23:53:12,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:12,108 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-12-06 23:53:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-12-06 23:53:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-12-06 23:53:12,114 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) [2021-12-06 23:53:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-12-06 23:53:12,116 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-12-06 23:53:12,116 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-12-06 23:53:12,116 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 23:53:12,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-12-06 23:53:12,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 23:53:12,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:12,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:12,118 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:12,118 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:12,119 INFO L791 eck$LassoCheckResult]: Stem: 341#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); 342#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; 360#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret6 := fibo1(~n - 1);< 362#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 386#fibo1FINAL assume true; 385#fibo1EXIT >#46#return; 351#L25-1 [2021-12-06 23:53:12,119 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret7 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret6 := fibo1(~n - 1);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 351#L25-1 [2021-12-06 23:53:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:12,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-12-06 23:53:12,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:12,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459093698] [2021-12-06 23:53:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:12,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:53:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:12,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:12,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459093698] [2021-12-06 23:53:12,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459093698] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:12,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794821690] [2021-12-06 23:53:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:12,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:12,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,182 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 23:53:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:53:12,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:12,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:12,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794821690] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:12,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:12,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-06 23:53:12,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278392858] [2021-12-06 23:53:12,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:12,325 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 23:53:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-12-06 23:53:12,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:12,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294171826] [2021-12-06 23:53:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:12,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:12,333 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:12,340 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:12,451 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:12,451 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:12,451 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:12,451 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:12,451 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 23:53:12,451 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:12,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:12,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-12-06 23:53:12,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:12,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:12,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:12,492 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:12,492 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 23:53:12,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,493 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 23:53:12,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:12,494 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:12,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:12,504 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:12,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 23:53:12,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,523 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 23:53:12,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:12,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:12,532 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:12,532 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:12,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:12,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,551 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 23:53:12,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:12,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:12,561 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:12,561 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:12,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-06 23:53:12,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,580 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-06 23:53:12,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:12,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:12,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:12,589 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:12,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-06 23:53:12,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,608 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-06 23:53:12,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:12,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:12,617 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:12,617 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:12,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-06 23:53:12,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,637 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-06 23:53:12,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:12,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:12,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-06 23:53:12,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:12,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:12,666 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:12,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-06 23:53:12,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 23:53:12,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:13,736 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 23:53:13,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-06 23:53:13,738 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:13,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:13,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:13,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:13,738 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 23:53:13,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:13,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:13,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:13,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-12-06 23:53:13,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:13,739 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:13,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:13,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:13,774 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 23:53:13,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:13,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:13,775 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:13,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-06 23:53:13,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:13,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:13,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:13,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:13,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:13,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:13,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:13,783 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:13,784 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:13,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-06 23:53:13,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:13,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:13,803 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:13,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-06 23:53:13,804 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:13,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:13,810 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:13,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:13,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:13,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:13,811 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:13,811 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:13,812 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:13,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-06 23:53:13,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:13,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:13,831 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:13,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-06 23:53:13,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:13,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:13,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:13,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:13,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:13,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:13,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:13,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:13,841 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:13,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:13,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:13,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:13,860 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:13,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-06 23:53:13,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:13,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:13,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:13,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:13,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:13,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:13,869 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:13,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:13,870 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:13,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-06 23:53:13,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:13,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:13,888 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:13,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-06 23:53:13,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:13,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:13,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:13,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:13,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:13,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:13,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:13,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:13,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 23:53:13,903 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 23:53:13,904 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 23:53:13,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:13,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:13,904 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:13,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-06 23:53:13,905 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 23:53:13,905 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 23:53:13,905 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 23:53:13,905 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-12-06 23:53:13,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-06 23:53:13,925 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 23:53:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:13,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:53:13,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:14,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-06 23:53:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:53:14,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:14,097 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-12-06 23:53:14,097 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) [2021-12-06 23:53:14,302 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. [2021-12-06 23:53:14,302 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 [2021-12-06 23:53:14,303 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) [2021-12-06 23:53:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-12-06 23:53:14,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-12-06 23:53:14,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:14,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-12-06 23:53:14,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:14,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-12-06 23:53:14,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:14,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-12-06 23:53:14,310 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 23:53:14,315 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-12-06 23:53:14,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-12-06 23:53:14,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-12-06 23:53:14,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-12-06 23:53:14,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:14,316 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-12-06 23:53:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-12-06 23:53:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-12-06 23:53:14,327 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) [2021-12-06 23:53:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-12-06 23:53:14,329 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-12-06 23:53:14,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:14,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 23:53:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:53:14,330 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) [2021-12-06 23:53:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:14,437 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2021-12-06 23:53:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:53:14,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2021-12-06 23:53:14,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 23:53:14,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2021-12-06 23:53:14,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2021-12-06 23:53:14,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2021-12-06 23:53:14,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2021-12-06 23:53:14,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:14,445 INFO L681 BuchiCegarLoop]: Abstraction has 185 states and 246 transitions. [2021-12-06 23:53:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2021-12-06 23:53:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2021-12-06 23:53:14,455 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) [2021-12-06 23:53:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2021-12-06 23:53:14,456 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2021-12-06 23:53:14,456 INFO L587 BuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2021-12-06 23:53:14,456 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 23:53:14,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2021-12-06 23:53:14,458 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 23:53:14,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:14,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:14,461 INFO L842 BuchiCegarLoop]: 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] [2021-12-06 23:53:14,462 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-06 23:53:14,462 INFO L791 eck$LassoCheckResult]: Stem: 1217#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); 1218#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; 1245#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1291#fibo1ENTRY ~n := #in~n; 1325#L10 assume !(~n < 1); 1324#L12 assume !(1 == ~n); 1223#L15 call #t~ret4 := fibo2(~n - 1);< 1277#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1222#L22 assume !(1 == ~n); 1224#L25 call #t~ret6 := fibo1(~n - 1);< 1249#fibo1ENTRY ~n := #in~n; 1316#L10 assume !(~n < 1); 1315#L12 assume !(1 == ~n); 1248#L15 call #t~ret4 := fibo2(~n - 1);< 1314#fibo2ENTRY ~n := #in~n; 1311#L20 assume !(~n < 1); 1312#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1249#fibo1ENTRY ~n := #in~n; 1316#L10 assume !(~n < 1); 1315#L12 assume !(1 == ~n); 1248#L15 call #t~ret4 := fibo2(~n - 1);< 1314#fibo2ENTRY ~n := #in~n; 1311#L20 assume ~n < 1;#res := 0; 1271#fibo2FINAL assume true; 1272#fibo2EXIT >#50#return; 1247#L15-1 call #t~ret5 := fibo2(~n - 2);< 1251#fibo2ENTRY ~n := #in~n; 1381#L20 assume !(~n < 1); 1380#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1249#fibo1ENTRY ~n := #in~n; 1317#L10 assume !(~n < 1); 1320#L12 assume 1 == ~n;#res := 1; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#46#return; 1227#L25-1 call #t~ret7 := fibo1(~n - 2);< 1237#fibo1ENTRY ~n := #in~n; 1310#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1236#L15 call #t~ret4 := fibo2(~n - 1);< 1307#fibo2ENTRY ~n := #in~n; 1305#L20 assume ~n < 1;#res := 0; 1306#fibo2FINAL assume true; 1309#fibo2EXIT >#50#return; 1235#L15-1 call #t~ret5 := fibo2(~n - 2);< 1307#fibo2ENTRY ~n := #in~n; 1305#L20 assume !(~n < 1); 1300#L22 assume 1 == ~n;#res := 1; 1301#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#48#return; 1374#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1369#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#46#return; 1263#L25-1 call #t~ret7 := fibo1(~n - 2);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#50#return; 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#48#return; 1374#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1369#fibo2EXIT >#50#return; 1285#L15-1 [2021-12-06 23:53:14,462 INFO L793 eck$LassoCheckResult]: Loop: 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume !(~n < 1); 1375#L22 assume !(1 == ~n); 1262#L25 call #t~ret6 := fibo1(~n - 1);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume !(~n < 1); 1375#L22 assume !(1 == ~n); 1262#L25 call #t~ret6 := fibo1(~n - 1);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#50#return; 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#46#return; 1263#L25-1 call #t~ret7 := fibo1(~n - 2);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#50#return; 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#48#return; 1374#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1369#fibo2EXIT >#50#return; 1285#L15-1 [2021-12-06 23:53:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-12-06 23:53:14,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:14,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507624510] [2021-12-06 23:53:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:14,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:53:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:53:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-06 23:53:14,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:14,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507624510] [2021-12-06 23:53:14,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507624510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:14,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130456799] [2021-12-06 23:53:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:14,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:14,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:14,687 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:14,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 23:53:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:14,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:53:14,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 23:53:14,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 23:53:15,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130456799] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:15,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:15,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 31 [2021-12-06 23:53:15,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332982843] [2021-12-06 23:53:15,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:15,168 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 23:53:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-12-06 23:53:15,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:15,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960844474] [2021-12-06 23:53:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:15,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:53:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:53:15,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:15,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960844474] [2021-12-06 23:53:15,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960844474] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:15,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77401454] [2021-12-06 23:53:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:15,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:15,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:15,236 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:15,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 23:53:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:53:15,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 23:53:15,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 23:53:15,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77401454] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:15,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:15,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2021-12-06 23:53:15,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514113691] [2021-12-06 23:53:15,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:15,511 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 23:53:15,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:53:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:53:15,512 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) [2021-12-06 23:53:15,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:15,639 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2021-12-06 23:53:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:53:15,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2021-12-06 23:53:15,643 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 23:53:15,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2021-12-06 23:53:15,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2021-12-06 23:53:15,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-12-06 23:53:15,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2021-12-06 23:53:15,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:15,647 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 268 transitions. [2021-12-06 23:53:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2021-12-06 23:53:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2021-12-06 23:53:15,657 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) [2021-12-06 23:53:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2021-12-06 23:53:15,658 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-12-06 23:53:15,658 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-12-06 23:53:15,658 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 23:53:15,658 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2021-12-06 23:53:15,660 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 23:53:15,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:15,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:15,661 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:15,661 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-06 23:53:15,661 INFO L791 eck$LassoCheckResult]: Stem: 2735#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2736#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2765#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2797#fibo1ENTRY ~n := #in~n; 2786#L10 assume !(~n < 1); 2781#L12 assume !(1 == ~n); 2741#L15 call #t~ret4 := fibo2(~n - 1);< 2789#fibo2ENTRY ~n := #in~n; 2791#L20 assume !(~n < 1); 2740#L22 assume !(1 == ~n); 2742#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2807#L12 assume !(1 == ~n); 2752#L15 call #t~ret4 := fibo2(~n - 1);< 2802#fibo2ENTRY ~n := #in~n; 2828#L20 assume !(~n < 1); 2827#L22 assume !(1 == ~n); 2772#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2811#L10 assume !(~n < 1); 2838#L12 assume 1 == ~n;#res := 1; 2839#fibo1FINAL assume true; 2908#fibo1EXIT >#46#return; 2751#L25-1 call #t~ret7 := fibo1(~n - 2);< 2754#fibo1ENTRY ~n := #in~n; 2914#L10 assume ~n < 1;#res := 0; 2912#fibo1FINAL assume true; 2910#fibo1EXIT >#48#return; 2774#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2775#fibo2FINAL assume true; 2782#fibo2EXIT >#50#return; 2851#L15-1 [2021-12-06 23:53:15,662 INFO L793 eck$LassoCheckResult]: Loop: 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume !(1 == ~n); 2860#L25 call #t~ret6 := fibo1(~n - 1);< 2870#fibo1ENTRY ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2854#L15 call #t~ret4 := fibo2(~n - 1);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume !(1 == ~n); 2860#L25 call #t~ret6 := fibo1(~n - 1);< 2870#fibo1ENTRY ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2854#L15 call #t~ret4 := fibo2(~n - 1);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume 1 == ~n;#res := 1; 2888#fibo2FINAL assume true; 2863#fibo2EXIT >#50#return; 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume ~n < 1;#res := 0; 2890#fibo2FINAL assume true; 2886#fibo2EXIT >#52#return; 2852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2885#fibo1FINAL assume true; 2882#fibo1EXIT >#46#return; 2857#L25-1 call #t~ret7 := fibo1(~n - 2);< 2870#fibo1ENTRY ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2854#L15 call #t~ret4 := fibo2(~n - 1);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume 1 == ~n;#res := 1; 2888#fibo2FINAL assume true; 2863#fibo2EXIT >#50#return; 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume ~n < 1;#res := 0; 2890#fibo2FINAL assume true; 2886#fibo2EXIT >#52#return; 2852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2885#fibo1FINAL assume true; 2882#fibo1EXIT >#48#return; 2879#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2878#fibo2FINAL assume true; 2853#fibo2EXIT >#50#return; 2851#L15-1 [2021-12-06 23:53:15,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-12-06 23:53:15,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:15,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887769990] [2021-12-06 23:53:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:15,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:15,668 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:15,675 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-12-06 23:53:15,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:15,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705146695] [2021-12-06 23:53:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:15,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:53:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:53:15,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:15,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705146695] [2021-12-06 23:53:15,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705146695] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:15,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677188265] [2021-12-06 23:53:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:15,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:15,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:15,767 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:15,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 23:53:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:15,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:53:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:53:15,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:53:16,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677188265] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:16,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:16,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2021-12-06 23:53:16,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468862061] [2021-12-06 23:53:16,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:16,103 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 23:53:16,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:53:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:53:16,104 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) [2021-12-06 23:53:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:16,260 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2021-12-06 23:53:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:53:16,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2021-12-06 23:53:16,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-06 23:53:16,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2021-12-06 23:53:16,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2021-12-06 23:53:16,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2021-12-06 23:53:16,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2021-12-06 23:53:16,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:16,265 INFO L681 BuchiCegarLoop]: Abstraction has 106 states and 132 transitions. [2021-12-06 23:53:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2021-12-06 23:53:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-12-06 23:53:16,268 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) [2021-12-06 23:53:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2021-12-06 23:53:16,269 INFO L704 BuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-12-06 23:53:16,269 INFO L587 BuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-12-06 23:53:16,269 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 23:53:16,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2021-12-06 23:53:16,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-06 23:53:16,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:16,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:16,271 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:16,271 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:16,271 INFO L791 eck$LassoCheckResult]: Stem: 3489#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); 3490#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; 3512#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3539#fibo1ENTRY ~n := #in~n; 3527#L10 assume !(~n < 1); 3528#L12 assume !(1 == ~n); 3513#L15 call #t~ret4 := fibo2(~n - 1);< 3573#fibo2ENTRY ~n := #in~n; 3534#L20 assume !(~n < 1); 3535#L22 assume !(1 == ~n); 3498#L25 call #t~ret6 := fibo1(~n - 1);< 3508#fibo1ENTRY ~n := #in~n; 3509#L10 assume !(~n < 1); 3522#L12 assume !(1 == ~n); 3495#L15 call #t~ret4 := fibo2(~n - 1);< 3530#fibo2ENTRY ~n := #in~n; 3538#L20 assume !(~n < 1); 3494#L22 assume !(1 == ~n); 3496#L25 call #t~ret6 := fibo1(~n - 1);< 3508#fibo1ENTRY ~n := #in~n; 3510#L10 assume !(~n < 1); 3542#L12 assume 1 == ~n;#res := 1; 3497#fibo1FINAL assume true; 3499#fibo1EXIT >#46#return; 3511#L25-1 call #t~ret7 := fibo1(~n - 2);< 3582#fibo1ENTRY ~n := #in~n; 3585#L10 assume ~n < 1;#res := 0; 3584#fibo1FINAL assume true; 3580#fibo1EXIT >#48#return; 3577#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3576#fibo2FINAL assume true; 3574#fibo2EXIT >#50#return; 3517#L15-1 [2021-12-06 23:53:16,271 INFO L793 eck$LassoCheckResult]: Loop: 3517#L15-1 call #t~ret5 := fibo2(~n - 2);< 3548#fibo2ENTRY ~n := #in~n; 3571#L20 assume !(~n < 1); 3543#L22 assume !(1 == ~n); 3504#L25 call #t~ret6 := fibo1(~n - 1);< 3502#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3545#L12 assume !(1 == ~n); 3516#L15 call #t~ret4 := fibo2(~n - 1);< 3529#fibo2ENTRY ~n := #in~n; 3537#L20 assume !(~n < 1); 3543#L22 assume !(1 == ~n); 3504#L25 call #t~ret6 := fibo1(~n - 1);< 3502#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3545#L12 assume 1 == ~n;#res := 1; 3521#fibo1FINAL assume true; 3589#fibo1EXIT >#46#return; 3525#L25-1 call #t~ret7 := fibo1(~n - 2);< 3551#fibo1ENTRY ~n := #in~n; 3524#L10 assume ~n < 1;#res := 0; 3526#fibo1FINAL assume true; 3583#fibo1EXIT >#48#return; 3515#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3518#fibo2FINAL assume true; 3523#fibo2EXIT >#50#return; 3517#L15-1 [2021-12-06 23:53:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:16,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2021-12-06 23:53:16,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:16,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718544898] [2021-12-06 23:53:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:16,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:16,277 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:16,283 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2021-12-06 23:53:16,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:16,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656064920] [2021-12-06 23:53:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:16,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:16,287 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:16,291 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:16,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:16,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2021-12-06 23:53:16,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:16,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933853805] [2021-12-06 23:53:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:16,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:53:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:53:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 23:53:16,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:16,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933853805] [2021-12-06 23:53:16,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933853805] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:16,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456911432] [2021-12-06 23:53:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:16,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:16,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:16,372 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:16,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 23:53:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:53:16,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:53:16,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 23:53:16,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456911432] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:16,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:16,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2021-12-06 23:53:16,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186183730] [2021-12-06 23:53:16,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:16,749 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:16,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:16,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:16,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:16,750 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 23:53:16,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:16,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:16,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:16,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-12-06 23:53:16,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:16,750 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:16,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:16,793 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:16,793 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 23:53:16,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:16,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:16,794 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:16,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-06 23:53:16,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:16,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:16,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:16,803 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:16,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-06 23:53:16,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:16,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:16,822 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:16,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-06 23:53:16,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:16,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:16,830 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:16,830 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:16,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-06 23:53:16,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:16,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:16,849 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:16,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-06 23:53:16,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:16,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:16,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:16,858 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:16,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:16,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:16,876 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:16,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-06 23:53:16,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:16,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:16,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-12-06 23:53:16,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:16,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:16,905 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:16,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-06 23:53:16,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 23:53:16,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:18,151 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 23:53:18,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-12-06 23:53:18,154 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:18,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:18,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:18,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:18,154 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 23:53:18,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:18,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:18,154 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:18,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-12-06 23:53:18,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:18,154 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:18,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:18,203 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:18,203 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 23:53:18,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:18,204 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:18,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-06 23:53:18,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:18,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:18,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:18,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:18,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:18,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:18,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:18,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:18,214 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:18,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-06 23:53:18,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:18,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:18,232 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:18,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-06 23:53:18,233 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:18,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:18,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:18,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:18,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:18,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:18,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:18,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:18,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:18,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-12-06 23:53:18,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:18,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:18,261 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:18,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-06 23:53:18,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:18,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:18,269 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:18,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:18,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:18,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:18,271 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:18,271 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:18,272 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 23:53:18,275 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-06 23:53:18,275 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 23:53:18,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:18,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:18,275 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:18,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-06 23:53:18,276 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 23:53:18,276 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 23:53:18,276 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 23:53:18,276 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-12-06 23:53:18,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-06 23:53:18,294 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 23:53:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:18,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:53:18,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:18,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 23:53:18,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:18,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-06 23:53:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:53:18,584 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2021-12-06 23:53:18,585 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) [2021-12-06 23:53:18,785 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. [2021-12-06 23:53:18,785 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 [2021-12-06 23:53:18,786 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) [2021-12-06 23:53:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2021-12-06 23:53:18,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2021-12-06 23:53:18,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:18,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2021-12-06 23:53:18,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:18,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2021-12-06 23:53:18,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:18,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2021-12-06 23:53:18,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2021-12-06 23:53:18,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2021-12-06 23:53:18,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2021-12-06 23:53:18,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2021-12-06 23:53:18,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2021-12-06 23:53:18,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:18,798 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 395 transitions. [2021-12-06 23:53:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2021-12-06 23:53:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2021-12-06 23:53:18,806 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) [2021-12-06 23:53:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2021-12-06 23:53:18,808 INFO L704 BuchiCegarLoop]: Abstraction has 266 states and 357 transitions. [2021-12-06 23:53:18,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:53:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:53:18,809 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) [2021-12-06 23:53:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:18,893 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2021-12-06 23:53:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:53:18,894 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2021-12-06 23:53:18,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-06 23:53:18,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2021-12-06 23:53:18,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-12-06 23:53:18,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-12-06 23:53:18,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2021-12-06 23:53:18,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:18,898 INFO L681 BuchiCegarLoop]: Abstraction has 122 states and 145 transitions. [2021-12-06 23:53:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2021-12-06 23:53:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2021-12-06 23:53:18,901 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) [2021-12-06 23:53:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-12-06 23:53:18,903 INFO L704 BuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-12-06 23:53:18,903 INFO L587 BuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-12-06 23:53:18,903 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 23:53:18,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2021-12-06 23:53:18,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-06 23:53:18,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:18,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:18,906 INFO L842 BuchiCegarLoop]: 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] [2021-12-06 23:53:18,906 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:18,906 INFO L791 eck$LassoCheckResult]: Stem: 5005#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); 5006#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; 5027#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5053#fibo1ENTRY ~n := #in~n; 5054#L10 assume !(~n < 1); 5070#L12 assume !(1 == ~n); 5011#L15 call #t~ret4 := fibo2(~n - 1);< 5050#fibo2ENTRY ~n := #in~n; 5047#L20 assume !(~n < 1); 5010#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5021#fibo1ENTRY ~n := #in~n; 5023#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5017#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5108#L20 assume !(~n < 1); 5107#L22 assume !(1 == ~n); 5022#L25 call #t~ret6 := fibo1(~n - 1);< 5021#fibo1ENTRY ~n := #in~n; 5023#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5017#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5108#L20 assume !(~n < 1); 5107#L22 assume !(1 == ~n); 5022#L25 call #t~ret6 := fibo1(~n - 1);< 5021#fibo1ENTRY ~n := #in~n; 5024#L10 assume !(~n < 1); 5062#L12 assume 1 == ~n;#res := 1; 5068#fibo1FINAL assume true; 5110#fibo1EXIT >#46#return; 5016#L25-1 call #t~ret7 := fibo1(~n - 2);< 5018#fibo1ENTRY ~n := #in~n; 5118#L10 assume ~n < 1;#res := 0; 5116#fibo1FINAL assume true; 5025#fibo1EXIT >#48#return; 5026#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5115#fibo2FINAL assume true; 5048#fibo2EXIT >#50#return; 5008#L15-1 call #t~ret5 := fibo2(~n - 2);< 5031#fibo2ENTRY ~n := #in~n; 5117#L20 assume ~n < 1;#res := 0; 5009#fibo2FINAL assume true; 5037#fibo2EXIT >#52#return; 5080#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5078#fibo1FINAL assume true; 5075#fibo1EXIT >#46#return; 5057#L25-1 [2021-12-06 23:53:18,907 INFO L793 eck$LassoCheckResult]: Loop: 5057#L25-1 call #t~ret7 := fibo1(~n - 2);< 5030#fibo1ENTRY ~n := #in~n; 5065#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5033#L15 call #t~ret4 := fibo2(~n - 1);< 5066#fibo2ENTRY ~n := #in~n; 5063#L20 assume !(~n < 1); 5064#L22 assume !(1 == ~n); 5059#L25 call #t~ret6 := fibo1(~n - 1);< 5030#fibo1ENTRY ~n := #in~n; 5065#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5033#L15 call #t~ret4 := fibo2(~n - 1);< 5066#fibo2ENTRY ~n := #in~n; 5063#L20 assume !(~n < 1); 5064#L22 assume !(1 == ~n); 5059#L25 call #t~ret6 := fibo1(~n - 1);< 5030#fibo1ENTRY ~n := #in~n; 5065#L10 assume !(~n < 1); 5055#L12 assume 1 == ~n;#res := 1; 5060#fibo1FINAL assume true; 5104#fibo1EXIT >#46#return; 5039#L25-1 call #t~ret7 := fibo1(~n - 2);< 5119#fibo1ENTRY ~n := #in~n; 5038#L10 assume ~n < 1;#res := 0; 5040#fibo1FINAL assume true; 5120#fibo1EXIT >#48#return; 5102#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5100#fibo2FINAL assume true; 5092#fibo2EXIT >#50#return; 5086#L15-1 call #t~ret5 := fibo2(~n - 2);< 5091#fibo2ENTRY ~n := #in~n; 5106#L20 assume ~n < 1;#res := 0; 5095#fibo2FINAL assume true; 5084#fibo2EXIT >#52#return; 5087#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5083#fibo1FINAL assume true; 5076#fibo1EXIT >#46#return; 5057#L25-1 [2021-12-06 23:53:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2021-12-06 23:53:18,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:18,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673591566] [2021-12-06 23:53:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:18,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:53:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:53:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:53:19,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:19,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673591566] [2021-12-06 23:53:19,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673591566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:19,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602406747] [2021-12-06 23:53:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:19,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:19,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:19,015 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:19,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-06 23:53:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:53:19,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:53:19,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:53:19,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602406747] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:19,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:19,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2021-12-06 23:53:19,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681099589] [2021-12-06 23:53:19,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:19,222 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 23:53:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2021-12-06 23:53:19,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:19,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708532445] [2021-12-06 23:53:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:19,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:53:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:53:19,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:19,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708532445] [2021-12-06 23:53:19,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708532445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:19,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654410059] [2021-12-06 23:53:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:19,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:19,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:19,273 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:19,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-12-06 23:53:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:53:19,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 23:53:19,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 23:53:19,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654410059] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:19,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:19,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-12-06 23:53:19,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383396711] [2021-12-06 23:53:19,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:19,490 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 23:53:19,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:53:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:53:19,491 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) [2021-12-06 23:53:19,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:19,567 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2021-12-06 23:53:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:53:19,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2021-12-06 23:53:19,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-06 23:53:19,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2021-12-06 23:53:19,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-12-06 23:53:19,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-12-06 23:53:19,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2021-12-06 23:53:19,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:19,571 INFO L681 BuchiCegarLoop]: Abstraction has 122 states and 143 transitions. [2021-12-06 23:53:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2021-12-06 23:53:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-12-06 23:53:19,573 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) [2021-12-06 23:53:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-12-06 23:53:19,574 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-06 23:53:19,574 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-06 23:53:19,574 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-06 23:53:19,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2021-12-06 23:53:19,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-06 23:53:19,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:19,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:19,576 INFO L842 BuchiCegarLoop]: 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] [2021-12-06 23:53:19,576 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-06 23:53:19,577 INFO L791 eck$LassoCheckResult]: Stem: 5915#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); 5916#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; 5944#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5962#fibo1ENTRY ~n := #in~n; 5964#L10 assume !(~n < 1); 5976#L12 assume !(1 == ~n); 5921#L15 call #t~ret4 := fibo2(~n - 1);< 5974#fibo2ENTRY ~n := #in~n; 5959#L20 assume !(~n < 1); 5920#L22 assume !(1 == ~n); 5922#L25 call #t~ret6 := fibo1(~n - 1);< 5932#fibo1ENTRY ~n := #in~n; 5935#L10 assume !(~n < 1); 5952#L12 assume !(1 == ~n); 5948#L15 call #t~ret4 := fibo2(~n - 1);< 5957#fibo2ENTRY ~n := #in~n; 5961#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5933#L25 call #t~ret6 := fibo1(~n - 1);< 5932#fibo1ENTRY ~n := #in~n; 5935#L10 assume !(~n < 1); 5952#L12 assume !(1 == ~n); 5948#L15 call #t~ret4 := fibo2(~n - 1);< 5957#fibo2ENTRY ~n := #in~n; 5961#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5933#L25 call #t~ret6 := fibo1(~n - 1);< 5932#fibo1ENTRY ~n := #in~n; 5934#L10 assume !(~n < 1); 5968#L12 assume 1 == ~n;#res := 1; 5972#fibo1FINAL assume true; 6011#fibo1EXIT >#46#return; 6008#L25-1 call #t~ret7 := fibo1(~n - 2);< 6009#fibo1ENTRY ~n := #in~n; 6015#L10 assume ~n < 1;#res := 0; 6014#fibo1FINAL assume true; 6007#fibo1EXIT >#48#return; 6006#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6005#fibo2FINAL assume true; 6001#fibo2EXIT >#50#return; 5999#L15-1 call #t~ret5 := fibo2(~n - 2);< 6000#fibo2ENTRY ~n := #in~n; 6018#L20 assume !(~n < 1); 6017#L22 assume 1 == ~n;#res := 1; 6016#fibo2FINAL assume true; 5998#fibo2EXIT >#52#return; 5983#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5982#fibo1FINAL assume true; 5980#fibo1EXIT >#46#return; 5939#L25-1 [2021-12-06 23:53:19,577 INFO L793 eck$LassoCheckResult]: Loop: 5939#L25-1 call #t~ret7 := fibo1(~n - 2);< 5925#fibo1ENTRY ~n := #in~n; 6030#L10 assume !(~n < 1); 5965#L12 assume !(1 == ~n); 5949#L15 call #t~ret4 := fibo2(~n - 1);< 5971#fibo2ENTRY ~n := #in~n; 5997#L20 assume !(~n < 1); 5995#L22 assume !(1 == ~n); 5941#L25 call #t~ret6 := fibo1(~n - 1);< 5947#fibo1ENTRY ~n := #in~n; 5975#L10 assume !(~n < 1); 5965#L12 assume !(1 == ~n); 5949#L15 call #t~ret4 := fibo2(~n - 1);< 5971#fibo2ENTRY ~n := #in~n; 5997#L20 assume !(~n < 1); 5995#L22 assume !(1 == ~n); 5941#L25 call #t~ret6 := fibo1(~n - 1);< 5947#fibo1ENTRY ~n := #in~n; 5975#L10 assume !(~n < 1); 5965#L12 assume !(1 == ~n); 5949#L15 call #t~ret4 := fibo2(~n - 1);< 5971#fibo2ENTRY ~n := #in~n; 5997#L20 assume !(~n < 1); 5995#L22 assume 1 == ~n;#res := 1; 5993#fibo2FINAL assume true; 5992#fibo2EXIT >#50#return; 5989#L15-1 call #t~ret5 := fibo2(~n - 2);< 5991#fibo2ENTRY ~n := #in~n; 5996#L20 assume ~n < 1;#res := 0; 5994#fibo2FINAL assume true; 5988#fibo2EXIT >#52#return; 5987#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5986#fibo1FINAL assume true; 5979#fibo1EXIT >#46#return; 5940#L25-1 call #t~ret7 := fibo1(~n - 2);< 6031#fibo1ENTRY ~n := #in~n; 6033#L10 assume ~n < 1;#res := 0; 5955#fibo1FINAL assume true; 6032#fibo1EXIT >#48#return; 5943#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5950#fibo2FINAL assume true; 6021#fibo2EXIT >#50#return; 5990#L15-1 call #t~ret5 := fibo2(~n - 2);< 6004#fibo2ENTRY ~n := #in~n; 6013#L20 assume !(~n < 1); 6012#L22 assume 1 == ~n;#res := 1; 6010#fibo2FINAL assume true; 6003#fibo2EXIT >#52#return; 6002#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5984#fibo1FINAL assume true; 5981#fibo1EXIT >#46#return; 5939#L25-1 [2021-12-06 23:53:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2021-12-06 23:53:19,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:19,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080359287] [2021-12-06 23:53:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:19,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:53:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:53:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 23:53:19,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080359287] [2021-12-06 23:53:19,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080359287] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056567648] [2021-12-06 23:53:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:19,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:19,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:19,660 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:19,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-06 23:53:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:53:19,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:53:19,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:53:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056567648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:19,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:19,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2021-12-06 23:53:19,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037357108] [2021-12-06 23:53:19,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:19,867 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 23:53:19,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2021-12-06 23:53:19,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:19,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636483650] [2021-12-06 23:53:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:19,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:53:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:53:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 23:53:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:53:19,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:19,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636483650] [2021-12-06 23:53:19,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636483650] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:19,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412539792] [2021-12-06 23:53:19,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:19,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:19,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:19,940 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:19,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-12-06 23:53:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:19,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:53:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:53:20,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 23:53:20,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412539792] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:20,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:20,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-12-06 23:53:20,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895798440] [2021-12-06 23:53:20,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:20,207 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 23:53:20,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:53:20,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:53:20,208 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) [2021-12-06 23:53:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:20,392 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-12-06 23:53:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:53:20,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2021-12-06 23:53:20,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 23:53:20,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2021-12-06 23:53:20,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-12-06 23:53:20,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-12-06 23:53:20,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2021-12-06 23:53:20,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 23:53:20,395 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-06 23:53:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2021-12-06 23:53:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 23:53:20,397 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) [2021-12-06 23:53:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-12-06 23:53:20,397 INFO L704 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-06 23:53:20,397 INFO L587 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-06 23:53:20,397 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-06 23:53:20,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2021-12-06 23:53:20,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 23:53:20,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 23:53:20,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 23:53:20,398 INFO L842 BuchiCegarLoop]: 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] [2021-12-06 23:53:20,398 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:20,399 INFO L791 eck$LassoCheckResult]: Stem: 6955#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); 6956#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; 6977#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6999#fibo1ENTRY ~n := #in~n; 7002#L10 assume !(~n < 1); 7041#L12 assume !(1 == ~n); 6961#L15 call #t~ret4 := fibo2(~n - 1);< 6989#fibo2ENTRY ~n := #in~n; 6993#L20 assume !(~n < 1); 6960#L22 assume !(1 == ~n); 6962#L25 call #t~ret6 := fibo1(~n - 1);< 6973#fibo1ENTRY ~n := #in~n; 6976#L10 assume !(~n < 1); 6985#L12 assume !(1 == ~n); 6979#L15 call #t~ret4 := fibo2(~n - 1);< 7018#fibo2ENTRY ~n := #in~n; 7021#L20 assume !(~n < 1); 7020#L22 assume !(1 == ~n); 6974#L25 call #t~ret6 := fibo1(~n - 1);< 6973#fibo1ENTRY ~n := #in~n; 6975#L10 assume !(~n < 1); 6983#L12 assume 1 == ~n;#res := 1; 6984#fibo1FINAL assume true; 7034#fibo1EXIT >#46#return; 7031#L25-1 call #t~ret7 := fibo1(~n - 2);< 7032#fibo1ENTRY ~n := #in~n; 7036#L10 assume ~n < 1;#res := 0; 7035#fibo1FINAL assume true; 7030#fibo1EXIT >#48#return; 7028#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7026#fibo2FINAL assume true; 7017#fibo2EXIT >#50#return; 6991#L15-1 call #t~ret5 := fibo2(~n - 2);< 7015#fibo2ENTRY ~n := #in~n; 6990#L20 assume !(~n < 1); 6992#L22 assume 1 == ~n;#res := 1; 7038#fibo2FINAL assume true; 7014#fibo2EXIT >#52#return; 7013#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7011#fibo1FINAL assume true; 7010#fibo1EXIT >#46#return; 6964#L25-1 call #t~ret7 := fibo1(~n - 2);< 7005#fibo1ENTRY ~n := #in~n; 7043#L10 assume !(~n < 1); 7000#L12 [2021-12-06 23:53:20,399 INFO L793 eck$LassoCheckResult]: Loop: 7000#L12 assume !(1 == ~n); 6970#L15 call #t~ret4 := fibo2(~n - 1);< 6988#fibo2ENTRY ~n := #in~n; 7006#L20 assume !(~n < 1); 7007#L22 assume !(1 == ~n); 6967#L25 call #t~ret6 := fibo1(~n - 1);< 6978#fibo1ENTRY ~n := #in~n; 7001#L10 assume !(~n < 1); 7000#L12 [2021-12-06 23:53:20,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2021-12-06 23:53:20,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:20,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134977654] [2021-12-06 23:53:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:20,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:20,404 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:20,410 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2021-12-06 23:53:20,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:20,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383368719] [2021-12-06 23:53:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:20,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:20,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:53:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:53:20,414 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:53:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2021-12-06 23:53:20,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:20,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969888813] [2021-12-06 23:53:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:20,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:53:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:53:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 23:53:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:53:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:53:20,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:20,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969888813] [2021-12-06 23:53:20,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969888813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:20,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439895906] [2021-12-06 23:53:20,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:53:20,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:20,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:20,476 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:20,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-12-06 23:53:20,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 23:53:20,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:53:20,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:53:20,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:53:20,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:53:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:53:20,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439895906] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:53:20,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:53:20,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2021-12-06 23:53:20,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817894389] [2021-12-06 23:53:20,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:20,677 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:20,677 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:20,677 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:20,677 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:20,677 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 23:53:20,677 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:20,677 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:20,677 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:20,677 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-12-06 23:53:20,677 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:20,677 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:20,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:20,714 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:20,714 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 23:53:20,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:20,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:20,715 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:20,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-06 23:53:20,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:20,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:20,724 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:20,724 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:20,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-06 23:53:20,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:20,742 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:20,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-06 23:53:20,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:20,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:20,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:20,751 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:20,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-12-06 23:53:20,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:20,769 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:20,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-06 23:53:20,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:20,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:20,778 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:20,778 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:20,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-12-06 23:53:20,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:20,797 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:20,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-06 23:53:20,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:20,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:20,806 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 23:53:20,806 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 23:53:20,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:20,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:20,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:20,824 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:20,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-06 23:53:20,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 23:53:20,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:20,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-12-06 23:53:20,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:20,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:20,858 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:20,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-06 23:53:20,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 23:53:20,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 23:53:21,735 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 23:53:21,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-06 23:53:21,737 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 23:53:21,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 23:53:21,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 23:53:21,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 23:53:21,738 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 23:53:21,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 23:53:21,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 23:53:21,738 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-12-06 23:53:21,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 23:53:21,738 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 23:53:21,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 23:53:21,769 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 23:53:21,769 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 23:53:21,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,769 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-06 23:53:21,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:21,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,779 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-12-06 23:53:21,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,798 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-06 23:53:21,799 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:21,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,807 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-12-06 23:53:21,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,826 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-06 23:53:21,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:21,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,834 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,836 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:21,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,855 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-06 23:53:21,856 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:21,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,864 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-12-06 23:53:21,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,883 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-12-06 23:53:21,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:21,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,893 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-12-06 23:53:21,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,911 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-12-06 23:53:21,913 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 [2021-12-06 23:53:21,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,921 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-12-06 23:53:21,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,940 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-12-06 23:53:21,941 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 [2021-12-06 23:53:21,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:21,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,970 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:21,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-12-06 23:53:21,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:21,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:21,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:21,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:21,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:21,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:21,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:21,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:21,980 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 23:53:21,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-12-06 23:53:21,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:21,999 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:22,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-12-06 23:53:22,000 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 23:53:22,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 23:53:22,007 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 23:53:22,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 23:53:22,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 23:53:22,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 23:53:22,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 23:53:22,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 23:53:22,010 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 23:53:22,013 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 23:53:22,013 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 23:53:22,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 23:53:22,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:22,014 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 23:53:22,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-06 23:53:22,014 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 23:53:22,014 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 23:53:22,015 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 23:53:22,015 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-12-06 23:53:22,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-12-06 23:53:22,032 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 23:53:22,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:22,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:53:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:22,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-12-06 23:53:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:22,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:53:22,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:22,333 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-12-06 23:53:22,333 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) [2021-12-06 23:53:22,375 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. [2021-12-06 23:53:22,376 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 [2021-12-06 23:53:22,376 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) [2021-12-06 23:53:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-12-06 23:53:22,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-06 23:53:22,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:22,376 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 23:53:22,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:22,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:53:22,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:22,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:53:22,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:22,645 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2021-12-06 23:53:22,645 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) [2021-12-06 23:53:22,683 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. [2021-12-06 23:53:22,684 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 [2021-12-06 23:53:22,684 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) [2021-12-06 23:53:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-12-06 23:53:22,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-06 23:53:22,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:22,685 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 23:53:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:22,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:53:22,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:22,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:53:22,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:53:22,948 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-12-06 23:53:22,949 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) [2021-12-06 23:53:23,016 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. [2021-12-06 23:53:23,017 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 [2021-12-06 23:53:23,017 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) [2021-12-06 23:53:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2021-12-06 23:53:23,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-06 23:53:23,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:23,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2021-12-06 23:53:23,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:23,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2021-12-06 23:53:23,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 23:53:23,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2021-12-06 23:53:23,020 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 23:53:23,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-12-06 23:53:23,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 23:53:23,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 23:53:23,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 23:53:23,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:53:23,020 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:53:23,020 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:53:23,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:53:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:53:23,021 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) [2021-12-06 23:53:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:23,021 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-06 23:53:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:53:23,021 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-06 23:53:23,021 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 23:53:23,021 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 23:53:23,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 23:53:23,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 23:53:23,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 23:53:23,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:53:23,021 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:53:23,021 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:53:23,021 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:53:23,022 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-06 23:53:23,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 23:53:23,022 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 23:53:23,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 23:53:23,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 11:53:23 BoogieIcfgContainer [2021-12-06 23:53:23,026 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 23:53:23,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:53:23,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:53:23,027 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:53:23,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:53:10" (3/4) ... [2021-12-06 23:53:23,029 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:53:23,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:53:23,029 INFO L158 Benchmark]: Toolchain (without parser) took 13087.69ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.2MB in the beginning and 31.0MB in the end (delta: 25.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-12-06 23:53:23,029 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:53:23,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.32ms. Allocated memory is still 92.3MB. Free memory was 56.0MB in the beginning and 68.8MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:53:23,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.41ms. Allocated memory is still 92.3MB. Free memory was 68.8MB in the beginning and 67.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:53:23,030 INFO L158 Benchmark]: Boogie Preprocessor took 12.22ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 66.6MB in the end (delta: 804.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:53:23,030 INFO L158 Benchmark]: RCFGBuilder took 206.74ms. Allocated memory is still 92.3MB. Free memory was 66.3MB in the beginning and 57.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:53:23,030 INFO L158 Benchmark]: BuchiAutomizer took 12680.26ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.3MB in the beginning and 32.1MB in the end (delta: 25.2MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2021-12-06 23:53:23,031 INFO L158 Benchmark]: Witness Printer took 2.34ms. Allocated memory is still 111.1MB. Free memory was 32.1MB in the beginning and 31.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:53:23,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.32ms. Allocated memory is still 92.3MB. Free memory was 56.0MB in the beginning and 68.8MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.41ms. Allocated memory is still 92.3MB. Free memory was 68.8MB in the beginning and 67.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.22ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 66.6MB in the end (delta: 804.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.74ms. Allocated memory is still 92.3MB. Free memory was 66.3MB in the beginning and 57.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 12680.26ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.3MB in the beginning and 32.1MB in the end (delta: 25.2MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. * Witness Printer took 2.34ms. Allocated memory is still 111.1MB. Free memory was 32.1MB in the beginning and 31.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 12.6s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 9.4s. Construction of modules took 0.6s. Büchi inclusion checks took 2.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 96 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 189 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 652 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 631 mSDsluCounter, 1022 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 779 mSDsCounter, 337 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1833 IncrementalHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 337 mSolverCounterUnsat, 243 mSDtfsCounter, 1833 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf98 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq184 hnf93 smp76 dnf100 smp100 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 21 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 23:53:23,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:23,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:23,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-12-06 23:53:23,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-12-06 23:53:23,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-12-06 23:53:24,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 23:53:24,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-12-06 23:53:24,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 23:53:24,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 23:53:24,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 23:53:25,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c58a06b-301a-44af-876a-3a01e213b5c4/bin/uautomizer-DrprNOufMa/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