./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.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_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/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_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/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_b65351b3-2741-49ff-aec2-3f8a580e1307/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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:49:04,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:49:04,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:49:04,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:49:04,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:49:04,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:49:04,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:49:04,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:49:04,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:49:04,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:49:04,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:49:04,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:49:04,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:49:04,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:49:04,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:49:04,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:49:04,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:49:04,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:49:04,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:49:04,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:49:04,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:49:04,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:49:04,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:49:04,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:49:04,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:49:04,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:49:04,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:49:04,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:49:04,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:49:04,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:49:04,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:49:04,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:49:04,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:49:04,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:49:04,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:49:04,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:49:04,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:49:04,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:49:04,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:49:04,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:49:04,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:49:04,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-06 22:49:04,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:49:04,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:49:04,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:49:04,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:49:04,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:49:04,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:49:04,514 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:49:04,514 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 22:49:04,514 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 22:49:04,514 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 22:49:04,514 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 22:49:04,514 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 22:49:04,514 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 22:49:04,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:49:04,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:49:04,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:49:04,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:49:04,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:49:04,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:49:04,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 22:49:04,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 22:49:04,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 22:49:04,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:49:04,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:49:04,516 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 22:49:04,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:49:04,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 22:49:04,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:49:04,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:49:04,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:49:04,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:49:04,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:49:04,518 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 22:49:04,518 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_b65351b3-2741-49ff-aec2-3f8a580e1307/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2021-12-06 22:49:04,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:49:04,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:49:04,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:49:04,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:49:04,714 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:49:04,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2021-12-06 22:49:04,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/data/58a6f9526/2bb85deb7ffb4da598f8f95697b1114b/FLAG36d7b8032 [2021-12-06 22:49:05,130 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:49:05,130 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2021-12-06 22:49:05,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/data/58a6f9526/2bb85deb7ffb4da598f8f95697b1114b/FLAG36d7b8032 [2021-12-06 22:49:05,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/data/58a6f9526/2bb85deb7ffb4da598f8f95697b1114b [2021-12-06 22:49:05,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:49:05,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:49:05,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:49:05,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:49:05,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:49:05,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d27b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05, skipping insertion in model container [2021-12-06 22:49:05,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:49:05,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:49:05,276 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_b65351b3-2741-49ff-aec2-3f8a580e1307/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2021-12-06 22:49:05,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:49:05,285 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:49:05,296 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_b65351b3-2741-49ff-aec2-3f8a580e1307/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2021-12-06 22:49:05,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:49:05,305 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:49:05,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05 WrapperNode [2021-12-06 22:49:05,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:49:05,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:49:05,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:49:05,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:49:05,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,333 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-06 22:49:05,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:49:05,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:49:05,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:49:05,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:49:05,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:49:05,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:49:05,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:49:05,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:49:05,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (1/1) ... [2021-12-06 22:49:05,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:05,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:05,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:05,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 22:49:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:49:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:49:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-12-06 22:49:05,419 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-12-06 22:49:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-12-06 22:49:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-12-06 22:49:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:49:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:49:05,464 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:49:05,465 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:49:05,527 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:49:05,532 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:49:05,533 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:49:05,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:49:05 BoogieIcfgContainer [2021-12-06 22:49:05,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:49:05,535 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 22:49:05,535 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 22:49:05,538 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 22:49:05,539 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:49:05,539 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 10:49:05" (1/3) ... [2021-12-06 22:49:05,540 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e1734b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:49:05, skipping insertion in model container [2021-12-06 22:49:05,540 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:49:05,540 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:49:05" (2/3) ... [2021-12-06 22:49:05,540 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e1734b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:49:05, skipping insertion in model container [2021-12-06 22:49:05,540 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:49:05,540 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:49:05" (3/3) ... [2021-12-06 22:49:05,541 INFO L388 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2021-12-06 22:49:05,576 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 22:49:05,577 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 22:49:05,577 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 22:49:05,577 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 22:49:05,577 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 22:49:05,577 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 22:49:05,577 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 22:49:05,578 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 22:49:05,589 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 22:49:05,608 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 22:49:05,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:05,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:05,614 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 22:49:05,614 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:05,615 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 22:49:05,615 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 22:49:05,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 22:49:05,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:05,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:05,620 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 22:49:05,620 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:05,625 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 22:49:05,625 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 22:49:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-12-06 22:49:05,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:05,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058866389] [2021-12-06 22:49:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:05,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:05,703 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:05,722 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:05,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:05,725 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-12-06 22:49:05,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:05,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46803402] [2021-12-06 22:49:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:05,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:05,733 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:05,740 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:05,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:05,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-12-06 22:49:05,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:05,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734767121] [2021-12-06 22:49:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:05,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:05,754 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:05,766 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:05,916 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:05,916 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:05,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:05,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:05,917 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:49:05,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:05,917 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:05,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:05,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2021-12-06 22:49:05,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:05,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:05,932 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 22:49:05,937 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 22:49:05,939 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 22:49:05,941 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 22:49:05,942 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 22:49:05,944 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 22:49:05,946 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 22:49:05,947 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 22:49:05,949 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 22:49:05,951 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 22:49:06,003 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:06,004 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:49:06,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 22:49:06,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,047 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,048 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 22:49:06,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:06,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 22:49:06,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,081 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,089 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,090 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 22:49:06,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 22:49:06,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 22:49:06,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,119 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 22:49:06,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:06,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 22:49:06,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,149 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,149 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 22:49:06,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 22:49:06,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 22:49:06,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,178 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,178 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 22:49:06,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:06,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 22:49:06,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,208 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,208 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 22:49:06,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 22:49:06,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 22:49:06,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,237 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,237 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 22:49:06,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 22:49:06,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,257 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 22:49:06,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,266 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,266 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 22:49:06,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:06,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 22:49:06,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,299 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:06,299 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 22:49:06,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 22:49:06,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,318 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 22:49:06,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:06,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:06,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 22:49:06,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:49:06,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:06,406 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:49:06,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 22:49:06,408 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:06,408 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:06,408 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:06,408 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:06,408 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:49:06,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,408 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:06,408 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:06,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2021-12-06 22:49:06,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:06,409 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:06,410 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 22:49:06,412 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 22:49:06,413 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 22:49:06,415 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 22:49:06,416 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 22:49:06,418 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 22:49:06,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:49:06,421 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 22:49:06,425 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 22:49:06,427 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 22:49:06,465 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:06,468 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:49:06,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 22:49:06,471 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 22:49:06,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,484 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:06,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 22:49:06,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 22:49:06,508 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 22:49:06,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,517 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:06,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 22:49:06,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,535 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 22:49:06,537 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 22:49:06,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,546 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:06,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:06,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,565 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 22:49:06,566 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 22:49:06,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,575 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:06,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:06,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,594 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 22:49:06,596 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 22:49:06,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,603 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,605 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:06,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-06 22:49:06,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,624 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 22:49:06,625 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 22:49:06,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,634 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:06,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 22:49:06,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,654 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 22:49:06,655 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 22:49:06,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,663 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,663 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,664 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:06,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-06 22:49:06,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,684 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-06 22:49:06,685 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 22:49:06,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:06,693 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:06,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:06,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:06,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:06,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:06,694 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:06,696 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:49:06,699 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:49:06,699 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 22:49:06,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:06,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:06,705 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:06,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 22:49:06,706 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:49:06,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:49:06,706 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:49:06,706 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-12-06 22:49:06,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-06 22:49:06,727 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:49:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:49:06,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:06,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:49:06,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:06,832 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 22:49:06,855 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 22:49:06,856 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 22:49:06,982 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 22:49:06,983 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 22:49:06,988 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 22:49:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-12-06 22:49:06,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-06 22:49:06,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:06,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-12-06 22:49:06,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:06,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-12-06 22:49:06,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:06,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-12-06 22:49:07,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 22:49:07,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-12-06 22:49:07,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-06 22:49:07,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-12-06 22:49:07,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-12-06 22:49:07,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:07,012 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-12-06 22:49:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-12-06 22:49:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-12-06 22:49:07,039 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 22:49:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-12-06 22:49:07,042 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-12-06 22:49:07,042 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-12-06 22:49:07,042 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 22:49:07,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-12-06 22:49:07,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-06 22:49:07,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 22:49:07,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:07,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:07,051 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:07,051 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:07,051 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 22:49:07,051 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 22:49:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-12-06 22:49:07,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:07,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527132230] [2021-12-06 22:49:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:07,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 22:49:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:07,114 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 22:49:07,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:07,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527132230] [2021-12-06 22:49:07,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527132230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:49:07,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:49:07,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:49:07,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946941585] [2021-12-06 22:49:07,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:49:07,117 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:49:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-12-06 22:49:07,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:07,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69500863] [2021-12-06 22:49:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:07,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:07,152 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 22:49:07,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:07,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69500863] [2021-12-06 22:49:07,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69500863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:49:07,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:49:07,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:49:07,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770971771] [2021-12-06 22:49:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:49:07,154 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:49:07,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:49:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:49:07,158 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 22:49:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:07,207 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-12-06 22:49:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:49:07,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-12-06 22:49:07,212 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 22:49:07,215 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-12-06 22:49:07,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-12-06 22:49:07,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-12-06 22:49:07,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-12-06 22:49:07,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:07,216 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-12-06 22:49:07,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-12-06 22:49:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-12-06 22:49:07,222 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 22:49:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-12-06 22:49:07,223 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-12-06 22:49:07,223 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-12-06 22:49:07,223 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 22:49:07,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-12-06 22:49:07,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-06 22:49:07,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:07,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:07,226 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:07,226 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:07,226 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 22:49:07,226 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 22:49:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:07,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-12-06 22:49:07,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:07,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315663447] [2021-12-06 22:49:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:07,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 22:49:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:07,287 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 22:49:07,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315663447] [2021-12-06 22:49:07,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315663447] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39092608] [2021-12-06 22:49:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:07,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,289 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 22:49:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:07,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:49:07,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:07,356 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 22:49:07,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:07,437 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 22:49:07,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39092608] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:07,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:07,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-06 22:49:07,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490241786] [2021-12-06 22:49:07,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:07,438 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:49:07,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-12-06 22:49:07,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:07,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756430997] [2021-12-06 22:49:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:07,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:07,447 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:07,453 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:07,563 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:07,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:07,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:07,563 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:07,563 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:49:07,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,563 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:07,563 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:07,563 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2021-12-06 22:49:07,563 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:07,563 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:07,564 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 22:49:07,566 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 22:49:07,567 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 22:49:07,568 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 22:49:07,570 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 22:49:07,571 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 22:49:07,575 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 22:49:07,576 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 22:49:07,577 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 22:49:07,602 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:07,602 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:49:07,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,603 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 22:49:07,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:07,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:07,612 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:07,612 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 22:49:07,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 22:49:07,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,631 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 22:49:07,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:07,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:07,640 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:07,640 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 22:49:07,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-06 22:49:07,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,659 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 22:49:07,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:07,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:07,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:07,670 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 22:49:07,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-06 22:49:07,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,689 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-06 22:49:07,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:07,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:07,698 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:07,698 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 22:49:07,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:07,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,717 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-06 22:49:07,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:07,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:07,726 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:07,726 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 22:49:07,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-06 22:49:07,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,745 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-06 22:49:07,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:07,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:07,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-06 22:49:07,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:07,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:07,773 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:07,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-06 22:49:07,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:49:07,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:08,830 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:49:08,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-06 22:49:08,833 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:08,833 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:08,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:08,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:08,833 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:49:08,833 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:08,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:08,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:08,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2021-12-06 22:49:08,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:08,833 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:08,834 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 22:49:08,835 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 22:49:08,837 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 22:49:08,837 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 22:49:08,838 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 22:49:08,842 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 22:49:08,842 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 22:49:08,843 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 22:49:08,844 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 22:49:08,864 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:08,864 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:49:08,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:08,865 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:08,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-06 22:49:08,867 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 22:49:08,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:08,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:08,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:08,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:08,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:08,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:08,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:08,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:08,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-06 22:49:08,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:08,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:08,894 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:08,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-06 22:49:08,895 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 22:49:08,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:08,904 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:08,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:08,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:08,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:08,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:08,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:08,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:08,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:08,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:08,929 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:08,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-06 22:49:08,929 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 22:49:08,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:08,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:08,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:08,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:08,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:08,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:08,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:08,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:08,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-06 22:49:08,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:08,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:08,957 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:08,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-06 22:49:08,962 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 22:49:08,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:08,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:08,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:08,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:08,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:08,970 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:08,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:08,971 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:08,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:08,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:08,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:08,990 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:08,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-06 22:49:08,990 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 22:49:08,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:08,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:08,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:08,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:08,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:08,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:08,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:09,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:49:09,003 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:49:09,003 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 22:49:09,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:09,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:09,004 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:09,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-06 22:49:09,005 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:49:09,005 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:49:09,005 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:49:09,005 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-12-06 22:49:09,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-06 22:49:09,023 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:49:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:49:09,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 22:49:09,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:09,188 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 22:49:09,189 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 22:49:09,189 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 22:49:09,399 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 22:49:09,399 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 22:49:09,399 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 22:49:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-12-06 22:49:09,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-12-06 22:49:09,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:09,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-12-06 22:49:09,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:09,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-12-06 22:49:09,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:09,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-12-06 22:49:09,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 22:49:09,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-12-06 22:49:09,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-12-06 22:49:09,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-12-06 22:49:09,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-12-06 22:49:09,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:09,414 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-12-06 22:49:09,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-12-06 22:49:09,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-12-06 22:49:09,424 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 22:49:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-12-06 22:49:09,426 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-12-06 22:49:09,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 22:49:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:49:09,427 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 22:49:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:09,525 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2021-12-06 22:49:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:49:09,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2021-12-06 22:49:09,531 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 22:49:09,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2021-12-06 22:49:09,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2021-12-06 22:49:09,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2021-12-06 22:49:09,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2021-12-06 22:49:09,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:09,537 INFO L681 BuchiCegarLoop]: Abstraction has 185 states and 246 transitions. [2021-12-06 22:49:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2021-12-06 22:49:09,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2021-12-06 22:49:09,550 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 22:49:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2021-12-06 22:49:09,552 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2021-12-06 22:49:09,552 INFO L587 BuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2021-12-06 22:49:09,552 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 22:49:09,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2021-12-06 22:49:09,553 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 22:49:09,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:09,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:09,557 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 22:49:09,557 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 22:49:09,557 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 22:49:09,557 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 22:49:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-12-06 22:49:09,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:09,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355213694] [2021-12-06 22:49:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:09,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:49:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-06 22:49:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 22:49:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,793 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 22:49:09,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:09,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355213694] [2021-12-06 22:49:09,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355213694] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:09,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331126525] [2021-12-06 22:49:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:09,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:09,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:09,795 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:09,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 22:49:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:09,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:49:09,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:09,954 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 22:49:09,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:10,263 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 22:49:10,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331126525] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:10,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:10,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 31 [2021-12-06 22:49:10,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587116760] [2021-12-06 22:49:10,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:10,265 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:49:10,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:10,265 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-12-06 22:49:10,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:10,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72102525] [2021-12-06 22:49:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:10,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:49:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,331 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 22:49:10,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72102525] [2021-12-06 22:49:10,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72102525] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:10,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368100272] [2021-12-06 22:49:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:10,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:10,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:10,333 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:10,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 22:49:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:49:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:10,441 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 22:49:10,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:10,619 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 22:49:10,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368100272] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:10,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:10,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2021-12-06 22:49:10,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940781889] [2021-12-06 22:49:10,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:10,620 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:49:10,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:49:10,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:49:10,621 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 22:49:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:10,769 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2021-12-06 22:49:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:49:10,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2021-12-06 22:49:10,775 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 22:49:10,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2021-12-06 22:49:10,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2021-12-06 22:49:10,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-12-06 22:49:10,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2021-12-06 22:49:10,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:10,781 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 268 transitions. [2021-12-06 22:49:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2021-12-06 22:49:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2021-12-06 22:49:10,793 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 22:49:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2021-12-06 22:49:10,795 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-12-06 22:49:10,795 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-12-06 22:49:10,795 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 22:49:10,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2021-12-06 22:49:10,797 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-06 22:49:10,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:10,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:10,799 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 22:49:10,799 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 22:49:10,800 INFO L791 eck$LassoCheckResult]: Stem: 2735#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2736#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2765#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2797#fibo1ENTRY ~n := #in~n; 2786#L10 assume !(~n < 1); 2781#L12 assume !(1 == ~n); 2741#L15 call #t~ret4 := fibo2(~n - 1);< 2789#fibo2ENTRY ~n := #in~n; 2791#L20 assume !(~n < 1); 2740#L22 assume !(1 == ~n); 2742#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2807#L12 assume !(1 == ~n); 2752#L15 call #t~ret4 := fibo2(~n - 1);< 2802#fibo2ENTRY ~n := #in~n; 2828#L20 assume !(~n < 1); 2827#L22 assume !(1 == ~n); 2772#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2811#L10 assume !(~n < 1); 2838#L12 assume 1 == ~n;#res := 1; 2839#fibo1FINAL assume true; 2908#fibo1EXIT >#46#return; 2751#L25-1 call #t~ret7 := fibo1(~n - 2);< 2754#fibo1ENTRY ~n := #in~n; 2914#L10 assume ~n < 1;#res := 0; 2912#fibo1FINAL assume true; 2910#fibo1EXIT >#48#return; 2774#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2775#fibo2FINAL assume true; 2782#fibo2EXIT >#50#return; 2851#L15-1 [2021-12-06 22:49:10,800 INFO L793 eck$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 22:49:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-12-06 22:49:10,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:10,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649460610] [2021-12-06 22:49:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:10,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:10,808 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:10,816 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:10,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-12-06 22:49:10,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:10,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306552824] [2021-12-06 22:49:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:10,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:49:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,913 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 22:49:10,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:10,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306552824] [2021-12-06 22:49:10,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306552824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:10,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056944856] [2021-12-06 22:49:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:10,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:10,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:10,915 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:10,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 22:49:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:10,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:49:10,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:11,033 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 22:49:11,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:11,256 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 22:49:11,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056944856] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:11,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:11,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2021-12-06 22:49:11,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888989782] [2021-12-06 22:49:11,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:11,257 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:49:11,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:49:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:49:11,258 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 22:49:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:11,404 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2021-12-06 22:49:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:49:11,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2021-12-06 22:49:11,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-06 22:49:11,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2021-12-06 22:49:11,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2021-12-06 22:49:11,409 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2021-12-06 22:49:11,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2021-12-06 22:49:11,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:11,409 INFO L681 BuchiCegarLoop]: Abstraction has 106 states and 132 transitions. [2021-12-06 22:49:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2021-12-06 22:49:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-12-06 22:49:11,414 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 22:49:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2021-12-06 22:49:11,415 INFO L704 BuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-12-06 22:49:11,415 INFO L587 BuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-12-06 22:49:11,415 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 22:49:11,415 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2021-12-06 22:49:11,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-06 22:49:11,416 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:11,416 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:11,418 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 22:49:11,418 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 22:49:11,418 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 22:49:11,418 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 22:49:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2021-12-06 22:49:11,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:11,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379399796] [2021-12-06 22:49:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:11,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:11,426 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:11,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2021-12-06 22:49:11,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:11,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131587169] [2021-12-06 22:49:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:11,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:11,441 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:11,447 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2021-12-06 22:49:11,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:11,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727007699] [2021-12-06 22:49:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:11,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:49:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:49:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,519 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 22:49:11,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:11,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727007699] [2021-12-06 22:49:11,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727007699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:11,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963902454] [2021-12-06 22:49:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:11,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:11,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:11,520 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:11,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 22:49:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:11,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:49:11,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:11,617 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 22:49:11,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:11,682 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 22:49:11,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963902454] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:11,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:11,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2021-12-06 22:49:11,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460110737] [2021-12-06 22:49:11,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:11,875 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:11,875 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:11,875 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:11,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:11,875 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:49:11,875 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:11,875 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:11,875 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:11,875 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2021-12-06 22:49:11,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:11,875 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:11,876 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 22:49:11,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:49:11,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:49:11,878 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 22:49:11,883 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 22:49:11,884 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 22:49:11,885 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 22:49:11,886 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 22:49:11,886 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 22:49:11,917 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:11,917 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:49:11,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:11,918 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:11,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-06 22:49:11,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:11,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:11,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:11,929 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 22:49:11,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-06 22:49:11,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:11,947 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:11,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-06 22:49:11,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:11,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:11,956 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:11,956 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 22:49:11,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-06 22:49:11,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:11,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:11,975 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:11,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-06 22:49:11,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:11,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:11,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:11,985 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 22:49:12,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-06 22:49:12,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:12,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:12,003 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:12,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-06 22:49:12,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:12,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:12,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:12,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:12,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:12,032 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:12,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-06 22:49:12,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:49:12,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:13,280 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:49:13,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-12-06 22:49:13,283 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:13,283 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:13,283 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:13,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:13,283 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:49:13,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:13,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:13,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:13,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2021-12-06 22:49:13,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:13,283 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:13,284 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 22:49:13,285 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 22:49:13,286 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 22:49:13,291 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 22:49:13,292 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 22:49:13,292 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 22:49:13,293 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 22:49:13,294 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 22:49:13,295 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 22:49:13,330 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:13,330 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:49:13,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:13,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:13,331 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:13,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-06 22:49:13,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 22:49:13,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:13,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:13,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:13,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:13,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:13,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:13,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:13,340 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:13,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-06 22:49:13,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:13,359 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:13,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-06 22:49:13,361 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 22:49:13,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:13,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:13,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:13,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:13,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:13,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:13,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:13,370 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:13,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-12-06 22:49:13,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:13,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:13,388 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:13,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-06 22:49:13,390 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 22:49:13,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:13,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:13,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:13,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:13,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:13,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:13,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:13,401 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:49:13,402 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-06 22:49:13,402 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:49:13,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:13,403 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:13,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-06 22:49:13,404 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:49:13,404 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:49:13,404 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:49:13,404 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-12-06 22:49:13,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-06 22:49:13,423 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:49:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:49:13,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:13,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-06 22:49:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:13,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 22:49:13,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:13,739 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 22:49:13,740 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 22:49:13,740 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 22:49:13,949 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 22:49:13,950 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 22:49:13,951 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 22:49:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2021-12-06 22:49:13,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2021-12-06 22:49:13,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:13,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2021-12-06 22:49:13,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:13,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2021-12-06 22:49:13,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:13,955 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2021-12-06 22:49:13,961 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2021-12-06 22:49:13,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2021-12-06 22:49:13,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2021-12-06 22:49:13,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2021-12-06 22:49:13,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2021-12-06 22:49:13,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:13,966 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 395 transitions. [2021-12-06 22:49:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2021-12-06 22:49:13,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2021-12-06 22:49:13,976 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 22:49:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2021-12-06 22:49:13,978 INFO L704 BuchiCegarLoop]: Abstraction has 266 states and 357 transitions. [2021-12-06 22:49:13,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:49:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:49:13,979 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 22:49:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:14,064 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2021-12-06 22:49:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:49:14,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2021-12-06 22:49:14,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-06 22:49:14,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2021-12-06 22:49:14,068 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-12-06 22:49:14,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-12-06 22:49:14,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2021-12-06 22:49:14,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:14,068 INFO L681 BuchiCegarLoop]: Abstraction has 122 states and 145 transitions. [2021-12-06 22:49:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2021-12-06 22:49:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2021-12-06 22:49:14,071 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 22:49:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-12-06 22:49:14,072 INFO L704 BuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-12-06 22:49:14,072 INFO L587 BuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-12-06 22:49:14,072 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 22:49:14,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2021-12-06 22:49:14,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-06 22:49:14,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:14,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:14,080 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 22:49:14,080 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 22:49:14,080 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 22:49:14,081 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 22:49:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2021-12-06 22:49:14,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:14,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141050559] [2021-12-06 22:49:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:14,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:49:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:49:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,178 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 22:49:14,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:14,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141050559] [2021-12-06 22:49:14,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141050559] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:14,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34685062] [2021-12-06 22:49:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:14,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:14,180 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-06 22:49:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:49:14,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:14,266 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 22:49:14,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:14,374 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 22:49:14,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34685062] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:14,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:14,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2021-12-06 22:49:14,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33862320] [2021-12-06 22:49:14,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:14,374 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:49:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2021-12-06 22:49:14,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:14,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389765201] [2021-12-06 22:49:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:14,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:49:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,422 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 22:49:14,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:14,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389765201] [2021-12-06 22:49:14,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389765201] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:14,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950020073] [2021-12-06 22:49:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:14,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:14,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:14,423 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:14,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-12-06 22:49:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:49:14,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:14,499 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 22:49:14,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:14,638 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 22:49:14,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950020073] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:14,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:14,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-12-06 22:49:14,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321197313] [2021-12-06 22:49:14,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:14,639 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:49:14,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:14,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:49:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:49:14,639 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 22:49:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:14,704 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2021-12-06 22:49:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:49:14,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2021-12-06 22:49:14,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-06 22:49:14,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2021-12-06 22:49:14,708 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-12-06 22:49:14,708 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-12-06 22:49:14,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2021-12-06 22:49:14,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:14,708 INFO L681 BuchiCegarLoop]: Abstraction has 122 states and 143 transitions. [2021-12-06 22:49:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2021-12-06 22:49:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-12-06 22:49:14,712 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 22:49:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-12-06 22:49:14,713 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-06 22:49:14,713 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-06 22:49:14,713 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-06 22:49:14,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2021-12-06 22:49:14,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-06 22:49:14,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:14,715 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:14,717 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 22:49:14,717 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 22:49:14,717 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 22:49:14,717 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 22:49:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2021-12-06 22:49:14,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:14,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579438892] [2021-12-06 22:49:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:14,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:49:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:49:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,807 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 22:49:14,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:14,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579438892] [2021-12-06 22:49:14,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579438892] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:14,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684717230] [2021-12-06 22:49:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:14,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:14,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:14,808 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:14,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-06 22:49:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:14,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:49:14,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:14,899 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 22:49:14,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:15,011 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 22:49:15,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684717230] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:15,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:15,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2021-12-06 22:49:15,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438083512] [2021-12-06 22:49:15,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:15,011 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:49:15,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2021-12-06 22:49:15,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:15,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732712692] [2021-12-06 22:49:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:15,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:49:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:49:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:49:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,082 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 22:49:15,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:15,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732712692] [2021-12-06 22:49:15,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732712692] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:15,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129706847] [2021-12-06 22:49:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:15,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:15,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,083 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-12-06 22:49:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:49:15,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:15,178 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 22:49:15,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:15,355 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 22:49:15,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129706847] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:15,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:15,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-12-06 22:49:15,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012161133] [2021-12-06 22:49:15,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:15,356 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:49:15,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:49:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:49:15,356 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 22:49:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:15,522 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-12-06 22:49:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 22:49:15,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2021-12-06 22:49:15,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 22:49:15,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2021-12-06 22:49:15,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-12-06 22:49:15,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-12-06 22:49:15,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2021-12-06 22:49:15,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:49:15,525 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-06 22:49:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2021-12-06 22:49:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 22:49:15,527 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 22:49:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-12-06 22:49:15,527 INFO L704 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-06 22:49:15,527 INFO L587 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-06 22:49:15,527 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-06 22:49:15,527 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2021-12-06 22:49:15,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 22:49:15,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:49:15,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:49:15,528 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 22:49:15,528 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:49:15,528 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 22:49:15,528 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 22:49:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2021-12-06 22:49:15,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:15,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208799399] [2021-12-06 22:49:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:15,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:15,534 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:15,540 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:15,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2021-12-06 22:49:15,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:15,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860632364] [2021-12-06 22:49:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:15,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:15,542 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:49:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:49:15,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:49:15,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2021-12-06 22:49:15,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:15,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115608926] [2021-12-06 22:49:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:15,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 22:49:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:49:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:49:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:49:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:15,607 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 22:49:15,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:15,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115608926] [2021-12-06 22:49:15,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115608926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:15,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299075849] [2021-12-06 22:49:15,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:49:15,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,608 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-12-06 22:49:15,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 22:49:15,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:49:15,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:49:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:15,704 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 22:49:15,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:15,751 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 22:49:15,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299075849] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:15,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:15,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2021-12-06 22:49:15,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073687934] [2021-12-06 22:49:15,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:15,815 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:15,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:15,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:15,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:15,816 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:49:15,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:15,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:15,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:15,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2021-12-06 22:49:15,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:15,816 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:15,816 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 22:49:15,818 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 22:49:15,819 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 22:49:15,820 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 22:49:15,821 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 22:49:15,825 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 22:49:15,826 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 22:49:15,827 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 22:49:15,828 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 22:49:15,850 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:15,850 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:49:15,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:15,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,851 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-06 22:49:15,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:15,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:15,860 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:15,860 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 22:49:15,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-06 22:49:15,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,879 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-06 22:49:15,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:15,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:15,888 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:15,888 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 22:49:15,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-12-06 22:49:15,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,907 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-06 22:49:15,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:15,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:15,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:15,916 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 22:49:15,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:15,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,935 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-06 22:49:15,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:15,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:15,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:49:15,944 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 22:49:15,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-12-06 22:49:15,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:15,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,963 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-06 22:49:15,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:49:15,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:15,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-12-06 22:49:15,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:15,996 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:15,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-06 22:49:15,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:49:15,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:49:16,877 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:49:16,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:16,880 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:49:16,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:49:16,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:49:16,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:49:16,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:49:16,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:16,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:49:16,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:49:16,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2021-12-06 22:49:16,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:49:16,880 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:49:16,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:49:16,882 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 22:49:16,883 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 22:49:16,884 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 22:49:16,885 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 22:49:16,885 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 22:49:16,886 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 22:49:16,887 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 22:49:16,887 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 22:49:16,911 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:49:16,912 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:49:16,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:16,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:16,913 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:16,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-06 22:49:16,914 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 22:49:16,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:16,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:16,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:16,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:16,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:16,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:16,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:16,922 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:16,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-12-06 22:49:16,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:16,941 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:16,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-06 22:49:16,942 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 22:49:16,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:16,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:16,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:16,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:16,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:16,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:16,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:16,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:16,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-12-06 22:49:16,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:16,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:16,969 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:16,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-06 22:49:16,970 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 22:49:16,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:16,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:16,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:16,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:16,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:16,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:16,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:16,978 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:16,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-12-06 22:49:16,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:16,997 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:16,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-06 22:49:16,998 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 22:49:17,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:17,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:17,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:17,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:17,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:17,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:17,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:17,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:17,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:17,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:17,025 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:17,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-12-06 22:49:17,026 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 22:49:17,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:17,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:17,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:17,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:17,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:17,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:17,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:17,035 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:17,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-12-06 22:49:17,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:17,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:17,054 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:17,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-12-06 22:49:17,055 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 22:49:17,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:17,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:17,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:17,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:17,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:17,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:17,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:17,064 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:17,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-12-06 22:49:17,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:17,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:17,082 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:17,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-12-06 22:49:17,084 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 22:49:17,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:17,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:17,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:17,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:17,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:17,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:17,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:17,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:17,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:17,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:17,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:17,111 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:17,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-12-06 22:49:17,113 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 22:49:17,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:17,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:17,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:17,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:17,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:17,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:17,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:17,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:49:17,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-12-06 22:49:17,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:17,140 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:17,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-12-06 22:49:17,141 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 22:49:17,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:49:17,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:49:17,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:49:17,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:49:17,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:49:17,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:49:17,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:49:17,150 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:49:17,153 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:49:17,153 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 22:49:17,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:49:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:17,154 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:49:17,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-06 22:49:17,155 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:49:17,155 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:49:17,155 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:49:17,155 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-12-06 22:49:17,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-12-06 22:49:17,173 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:49:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:17,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:49:17,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:17,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-12-06 22:49:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:17,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:49:17,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:17,463 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 22:49:17,464 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 22:49:17,464 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 22:49:17,507 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 22:49:17,507 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 22:49:17,508 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 22:49:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-12-06 22:49:17,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-06 22:49:17,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:17,508 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:49:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:17,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:49:17,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:17,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:49:17,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:17,790 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 22:49:17,790 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 22:49:17,790 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 22:49:17,829 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 22:49:17,829 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 22:49:17,830 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 22:49:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-12-06 22:49:17,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-06 22:49:17,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:17,830 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:49:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:17,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:49:17,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:18,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:49:18,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:18,086 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 22:49:18,086 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 22:49:18,086 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 22:49:18,148 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 22:49:18,148 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 22:49:18,149 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 22:49:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2021-12-06 22:49:18,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-06 22:49:18,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:18,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2021-12-06 22:49:18,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:18,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2021-12-06 22:49:18,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:49:18,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2021-12-06 22:49:18,152 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:49:18,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-12-06 22:49:18,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 22:49:18,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 22:49:18,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 22:49:18,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:49:18,152 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:49:18,152 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:49:18,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:49:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:49:18,153 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 22:49:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:18,153 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-06 22:49:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:49:18,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-06 22:49:18,153 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:49:18,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:49:18,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 22:49:18,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 22:49:18,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 22:49:18,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:49:18,153 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:49:18,153 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:49:18,153 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:49:18,153 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-06 22:49:18,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:49:18,154 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:49:18,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 22:49:18,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 10:49:18 BoogieIcfgContainer [2021-12-06 22:49:18,158 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 22:49:18,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:49:18,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:49:18,159 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:49:18,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:49:05" (3/4) ... [2021-12-06 22:49:18,161 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 22:49:18,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:49:18,161 INFO L158 Benchmark]: Toolchain (without parser) took 13011.27ms. Allocated memory was 79.7MB in the beginning and 132.1MB in the end (delta: 52.4MB). Free memory was 43.7MB in the beginning and 70.5MB in the end (delta: -26.8MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-12-06 22:49:18,161 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 79.7MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:49:18,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.30ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 34.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:49:18,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.13ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 33.9MB in the beginning and 87.4MB in the end (delta: -53.6MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-06 22:49:18,162 INFO L158 Benchmark]: Boogie Preprocessor took 14.27ms. Allocated memory is still 109.1MB. Free memory was 87.4MB in the beginning and 86.5MB in the end (delta: 916.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:49:18,162 INFO L158 Benchmark]: RCFGBuilder took 185.30ms. Allocated memory is still 109.1MB. Free memory was 86.4MB in the beginning and 79.1MB in the end (delta: 7.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-12-06 22:49:18,163 INFO L158 Benchmark]: BuchiAutomizer took 12623.13ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 79.1MB in the beginning and 71.5MB in the end (delta: 7.6MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2021-12-06 22:49:18,163 INFO L158 Benchmark]: Witness Printer took 2.40ms. Allocated memory is still 132.1MB. Free memory was 71.5MB in the beginning and 70.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:49:18,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 79.7MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.30ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 34.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.13ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 33.9MB in the beginning and 87.4MB in the end (delta: -53.6MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.27ms. Allocated memory is still 109.1MB. Free memory was 87.4MB in the beginning and 86.5MB in the end (delta: 916.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 185.30ms. Allocated memory is still 109.1MB. Free memory was 86.4MB in the beginning and 79.1MB in the end (delta: 7.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 12623.13ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 79.1MB in the beginning and 71.5MB in the end (delta: 7.6MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Witness Printer took 2.40ms. Allocated memory is still 132.1MB. Free memory was 71.5MB in the beginning and 70.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.5s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 9.3s. 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: 3.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 22:49:18,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-12-06 22:49:18,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-12-06 22:49:18,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-12-06 22:49:18,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-12-06 22:49:19,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-12-06 22:49:19,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 22:49:19,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-12-06 22:49:19,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 22:49:19,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 22:49:19,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 22:49:20,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65351b3-2741-49ff-aec2-3f8a580e1307/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