./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G --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 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:54:39,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:54:39,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:54:39,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:54:39,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:54:39,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:54:39,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:54:39,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:54:39,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:54:39,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:54:39,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:54:39,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:54:39,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:54:39,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:54:39,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:54:39,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:54:39,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:54:39,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:54:39,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:54:39,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:54:39,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:54:39,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:54:39,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:54:39,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:54:39,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:54:39,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:54:39,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:54:39,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:54:39,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:54:39,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:54:39,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:54:39,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:54:39,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:54:39,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:54:39,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:54:39,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:54:39,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:54:39,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:54:40,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:54:40,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:54:40,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:54:40,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-23 13:54:40,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:54:40,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:54:40,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:54:40,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:54:40,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:54:40,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:54:40,070 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:54:40,070 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:54:40,070 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:54:40,071 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:54:40,071 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:54:40,071 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:54:40,071 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:54:40,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:54:40,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:54:40,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:54:40,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:54:40,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:54:40,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:54:40,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:54:40,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:54:40,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:54:40,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:54:40,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:54:40,077 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:54:40,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:54:40,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:54:40,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:54:40,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:54:40,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:54:40,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:54:40,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:54:40,084 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:54:40,085 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_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2021-11-23 13:54:40,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:54:40,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:54:40,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:54:40,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:54:40,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:54:40,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-11-23 13:54:40,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/data/2aff418c8/82ec7f0443514817b6ee8afe3b9a8b36/FLAGc2827dc2c [2021-11-23 13:54:41,286 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:54:41,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-11-23 13:54:41,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/data/2aff418c8/82ec7f0443514817b6ee8afe3b9a8b36/FLAGc2827dc2c [2021-11-23 13:54:41,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/data/2aff418c8/82ec7f0443514817b6ee8afe3b9a8b36 [2021-11-23 13:54:41,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:54:41,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:54:41,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:54:41,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:54:41,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:54:41,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:41,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0b49d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41, skipping insertion in model container [2021-11-23 13:54:41,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:41,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:54:41,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:54:41,896 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_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-11-23 13:54:41,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:54:41,914 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:54:41,934 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_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-11-23 13:54:41,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:54:41,952 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:54:41,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41 WrapperNode [2021-11-23 13:54:41,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:54:41,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:54:41,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:54:41,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:54:41,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:41,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:41,990 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-11-23 13:54:41,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:54:41,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:54:41,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:54:41,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:54:42,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:54:42,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:54:42,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:54:42,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:54:42,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (1/1) ... [2021-11-23 13:54:42,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:42,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:42,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:42,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:54:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:54:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:54:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-11-23 13:54:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-11-23 13:54:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-11-23 13:54:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-11-23 13:54:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:54:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:54:42,228 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:54:42,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:54:42,406 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:54:42,414 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:54:42,414 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:54:42,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:42 BoogieIcfgContainer [2021-11-23 13:54:42,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:54:42,418 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:54:42,418 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:54:42,427 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:54:42,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:54:42,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:54:41" (1/3) ... [2021-11-23 13:54:42,431 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68c17093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:54:42, skipping insertion in model container [2021-11-23 13:54:42,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:54:42,431 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:41" (2/3) ... [2021-11-23 13:54:42,432 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68c17093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:54:42, skipping insertion in model container [2021-11-23 13:54:42,432 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:54:42,432 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:42" (3/3) ... [2021-11-23 13:54:42,434 INFO L388 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-1.c [2021-11-23 13:54:42,525 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:54:42,525 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:54:42,525 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:54:42,526 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:54:42,526 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:54:42,526 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:54:42,526 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:54:42,526 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:54:42,546 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) [2021-11-23 13:54:42,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:54:42,577 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:54:42,577 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:54:42,586 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 13:54:42,586 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:42,587 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:54:42,587 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) [2021-11-23 13:54:42,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:54:42,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:54:42,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:54:42,598 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 13:54:42,613 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:42,621 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 := 8; 15#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5#fibo1ENTRYtrue [2021-11-23 13:54:42,622 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 [2021-11-23 13:54:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-11-23 13:54:42,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:42,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044038627] [2021-11-23 13:54:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:42,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:42,782 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:54:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:42,831 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:54:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-11-23 13:54:42,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:42,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631440355] [2021-11-23 13:54:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:42,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:42,862 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:54:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:42,879 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:54:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-11-23 13:54:42,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:42,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583308812] [2021-11-23 13:54:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:42,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:42,926 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:54:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:42,950 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:54:43,278 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:54:43,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:54:43,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:54:43,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:54:43,280 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:54:43,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:43,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:54:43,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:54:43,281 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-11-23 13:54:43,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:54:43,281 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:54:43,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:43,487 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:54:43,488 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:54:43,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:43,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:43,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:43,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:54:43,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:43,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:43,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:43,620 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:43,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:43,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:43,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:43,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:43,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:43,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:43,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:54:43,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:43,714 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:43,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:43,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:43,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:43,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:43,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:43,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:54:43,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:43,800 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:43,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:43,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:43,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:43,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:43,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:43,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:43,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:54:43,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:43,886 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:43,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:43,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:43,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:43,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:43,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:43,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:43,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:54:43,969 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:43,970 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:44,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:44,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:44,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:54:44,050 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:44,050 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:44,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,102 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:44,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:44,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:54:44,133 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:44,134 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:44,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:44,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:44,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:54:44,217 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:44,218 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:44,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:44,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:44,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 13:54:44,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:44,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:44,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:44,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:44,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 13:54:44,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,463 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:54:44,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:44,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-23 13:54:44,583 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:54:44,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,590 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:54:44,591 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:54:44,591 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:54:44,591 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:54:44,591 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:54:44,591 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,591 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:54:44,591 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:54:44,591 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-11-23 13:54:44,591 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:54:44,592 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:54:44,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:44,703 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:54:44,708 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:54:44,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,712 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,719 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 [2021-11-23 13:54:44,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:44,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:44,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:44,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:44,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:44,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:44,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:44,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-23 13:54:44,749 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:44,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-23 13:54:44,806 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 [2021-11-23 13:54:44,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:44,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:44,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:44,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:44,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:44,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:44,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:44,833 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:44,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,871 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-23 13:54:44,879 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 [2021-11-23 13:54:44,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:44,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:44,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:44,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:44,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:44,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:44,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:44,901 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:44,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,931 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-23 13:54:44,935 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 [2021-11-23 13:54:44,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:44,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:44,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:44,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:44,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:44,947 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:44,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:44,956 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:44,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:44,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:44,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:44,994 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:44,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-23 13:54:44,997 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 [2021-11-23 13:54:45,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:45,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:45,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:45,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:45,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:45,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:45,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:45,023 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:45,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:45,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:45,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:45,052 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:45,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-23 13:54:45,057 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 [2021-11-23 13:54:45,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:45,066 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:45,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:45,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:45,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:45,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:45,067 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:45,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:45,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:45,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:45,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:45,121 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:45,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-23 13:54:45,132 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 [2021-11-23 13:54:45,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:45,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:45,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:45,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:45,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:45,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:45,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:45,154 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:45,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:45,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:45,191 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:45,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-23 13:54:45,195 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 [2021-11-23 13:54:45,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:45,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:45,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:45,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:45,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:45,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:45,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:45,216 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:54:45,223 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:54:45,223 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:54:45,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:45,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:45,227 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:45,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-23 13:54:45,250 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:54:45,251 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:54:45,251 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:54:45,252 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-11-23 13:54:45,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:45,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:54:45,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:45,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:54:45,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:45,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:54:45,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:45,513 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 [2021-11-23 13:54:45,515 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) [2021-11-23 13:54:45,738 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. [2021-11-23 13:54:45,740 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 [2021-11-23 13:54:45,747 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) [2021-11-23 13:54:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-11-23 13:54:45,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-11-23 13:54:45,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:45,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-11-23 13:54:45,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:45,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-11-23 13:54:45,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:45,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-11-23 13:54:45,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:54:45,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-11-23 13:54:45,779 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-11-23 13:54:45,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-11-23 13:54:45,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-11-23 13:54:45,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:54:45,783 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-11-23 13:54:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-11-23 13:54:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-11-23 13:54:45,824 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) [2021-11-23 13:54:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-11-23 13:54:45,828 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-23 13:54:45,828 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-23 13:54:45,828 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:54:45,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-11-23 13:54:45,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:54:45,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:54:45,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:54:45,833 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:45,834 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:45,834 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 := 8; 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 [2021-11-23 13:54:45,835 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 [2021-11-23 13:54:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-11-23 13:54:45,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:45,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686260308] [2021-11-23 13:54:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:45,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-23 13:54:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:54:45,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:45,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686260308] [2021-11-23 13:54:45,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686260308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:45,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:45,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:54:45,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962527854] [2021-11-23 13:54:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:45,968 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:54:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-11-23 13:54:45,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:45,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773463155] [2021-11-23 13:54:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:45,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-23 13:54:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:54:46,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:46,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773463155] [2021-11-23 13:54:46,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773463155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:46,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:46,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:54:46,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582592901] [2021-11-23 13:54:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:46,056 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 13:54:46,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:54:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:54:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:54:46,063 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) [2021-11-23 13:54:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:46,178 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-11-23 13:54:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:54:46,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-11-23 13:54:46,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:54:46,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-11-23 13:54:46,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-11-23 13:54:46,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-11-23 13:54:46,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-11-23 13:54:46,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:54:46,204 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-11-23 13:54:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-11-23 13:54:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-11-23 13:54:46,213 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) [2021-11-23 13:54:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-11-23 13:54:46,215 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-11-23 13:54:46,215 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-11-23 13:54:46,215 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 13:54:46,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-11-23 13:54:46,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:54:46,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:54:46,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:54:46,219 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:46,220 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:46,220 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 := 8; 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 [2021-11-23 13:54:46,220 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 [2021-11-23 13:54:46,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-11-23 13:54:46,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:46,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744412046] [2021-11-23 13:54:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:46,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-23 13:54:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:46,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:46,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744412046] [2021-11-23 13:54:46,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744412046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:46,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708737851] [2021-11-23 13:54:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:46,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:46,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:46,357 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:46,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-23 13:54:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:46,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:54:46,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:46,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:46,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:46,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708737851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:54:46,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:54:46,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-23 13:54:46,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710876968] [2021-11-23 13:54:46,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:54:46,792 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:54:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-11-23 13:54:46,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:46,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748418245] [2021-11-23 13:54:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:46,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:46,829 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:54:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:46,843 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:54:47,143 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:54:47,143 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:54:47,143 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:54:47,143 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:54:47,143 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:54:47,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:54:47,144 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:54:47,144 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-11-23 13:54:47,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:54:47,144 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:54:47,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:47,249 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:54:47,250 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:54:47,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:47,253 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:47,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:47,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:47,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-23 13:54:47,282 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:47,282 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:47,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:47,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:47,326 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:47,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:47,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:47,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-23 13:54:47,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:47,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:47,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:47,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:47,410 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:47,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:47,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:47,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-23 13:54:47,433 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:47,433 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:47,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:47,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:47,482 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:47,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:47,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:47,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-23 13:54:47,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:47,503 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:47,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:47,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:47,551 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:47,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:47,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:47,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-23 13:54:47,569 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:47,569 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:47,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:47,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:47,600 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:47,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:47,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:47,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-23 13:54:47,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:47,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:47,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:47,688 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:47,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:54:47,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:47,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-23 13:54:49,200 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:54:49,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:49,204 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:54:49,204 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:54:49,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:54:49,204 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:54:49,204 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:54:49,204 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:49,205 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:54:49,205 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:54:49,205 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-11-23 13:54:49,205 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:54:49,205 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:54:49,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:49,301 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:54:49,301 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:54:49,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:49,303 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:49,310 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 [2021-11-23 13:54:49,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:49,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:49,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:49,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:49,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:49,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:49,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:49,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-23 13:54:49,337 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:49,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-11-23 13:54:49,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:49,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:49,374 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:49,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-23 13:54:49,376 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 [2021-11-23 13:54:49,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:49,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:49,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:49,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:49,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:49,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:49,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:49,417 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:49,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:49,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:49,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:49,465 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:49,470 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 [2021-11-23 13:54:49,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:49,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:49,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:49,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:49,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:49,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:49,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:49,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-23 13:54:49,497 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:49,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:49,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:49,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:49,546 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:49,548 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 [2021-11-23 13:54:49,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:49,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:49,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:49,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:49,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:49,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:49,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:49,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-23 13:54:49,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:49,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-11-23 13:54:49,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:49,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:49,589 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:49,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-23 13:54:49,605 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 [2021-11-23 13:54:49,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:49,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:49,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:49,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:49,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:49,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:49,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:49,635 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:54:49,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:54:49,639 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:54:49,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:49,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:49,641 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:49,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:54:49,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:54:49,645 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:54:49,645 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-11-23 13:54:49,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-23 13:54:49,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:49,672 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:54:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:49,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:54:49,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:49,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:54:49,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:50,077 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 [2021-11-23 13:54:50,078 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) [2021-11-23 13:54:50,640 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. [2021-11-23 13:54:50,641 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 [2021-11-23 13:54:50,642 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) [2021-11-23 13:54:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-11-23 13:54:50,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-11-23 13:54:50,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:50,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-11-23 13:54:50,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:50,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-11-23 13:54:50,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:50,647 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-11-23 13:54:50,655 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-23 13:54:50,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-11-23 13:54:50,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-11-23 13:54:50,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-11-23 13:54:50,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-11-23 13:54:50,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:54:50,667 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-11-23 13:54:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-11-23 13:54:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-11-23 13:54:50,689 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) [2021-11-23 13:54:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-11-23 13:54:50,692 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-11-23 13:54:50,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:54:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:54:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:54:50,694 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) [2021-11-23 13:54:50,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:51,030 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2021-11-23 13:54:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:54:51,031 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2021-11-23 13:54:51,038 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-23 13:54:51,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2021-11-23 13:54:51,046 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2021-11-23 13:54:51,047 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-11-23 13:54:51,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2021-11-23 13:54:51,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:54:51,047 INFO L681 BuchiCegarLoop]: Abstraction has 204 states and 272 transitions. [2021-11-23 13:54:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2021-11-23 13:54:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-11-23 13:54:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2021-11-23 13:54:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2021-11-23 13:54:51,091 INFO L704 BuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-23 13:54:51,091 INFO L587 BuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-23 13:54:51,091 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 13:54:51,091 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2021-11-23 13:54:51,095 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-23 13:54:51,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:54:51,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:54:51,098 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:51,098 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:51,098 INFO L791 eck$LassoCheckResult]: Stem: 1241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1276#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1313#fibo1ENTRY ~n := #in~n; 1350#L10 assume !(~n < 1); 1349#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1348#fibo2ENTRY ~n := #in~n; 1347#L20 assume !(~n < 1); 1346#L22 assume !(1 == ~n); 1271#L25 call #t~ret6 := fibo1(~n - 1);< 1270#fibo1ENTRY ~n := #in~n; 1272#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1299#fibo2ENTRY ~n := #in~n; 1426#L20 assume !(~n < 1); 1425#L22 assume !(1 == ~n); 1280#L25 call #t~ret6 := fibo1(~n - 1);< 1344#fibo1ENTRY ~n := #in~n; 1345#L10 assume !(~n < 1); 1355#L12 assume !(1 == ~n); 1356#L15 call #t~ret4 := fibo2(~n - 1);< 1364#fibo2ENTRY ~n := #in~n; 1368#L20 assume ~n < 1;#res := 0; 1367#fibo2FINAL assume true; 1363#fibo2EXIT >#50#return; 1360#L15-1 call #t~ret5 := fibo2(~n - 2);< 1361#fibo2ENTRY ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1362#fibo2FINAL assume true; 1359#fibo2EXIT >#52#return; 1357#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1358#fibo1FINAL assume true; 1424#fibo1EXIT >#46#return; 1332#L25-1 call #t~ret7 := fibo1(~n - 2);< 1343#fibo1ENTRY ~n := #in~n; 1376#L10 assume ~n < 1;#res := 0; 1431#fibo1FINAL assume true; 1422#fibo1EXIT >#48#return; 1420#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1419#fibo2FINAL assume true; 1416#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1298#fibo2ENTRY [2021-11-23 13:54:51,099 INFO L793 eck$LassoCheckResult]: Loop: 1298#fibo2ENTRY ~n := #in~n; 1429#L20 assume !(~n < 1); 1243#L22 assume !(1 == ~n); 1248#L25 call #t~ret6 := fibo1(~n - 1);< 1265#fibo1ENTRY ~n := #in~n; 1269#L10 assume !(~n < 1); 1290#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1298#fibo2ENTRY [2021-11-23 13:54:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:51,099 INFO L85 PathProgramCache]: Analyzing trace with hash -960039395, now seen corresponding path program 1 times [2021-11-23 13:54:51,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:51,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129780299] [2021-11-23 13:54:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:51,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-23 13:54:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:51,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:54:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:51,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:54:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-23 13:54:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:51,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-23 13:54:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 13:54:51,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:51,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129780299] [2021-11-23 13:54:51,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129780299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:51,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317818884] [2021-11-23 13:54:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:51,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:51,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:51,270 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:51,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-23 13:54:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:51,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 13:54:51,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:54:51,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:54:52,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317818884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:54:52,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:54:52,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2021-11-23 13:54:52,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580079328] [2021-11-23 13:54:52,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:54:52,253 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:54:52,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2021-11-23 13:54:52,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:52,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964790296] [2021-11-23 13:54:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:52,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:52,267 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:54:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:54:52,282 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:54:52,440 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:54:52,440 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:54:52,440 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:54:52,440 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:54:52,441 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:54:52,441 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,441 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:54:52,441 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:54:52,441 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration4_Loop [2021-11-23 13:54:52,441 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:54:52,441 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:54:52,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:52,535 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:54:52,535 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:54:52,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,537 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,541 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-23 13:54:52,558 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,559 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:52,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,607 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-23 13:54:52,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,649 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:52,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,699 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-23 13:54:52,730 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,730 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-11-23 13:54:52,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,763 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-23 13:54:52,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,776 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,776 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-11-23 13:54:52,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,802 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-23 13:54:52,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,815 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-11-23 13:54:52,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,842 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-23 13:54:52,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-11-23 13:54:52,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,885 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-23 13:54:52,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,897 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,898 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-11-23 13:54:52,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,924 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-23 13:54:52,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:52,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:52,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:52,963 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:52,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-23 13:54:52,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:52,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:52,977 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:54:52,977 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:54:53,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-11-23 13:54:53,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,004 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:54:53,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:53,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-23 13:54:53,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-11-23 13:54:53,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,045 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-23 13:54:53,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:54:53,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:54:53,143 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:54:53,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,146 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:54:53,146 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:54:53,146 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:54:53,146 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:54:53,146 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:54:53,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,147 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:54:53,147 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:54:53,147 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration4_Loop [2021-11-23 13:54:53,147 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:54:53,147 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:54:53,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:54:53,230 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:54:53,230 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:54:53,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,236 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-23 13:54:53,238 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 [2021-11-23 13:54:53,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,247 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-11-23 13:54:53,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,287 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-23 13:54:53,289 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 [2021-11-23 13:54:53,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,300 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,300 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,301 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-11-23 13:54:53,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,328 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,330 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 [2021-11-23 13:54:53,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-23 13:54:53,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,346 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,346 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,356 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,400 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,407 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 [2021-11-23 13:54:53,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,418 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-23 13:54:53,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,433 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,481 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,486 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 [2021-11-23 13:54:53,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,498 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-23 13:54:53,513 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-11-23 13:54:53,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,543 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,545 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 [2021-11-23 13:54:53,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,558 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-23 13:54:53,581 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,623 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-23 13:54:53,625 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 [2021-11-23 13:54:53,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,636 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,662 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-23 13:54:53,664 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 [2021-11-23 13:54:53,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,673 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,676 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,703 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-23 13:54:53,704 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 [2021-11-23 13:54:53,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,714 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,716 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:54:53,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,742 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-11-23 13:54:53,745 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 [2021-11-23 13:54:53,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:54:53,754 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:54:53,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:54:53,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:54:53,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:54:53,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:54:53,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:54:53,766 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:54:53,772 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:54:53,772 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:54:53,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:54:53,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:53,781 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:54:53,783 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:54:53,783 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:54:53,783 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:54:53,783 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-11-23 13:54:53,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-11-23 13:54:53,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:53,814 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:54:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:53,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:54:53,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:54,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:54:54,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:54,675 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 [2021-11-23 13:54:54,675 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:54:54,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:54,893 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2021-11-23 13:54:54,894 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 [2021-11-23 13:54:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:54:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2021-11-23 13:54:54,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-23 13:54:54,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:54,897 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:54:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:54:54,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:55,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:54:55,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:55,613 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 [2021-11-23 13:54:55,613 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:54:55,826 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2021-11-23 13:54:55,827 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 [2021-11-23 13:54:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:54:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2021-11-23 13:54:55,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-23 13:54:55,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:55,829 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:54:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:55,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:54:55,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:56,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:54:56,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:56,596 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 [2021-11-23 13:54:56,596 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:54:56,831 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 587 states and 803 transitions. Complement of second has 25 states. [2021-11-23 13:54:56,831 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 [2021-11-23 13:54:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:54:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-11-23 13:54:56,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-23 13:54:56,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:56,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2021-11-23 13:54:56,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:56,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2021-11-23 13:54:56,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:54:56,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2021-11-23 13:54:56,856 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2021-11-23 13:54:56,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2021-11-23 13:54:56,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2021-11-23 13:54:56,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-11-23 13:54:56,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2021-11-23 13:54:56,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:54:56,881 INFO L681 BuchiCegarLoop]: Abstraction has 476 states and 676 transitions. [2021-11-23 13:54:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2021-11-23 13:54:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2021-11-23 13:54:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2021-11-23 13:54:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2021-11-23 13:54:56,953 INFO L704 BuchiCegarLoop]: Abstraction has 401 states and 544 transitions. [2021-11-23 13:54:56,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:54:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 13:54:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-23 13:54:56,956 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2021-11-23 13:54:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:57,663 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2021-11-23 13:54:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 13:54:57,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2021-11-23 13:54:57,676 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2021-11-23 13:54:57,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2021-11-23 13:54:57,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2021-11-23 13:54:57,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2021-11-23 13:54:57,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2021-11-23 13:54:57,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:54:57,688 INFO L681 BuchiCegarLoop]: Abstraction has 457 states and 645 transitions. [2021-11-23 13:54:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2021-11-23 13:54:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2021-11-23 13:54:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2021-11-23 13:54:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2021-11-23 13:54:57,720 INFO L704 BuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2021-11-23 13:54:57,721 INFO L587 BuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2021-11-23 13:54:57,721 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-23 13:54:57,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2021-11-23 13:54:57,726 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2021-11-23 13:54:57,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:54:57,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:54:57,733 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:57,733 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:57,734 INFO L791 eck$LassoCheckResult]: Stem: 5286#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); 5287#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 := 8; 5315#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5369#fibo1ENTRY ~n := #in~n; 5421#L10 assume !(~n < 1); 5420#L12 assume !(1 == ~n); 5416#L15 call #t~ret4 := fibo2(~n - 1);< 5419#fibo2ENTRY ~n := #in~n; 5418#L20 assume !(~n < 1); 5417#L22 assume !(1 == ~n); 5412#L25 call #t~ret6 := fibo1(~n - 1);< 5415#fibo1ENTRY ~n := #in~n; 5414#L10 assume !(~n < 1); 5413#L12 assume !(1 == ~n); 5408#L15 call #t~ret4 := fibo2(~n - 1);< 5411#fibo2ENTRY ~n := #in~n; 5410#L20 assume !(~n < 1); 5409#L22 assume !(1 == ~n); 5404#L25 call #t~ret6 := fibo1(~n - 1);< 5407#fibo1ENTRY ~n := #in~n; 5406#L10 assume !(~n < 1); 5405#L12 assume !(1 == ~n); 5390#L15 call #t~ret4 := fibo2(~n - 1);< 5403#fibo2ENTRY ~n := #in~n; 5399#L20 assume !(~n < 1); 5400#L22 assume !(1 == ~n); 5318#L25 call #t~ret6 := fibo1(~n - 1);< 5427#fibo1ENTRY ~n := #in~n; 5428#L10 assume !(~n < 1); 5578#L12 assume 1 == ~n;#res := 1; 5579#fibo1FINAL assume true; 5644#fibo1EXIT >#46#return; 5487#L25-1 call #t~ret7 := fibo1(~n - 2);< 5498#fibo1ENTRY ~n := #in~n; 5494#L10 assume !(~n < 1); 5495#L12 assume !(1 == ~n); 5479#L15 call #t~ret4 := fibo2(~n - 1);< 5486#fibo2ENTRY ~n := #in~n; 5484#L20 assume !(~n < 1); 5481#L22 assume 1 == ~n;#res := 1; 5482#fibo2FINAL assume true; 5567#fibo2EXIT >#50#return; 5356#L15-1 [2021-11-23 13:54:57,734 INFO L793 eck$LassoCheckResult]: Loop: 5356#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#fibo2ENTRY ~n := #in~n; 5348#L20 assume !(~n < 1); 5357#L22 assume !(1 == ~n); 5550#L25 call #t~ret6 := fibo1(~n - 1);< 5558#fibo1ENTRY ~n := #in~n; 5597#L10 assume !(~n < 1); 5596#L12 assume 1 == ~n;#res := 1; 5595#fibo1FINAL assume true; 5593#fibo1EXIT >#46#return; 5585#L25-1 call #t~ret7 := fibo1(~n - 2);< 5591#fibo1ENTRY ~n := #in~n; 5590#L10 assume !(~n < 1); 5589#L12 assume !(1 == ~n); 5350#L15 call #t~ret4 := fibo2(~n - 1);< 5362#fibo2ENTRY ~n := #in~n; 5363#L20 assume !(~n < 1); 5630#L22 assume !(1 == ~n); 5607#L25 call #t~ret6 := fibo1(~n - 1);< 5608#fibo1ENTRY ~n := #in~n; 5622#L10 assume !(~n < 1); 5620#L12 assume 1 == ~n;#res := 1; 5619#fibo1FINAL assume true; 5606#fibo1EXIT >#46#return; 5603#L25-1 call #t~ret7 := fibo1(~n - 2);< 5605#fibo1ENTRY ~n := #in~n; 5652#L10 assume ~n < 1;#res := 0; 5649#fibo1FINAL assume true; 5602#fibo1EXIT >#48#return; 5555#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5599#fibo2FINAL assume true; 5564#fibo2EXIT >#50#return; 5356#L15-1 [2021-11-23 13:54:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1816161101, now seen corresponding path program 1 times [2021-11-23 13:54:57,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772268897] [2021-11-23 13:54:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:57,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-23 13:54:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-23 13:54:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:58,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:58,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772268897] [2021-11-23 13:54:58,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772268897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:58,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579560607] [2021-11-23 13:54:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:58,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:58,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:58,013 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:58,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-23 13:54:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 13:54:58,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:58,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:58,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579560607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:54:58,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:54:58,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2021-11-23 13:54:58,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293629490] [2021-11-23 13:54:58,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:54:58,421 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:54:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1364976163, now seen corresponding path program 1 times [2021-11-23 13:54:58,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:58,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894006099] [2021-11-23 13:54:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:58,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:54:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-23 13:54:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:54:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:54:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:54:58,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894006099] [2021-11-23 13:54:58,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894006099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815894387] [2021-11-23 13:54:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:58,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:58,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:58,515 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:58,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-23 13:54:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:58,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:54:58,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:54:58,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:54:58,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815894387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:54:58,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:54:58,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-11-23 13:54:58,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077754548] [2021-11-23 13:54:58,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:54:58,748 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 13:54:58,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:54:58,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:54:58,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:54:58,749 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 13:54:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:58,847 INFO L93 Difference]: Finished difference Result 384 states and 501 transitions. [2021-11-23 13:54:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:54:58,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 384 states and 501 transitions. [2021-11-23 13:54:58,869 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-23 13:54:58,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 384 states to 359 states and 475 transitions. [2021-11-23 13:54:58,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2021-11-23 13:54:58,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2021-11-23 13:54:58,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 359 states and 475 transitions. [2021-11-23 13:54:58,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:54:58,880 INFO L681 BuchiCegarLoop]: Abstraction has 359 states and 475 transitions. [2021-11-23 13:54:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states and 475 transitions. [2021-11-23 13:54:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2021-11-23 13:54:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 227 states have (on average 1.1629955947136563) internal successors, (264), 244 states have internal predecessors, (264), 65 states have call successors, (66), 50 states have call predecessors, (66), 52 states have return successors, (119), 49 states have call predecessors, (119), 63 states have call successors, (119) [2021-11-23 13:54:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 449 transitions. [2021-11-23 13:54:58,900 INFO L704 BuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2021-11-23 13:54:58,900 INFO L587 BuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2021-11-23 13:54:58,900 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-23 13:54:58,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 344 states and 449 transitions. [2021-11-23 13:54:58,905 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-23 13:54:58,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:54:58,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:54:58,909 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:58,910 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] [2021-11-23 13:54:58,910 INFO L791 eck$LassoCheckResult]: Stem: 6590#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); 6591#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 := 8; 6621#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6659#fibo1ENTRY ~n := #in~n; 6773#L10 assume !(~n < 1); 6772#L12 assume !(1 == ~n); 6768#L15 call #t~ret4 := fibo2(~n - 1);< 6771#fibo2ENTRY ~n := #in~n; 6770#L20 assume !(~n < 1); 6769#L22 assume !(1 == ~n); 6759#L25 call #t~ret6 := fibo1(~n - 1);< 6767#fibo1ENTRY ~n := #in~n; 6766#L10 assume !(~n < 1); 6765#L12 assume !(1 == ~n); 6755#L15 call #t~ret4 := fibo2(~n - 1);< 6758#fibo2ENTRY ~n := #in~n; 6757#L20 assume !(~n < 1); 6756#L22 assume !(1 == ~n); 6741#L25 call #t~ret6 := fibo1(~n - 1);< 6754#fibo1ENTRY ~n := #in~n; 6753#L10 assume !(~n < 1); 6752#L12 assume !(1 == ~n); 6698#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6747#L10 assume !(~n < 1); 6745#L12 assume !(1 == ~n); 6677#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6750#L10 assume !(~n < 1); 6764#L12 assume 1 == ~n;#res := 1; 6902#fibo1FINAL assume true; 6898#fibo1EXIT >#46#return; 6899#L25-1 call #t~ret7 := fibo1(~n - 2);< 6910#fibo1ENTRY ~n := #in~n; 6912#L10 assume ~n < 1;#res := 0; 6909#fibo1FINAL assume true; 6907#fibo1EXIT >#48#return; 6891#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6889#fibo2FINAL assume true; 6825#fibo2EXIT >#50#return; 6796#L15-1 [2021-11-23 13:54:58,910 INFO L793 eck$LassoCheckResult]: Loop: 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6834#L20 assume !(~n < 1); 6852#L22 assume 1 == ~n;#res := 1; 6850#fibo2FINAL assume true; 6831#fibo2EXIT >#50#return; 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6835#L20 assume ~n < 1;#res := 0; 6876#fibo2FINAL assume true; 6824#fibo2EXIT >#52#return; 6800#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6820#fibo1FINAL assume true; 6812#fibo1EXIT >#46#return; 6814#L25-1 call #t~ret7 := fibo1(~n - 2);< 6819#fibo1ENTRY ~n := #in~n; 6857#L10 assume ~n < 1;#res := 0; 6858#fibo1FINAL assume true; 6842#fibo1EXIT >#48#return; 6840#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6838#fibo2FINAL assume true; 6803#fibo2EXIT >#50#return; 6796#L15-1 [2021-11-23 13:54:58,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 1 times [2021-11-23 13:54:58,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:58,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366963421] [2021-11-23 13:54:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:58,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-23 13:54:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:54:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:54:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:54:59,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:59,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366963421] [2021-11-23 13:54:59,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366963421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:59,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651182386] [2021-11-23 13:54:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:59,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:59,215 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:59,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-23 13:54:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:54:59,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:54:59,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:54:59,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651182386] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:54:59,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:54:59,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2021-11-23 13:54:59,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369762242] [2021-11-23 13:54:59,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:54:59,810 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:54:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1513837346, now seen corresponding path program 1 times [2021-11-23 13:54:59,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:59,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801511757] [2021-11-23 13:54:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:59,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-23 13:54:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:54:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:54:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:54:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-23 13:54:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 13:54:59,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:59,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801511757] [2021-11-23 13:54:59,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801511757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:59,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026217579] [2021-11-23 13:54:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:59,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:59,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:59,941 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:59,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-23 13:54:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:59,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:54:59,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 13:55:00,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 13:55:00,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026217579] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:55:00,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:55:00,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-11-23 13:55:00,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972146211] [2021-11-23 13:55:00,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:55:00,441 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 13:55:00,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:55:00,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:55:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:55:00,442 INFO L87 Difference]: Start difference. First operand 344 states and 449 transitions. cyclomatic complexity: 111 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) [2021-11-23 13:55:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:00,645 INFO L93 Difference]: Finished difference Result 360 states and 459 transitions. [2021-11-23 13:55:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:55:00,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 360 states and 459 transitions. [2021-11-23 13:55:00,653 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2021-11-23 13:55:00,669 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 360 states to 360 states and 459 transitions. [2021-11-23 13:55:00,669 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-11-23 13:55:00,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-11-23 13:55:00,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 360 states and 459 transitions. [2021-11-23 13:55:00,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:55:00,678 INFO L681 BuchiCegarLoop]: Abstraction has 360 states and 459 transitions. [2021-11-23 13:55:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states and 459 transitions. [2021-11-23 13:55:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 321. [2021-11-23 13:55:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.1737089201877935) internal successors, (250), 230 states have internal predecessors, (250), 61 states have call successors, (62), 46 states have call predecessors, (62), 47 states have return successors, (98), 44 states have call predecessors, (98), 59 states have call successors, (98) [2021-11-23 13:55:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 410 transitions. [2021-11-23 13:55:00,698 INFO L704 BuchiCegarLoop]: Abstraction has 321 states and 410 transitions. [2021-11-23 13:55:00,698 INFO L587 BuchiCegarLoop]: Abstraction has 321 states and 410 transitions. [2021-11-23 13:55:00,698 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-23 13:55:00,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 321 states and 410 transitions. [2021-11-23 13:55:00,702 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-23 13:55:00,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:55:00,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:55:00,704 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:00,705 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:00,706 INFO L791 eck$LassoCheckResult]: Stem: 7933#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); 7934#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 := 8; 7963#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8007#fibo1ENTRY ~n := #in~n; 8110#L10 assume !(~n < 1); 8109#L12 assume !(1 == ~n); 8105#L15 call #t~ret4 := fibo2(~n - 1);< 8108#fibo2ENTRY ~n := #in~n; 8107#L20 assume !(~n < 1); 8106#L22 assume !(1 == ~n); 8101#L25 call #t~ret6 := fibo1(~n - 1);< 8104#fibo1ENTRY ~n := #in~n; 8103#L10 assume !(~n < 1); 8102#L12 assume !(1 == ~n); 8097#L15 call #t~ret4 := fibo2(~n - 1);< 8100#fibo2ENTRY ~n := #in~n; 8099#L20 assume !(~n < 1); 8098#L22 assume !(1 == ~n); 8093#L25 call #t~ret6 := fibo1(~n - 1);< 8096#fibo1ENTRY ~n := #in~n; 8095#L10 assume !(~n < 1); 8094#L12 assume !(1 == ~n); 8016#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8075#L10 assume !(~n < 1); 8076#L12 assume !(1 == ~n); 8017#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8077#L10 assume !(~n < 1); 8088#L12 assume 1 == ~n;#res := 1; 8252#fibo1FINAL assume true; 8251#fibo1EXIT >#46#return; 7942#L25-1 call #t~ret7 := fibo1(~n - 2);< 8216#fibo1ENTRY ~n := #in~n; 8253#L10 assume ~n < 1;#res := 0; 7941#fibo1FINAL assume true; 7943#fibo1EXIT >#48#return; 8214#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8213#fibo2FINAL assume true; 8117#fibo2EXIT >#50#return; 8118#L15-1 [2021-11-23 13:55:00,707 INFO L793 eck$LassoCheckResult]: Loop: 8118#L15-1 call #t~ret5 := fibo2(~n - 2);< 8129#fibo2ENTRY ~n := #in~n; 8173#L20 assume !(~n < 1); 8152#L22 assume !(1 == ~n); 8143#L25 call #t~ret6 := fibo1(~n - 1);< 8150#fibo1ENTRY ~n := #in~n; 8188#L10 assume !(~n < 1); 8185#L12 assume !(1 == ~n); 8125#L15 call #t~ret4 := fibo2(~n - 1);< 8137#fibo2ENTRY ~n := #in~n; 8183#L20 assume !(~n < 1); 8178#L22 assume !(1 == ~n); 8179#L25 call #t~ret6 := fibo1(~n - 1);< 8203#fibo1ENTRY ~n := #in~n; 8206#L10 assume !(~n < 1); 8205#L12 assume 1 == ~n;#res := 1; 8204#fibo1FINAL assume true; 8202#fibo1EXIT >#46#return; 8147#L25-1 call #t~ret7 := fibo1(~n - 2);< 8181#fibo1ENTRY ~n := #in~n; 8224#L10 assume ~n < 1;#res := 0; 8155#fibo1FINAL assume true; 8180#fibo1EXIT >#48#return; 8177#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8175#fibo2FINAL assume true; 8164#fibo2EXIT >#50#return; 8118#L15-1 [2021-11-23 13:55:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 2 times [2021-11-23 13:55:00,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:00,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212232242] [2021-11-23 13:55:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:00,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-23 13:55:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:55:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:55:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:55:01,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:55:01,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212232242] [2021-11-23 13:55:01,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212232242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:55:01,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591813605] [2021-11-23 13:55:01,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:55:01,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:55:01,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:01,025 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:55:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-23 13:55:01,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:55:01,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:55:01,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:55:01,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:55:01,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:55:01,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591813605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:55:01,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:55:01,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2021-11-23 13:55:01,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578961566] [2021-11-23 13:55:01,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:55:01,589 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:55:01,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 2 times [2021-11-23 13:55:01,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:01,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970213770] [2021-11-23 13:55:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:01,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:01,600 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:55:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:01,606 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:55:02,029 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:02,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:02,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:02,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:02,029 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:55:02,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:02,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:02,029 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:02,029 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-11-23 13:55:02,029 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:02,029 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:02,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:02,163 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:02,163 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:55:02,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:02,165 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:02,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-11-23 13:55:02,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:02,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:02,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:02,176 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:02,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-11-23 13:55:02,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:02,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:02,201 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:02,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-11-23 13:55:02,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:02,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:02,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:02,214 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:02,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-11-23 13:55:02,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:02,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:02,239 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:02,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-11-23 13:55:02,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:02,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:02,250 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:02,250 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:02,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-11-23 13:55:02,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:02,275 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:02,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-11-23 13:55:02,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:02,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:02,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:02,287 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:02,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-11-23 13:55:02,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:02,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:02,313 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:02,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:02,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:02,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-11-23 13:55:02,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:02,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:02,374 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-11-23 13:55:02,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:55:02,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:04,157 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:55:04,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-11-23 13:55:04,160 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:04,160 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:04,160 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:04,160 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:04,160 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:55:04,160 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:04,160 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:04,161 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:04,161 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-11-23 13:55:04,161 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:04,161 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:04,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:04,258 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:04,258 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:55:04,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:04,259 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:04,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-11-23 13:55:04,261 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 [2021-11-23 13:55:04,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:04,270 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:04,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:04,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:04,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:04,271 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:04,271 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:04,272 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:04,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:04,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:04,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:04,299 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:04,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-11-23 13:55:04,300 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 [2021-11-23 13:55:04,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:04,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:04,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:04,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:04,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:04,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:04,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:04,324 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:04,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:04,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:04,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:04,356 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:04,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-11-23 13:55:04,362 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 [2021-11-23 13:55:04,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:04,371 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:04,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:04,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:04,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:04,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:04,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:04,405 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:04,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:04,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:04,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:04,448 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:04,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-11-23 13:55:04,454 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 [2021-11-23 13:55:04,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:04,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:04,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:04,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:04,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:04,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:04,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:04,467 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:04,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2021-11-23 13:55:04,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:04,493 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:04,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-11-23 13:55:04,494 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 [2021-11-23 13:55:04,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:04,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:04,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:04,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:04,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:04,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:04,506 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:04,527 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:55:04,531 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:55:04,531 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:55:04,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:04,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:04,532 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:04,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-11-23 13:55:04,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:55:04,534 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:55:04,534 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:55:04,534 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-23 13:55:04,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:04,571 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:55:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:04,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 13:55:04,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:05,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 13:55:05,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:55:05,326 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 [2021-11-23 13:55:05,326 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95 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) [2021-11-23 13:55:05,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:05,844 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95. 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 1107 states and 1416 transitions. Complement of second has 46 states. [2021-11-23 13:55:05,844 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 [2021-11-23 13:55:05,845 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) [2021-11-23 13:55:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2021-11-23 13:55:05,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 26 letters. [2021-11-23 13:55:05,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:05,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 74 letters. Loop has 26 letters. [2021-11-23 13:55:05,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:05,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 52 letters. [2021-11-23 13:55:05,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:05,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1107 states and 1416 transitions. [2021-11-23 13:55:05,868 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2021-11-23 13:55:05,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1107 states to 1020 states and 1321 transitions. [2021-11-23 13:55:05,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 429 [2021-11-23 13:55:05,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 453 [2021-11-23 13:55:05,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1020 states and 1321 transitions. [2021-11-23 13:55:05,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:55:05,889 INFO L681 BuchiCegarLoop]: Abstraction has 1020 states and 1321 transitions. [2021-11-23 13:55:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states and 1321 transitions. [2021-11-23 13:55:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 963. [2021-11-23 13:55:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 631 states have (on average 1.1933438985736926) internal successors, (753), 691 states have internal predecessors, (753), 184 states have call successors, (190), 132 states have call predecessors, (190), 148 states have return successors, (305), 139 states have call predecessors, (305), 182 states have call successors, (305) [2021-11-23 13:55:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1248 transitions. [2021-11-23 13:55:05,937 INFO L704 BuchiCegarLoop]: Abstraction has 963 states and 1248 transitions. [2021-11-23 13:55:05,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:55:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 13:55:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-11-23 13:55:05,939 INFO L87 Difference]: Start difference. First operand 963 states and 1248 transitions. Second operand has 26 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 13:55:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:06,905 INFO L93 Difference]: Finished difference Result 1028 states and 1212 transitions. [2021-11-23 13:55:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 13:55:06,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1028 states and 1212 transitions. [2021-11-23 13:55:06,924 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 90 [2021-11-23 13:55:06,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1028 states to 450 states and 523 transitions. [2021-11-23 13:55:06,961 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2021-11-23 13:55:06,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 289 [2021-11-23 13:55:06,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 523 transitions. [2021-11-23 13:55:06,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:55:06,963 INFO L681 BuchiCegarLoop]: Abstraction has 450 states and 523 transitions. [2021-11-23 13:55:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 523 transitions. [2021-11-23 13:55:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 402. [2021-11-23 13:55:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 266 states have (on average 1.112781954887218) internal successors, (296), 283 states have internal predecessors, (296), 83 states have call successors, (84), 63 states have call predecessors, (84), 53 states have return successors, (88), 55 states have call predecessors, (88), 66 states have call successors, (88) [2021-11-23 13:55:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 468 transitions. [2021-11-23 13:55:06,985 INFO L704 BuchiCegarLoop]: Abstraction has 402 states and 468 transitions. [2021-11-23 13:55:06,985 INFO L587 BuchiCegarLoop]: Abstraction has 402 states and 468 transitions. [2021-11-23 13:55:06,985 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-23 13:55:06,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 402 states and 468 transitions. [2021-11-23 13:55:06,989 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 64 [2021-11-23 13:55:06,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:55:06,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:55:06,992 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:06,992 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:06,995 INFO L791 eck$LassoCheckResult]: Stem: 12047#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); 12048#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 := 8; 12076#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12112#fibo1ENTRY ~n := #in~n; 12188#L10 assume !(~n < 1); 12187#L12 assume !(1 == ~n); 12183#L15 call #t~ret4 := fibo2(~n - 1);< 12186#fibo2ENTRY ~n := #in~n; 12185#L20 assume !(~n < 1); 12184#L22 assume !(1 == ~n); 12179#L25 call #t~ret6 := fibo1(~n - 1);< 12182#fibo1ENTRY ~n := #in~n; 12181#L10 assume !(~n < 1); 12180#L12 assume !(1 == ~n); 12175#L15 call #t~ret4 := fibo2(~n - 1);< 12178#fibo2ENTRY ~n := #in~n; 12177#L20 assume !(~n < 1); 12176#L22 assume !(1 == ~n); 12170#L25 call #t~ret6 := fibo1(~n - 1);< 12174#fibo1ENTRY ~n := #in~n; 12173#L10 assume !(~n < 1); 12172#L12 assume !(1 == ~n); 12106#L15 call #t~ret4 := fibo2(~n - 1);< 12171#fibo2ENTRY ~n := #in~n; 12212#L20 assume !(~n < 1); 12210#L22 assume !(1 == ~n); 12155#L25 call #t~ret6 := fibo1(~n - 1);< 12215#fibo1ENTRY ~n := #in~n; 12216#L10 assume !(~n < 1); 12230#L12 assume !(1 == ~n); 12226#L15 call #t~ret4 := fibo2(~n - 1);< 12227#fibo2ENTRY ~n := #in~n; 12232#L20 assume !(~n < 1); 12231#L22 assume 1 == ~n;#res := 1; 12229#fibo2FINAL assume true; 12225#fibo2EXIT >#50#return; 12222#L15-1 call #t~ret5 := fibo2(~n - 2);< 12223#fibo2ENTRY ~n := #in~n; 12228#L20 assume ~n < 1;#res := 0; 12224#fibo2FINAL assume true; 12221#fibo2EXIT >#52#return; 12220#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12219#fibo1FINAL assume true; 12154#fibo1EXIT >#46#return; 12139#L25-1 call #t~ret7 := fibo1(~n - 2);< 12068#fibo1ENTRY ~n := #in~n; 12138#L10 assume !(~n < 1); 12140#L12 assume !(1 == ~n); 12067#L15 call #t~ret4 := fibo2(~n - 1);< 12132#fibo2ENTRY ~n := #in~n; 12133#L20 assume !(~n < 1); 12122#L22 assume 1 == ~n;#res := 1; 12123#fibo2FINAL assume true; 12274#fibo2EXIT >#50#return; 12085#L15-1 [2021-11-23 13:55:06,995 INFO L793 eck$LassoCheckResult]: Loop: 12085#L15-1 call #t~ret5 := fibo2(~n - 2);< 12272#fibo2ENTRY ~n := #in~n; 12302#L20 assume !(~n < 1); 12264#L22 assume !(1 == ~n); 12251#L25 call #t~ret6 := fibo1(~n - 1);< 12259#fibo1ENTRY ~n := #in~n; 12289#L10 assume !(~n < 1); 12282#L12 assume !(1 == ~n); 12089#L15 call #t~ret4 := fibo2(~n - 1);< 12279#fibo2ENTRY ~n := #in~n; 12303#L20 assume !(~n < 1); 12376#L22 assume 1 == ~n;#res := 1; 12375#fibo2FINAL assume true; 12277#fibo2EXIT >#50#return; 12085#L15-1 [2021-11-23 13:55:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash 628833608, now seen corresponding path program 1 times [2021-11-23 13:55:06,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:06,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754967189] [2021-11-23 13:55:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:06,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:07,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-23 13:55:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:55:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:55:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-23 13:55:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 13:55:07,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:55:07,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754967189] [2021-11-23 13:55:07,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754967189] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:55:07,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658338498] [2021-11-23 13:55:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:07,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:55:07,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:07,349 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:55:07,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-23 13:55:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:07,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:55:07,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:55:07,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:55:07,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658338498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:55:07,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:55:07,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2021-11-23 13:55:07,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599578953] [2021-11-23 13:55:07,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:55:07,814 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:55:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2021-11-23 13:55:07,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:07,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527837856] [2021-11-23 13:55:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:07,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:07,820 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:55:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:07,825 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:55:08,051 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:08,051 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:08,051 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:08,051 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:08,051 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:55:08,051 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:08,051 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:08,051 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:08,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration8_Loop [2021-11-23 13:55:08,052 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:08,052 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:08,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:08,138 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:08,139 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:55:08,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:08,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:08,141 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:08,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:08,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:08,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-11-23 13:55:08,174 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:08,175 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:08,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:08,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:08,218 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:08,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:08,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:08,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-11-23 13:55:08,245 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:08,245 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:08,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:08,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:08,290 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:08,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:08,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:08,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-11-23 13:55:08,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:08,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:08,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:08,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:08,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:08,359 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:08,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:08,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:08,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-11-23 13:55:08,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-11-23 13:55:08,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:08,408 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:08,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-11-23 13:55:08,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:55:08,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:09,655 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:55:09,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:09,659 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:09,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:09,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:09,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:09,671 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:55:09,671 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:09,671 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:09,671 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:09,671 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration8_Loop [2021-11-23 13:55:09,671 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:09,672 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:09,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:09,769 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:09,769 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:55:09,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:09,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:09,771 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:09,782 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 [2021-11-23 13:55:09,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:09,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:09,794 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:09,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:09,794 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:09,795 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:09,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:09,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-11-23 13:55:09,805 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:09,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:09,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:09,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:09,846 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:09,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-11-23 13:55:09,847 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 [2021-11-23 13:55:09,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:09,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:09,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:09,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:09,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:09,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:09,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:09,861 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:09,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2021-11-23 13:55:09,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:09,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:09,888 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:09,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-11-23 13:55:09,892 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 [2021-11-23 13:55:09,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:09,902 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:09,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:09,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:09,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:09,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:09,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:09,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:55:09,911 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:55:09,911 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:55:09,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:09,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:09,912 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:09,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-11-23 13:55:09,914 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:55:09,914 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:55:09,914 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:55:09,914 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-23 13:55:09,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2021-11-23 13:55:09,940 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:55:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:10,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:55:10,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:10,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:55:10,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:10,603 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 [2021-11-23 13:55:10,603 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 13:55:10,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:10,952 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 553 states and 633 transitions. Complement of second has 40 states. [2021-11-23 13:55:10,961 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 [2021-11-23 13:55:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 13:55:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 50 transitions. [2021-11-23 13:55:10,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-23 13:55:10,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:10,964 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:55:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:11,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:55:11,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:11,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:55:11,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:11,602 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2021-11-23 13:55:11,602 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 13:55:11,857 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 475 states and 545 transitions. Complement of second has 26 states. [2021-11-23 13:55:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2021-11-23 13:55:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 13:55:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 31 transitions. [2021-11-23 13:55:11,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 31 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-23 13:55:11,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:11,859 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:55:11,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:11,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:55:11,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:12,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:55:12,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:12,544 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 8 loop predicates [2021-11-23 13:55:12,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 13:55:12,985 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1507 states and 1740 transitions. Complement of second has 102 states. [2021-11-23 13:55:12,986 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 [2021-11-23 13:55:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 13:55:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2021-11-23 13:55:12,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-23 13:55:12,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:12,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 68 letters. Loop has 14 letters. [2021-11-23 13:55:12,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:12,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 28 letters. [2021-11-23 13:55:12,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:12,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1507 states and 1740 transitions. [2021-11-23 13:55:13,028 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 166 [2021-11-23 13:55:13,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1507 states to 892 states and 1055 transitions. [2021-11-23 13:55:13,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 415 [2021-11-23 13:55:13,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 462 [2021-11-23 13:55:13,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 892 states and 1055 transitions. [2021-11-23 13:55:13,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:55:13,047 INFO L681 BuchiCegarLoop]: Abstraction has 892 states and 1055 transitions. [2021-11-23 13:55:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states and 1055 transitions. [2021-11-23 13:55:13,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 798. [2021-11-23 13:55:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 525 states have (on average 1.1123809523809525) internal successors, (584), 569 states have internal predecessors, (584), 160 states have call successors, (170), 121 states have call predecessors, (170), 113 states have return successors, (181), 107 states have call predecessors, (181), 136 states have call successors, (181) [2021-11-23 13:55:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 935 transitions. [2021-11-23 13:55:13,088 INFO L704 BuchiCegarLoop]: Abstraction has 798 states and 935 transitions. [2021-11-23 13:55:13,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:55:13,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 13:55:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-11-23 13:55:13,090 INFO L87 Difference]: Start difference. First operand 798 states and 935 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 13:55:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:13,634 INFO L93 Difference]: Finished difference Result 617 states and 721 transitions. [2021-11-23 13:55:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 13:55:13,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 617 states and 721 transitions. [2021-11-23 13:55:13,644 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-11-23 13:55:13,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 617 states to 496 states and 589 transitions. [2021-11-23 13:55:13,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 281 [2021-11-23 13:55:13,652 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2021-11-23 13:55:13,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 589 transitions. [2021-11-23 13:55:13,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:55:13,652 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 589 transitions. [2021-11-23 13:55:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 589 transitions. [2021-11-23 13:55:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 491. [2021-11-23 13:55:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 320 states have (on average 1.1125) internal successors, (356), 350 states have internal predecessors, (356), 97 states have call successors, (103), 69 states have call predecessors, (103), 74 states have return successors, (122), 71 states have call predecessors, (122), 88 states have call successors, (122) [2021-11-23 13:55:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 581 transitions. [2021-11-23 13:55:13,673 INFO L704 BuchiCegarLoop]: Abstraction has 491 states and 581 transitions. [2021-11-23 13:55:13,673 INFO L587 BuchiCegarLoop]: Abstraction has 491 states and 581 transitions. [2021-11-23 13:55:13,673 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-23 13:55:13,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 491 states and 581 transitions. [2021-11-23 13:55:13,678 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-11-23 13:55:13,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:55:13,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:55:13,688 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:13,688 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:13,689 INFO L791 eck$LassoCheckResult]: Stem: 17665#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); 17666#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 := 8; 17700#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17741#fibo1ENTRY ~n := #in~n; 17805#L10 assume !(~n < 1); 17803#L12 assume !(1 == ~n); 17800#L15 call #t~ret4 := fibo2(~n - 1);< 17801#fibo2ENTRY ~n := #in~n; 17821#L20 assume !(~n < 1); 17815#L22 assume !(1 == ~n); 17811#L25 call #t~ret6 := fibo1(~n - 1);< 17812#fibo1ENTRY ~n := #in~n; 17860#L10 assume !(~n < 1); 17859#L12 assume !(1 == ~n); 17850#L15 call #t~ret4 := fibo2(~n - 1);< 17851#fibo2ENTRY ~n := #in~n; 17878#L20 assume !(~n < 1); 17875#L22 assume !(1 == ~n); 17872#L25 call #t~ret6 := fibo1(~n - 1);< 17873#fibo1ENTRY ~n := #in~n; 17895#L10 assume !(~n < 1); 17893#L12 assume !(1 == ~n); 17891#L15 call #t~ret4 := fibo2(~n - 1);< 17892#fibo2ENTRY ~n := #in~n; 17906#L20 assume !(~n < 1); 17904#L22 assume !(1 == ~n); 17901#L25 call #t~ret6 := fibo1(~n - 1);< 17902#fibo1ENTRY ~n := #in~n; 17923#L10 assume !(~n < 1); 17921#L12 assume !(1 == ~n); 17918#L15 call #t~ret4 := fibo2(~n - 1);< 17919#fibo2ENTRY ~n := #in~n; 17926#L20 assume !(~n < 1); 17922#L22 assume 1 == ~n;#res := 1; 17920#fibo2FINAL assume true; 17917#fibo2EXIT >#50#return; 17913#L15-1 call #t~ret5 := fibo2(~n - 2);< 17914#fibo2ENTRY ~n := #in~n; 17953#L20 assume ~n < 1;#res := 0; 17952#fibo2FINAL assume true; 17912#fibo2EXIT >#52#return; 17910#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17908#fibo1FINAL assume true; 17900#fibo1EXIT >#46#return; 17898#L25-1 call #t~ret7 := fibo1(~n - 2);< 17899#fibo1ENTRY ~n := #in~n; 17907#L10 assume !(~n < 1); 17905#L12 assume 1 == ~n;#res := 1; 17903#fibo1FINAL assume true; 17897#fibo1EXIT >#48#return; 17896#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17894#fibo2FINAL assume true; 17890#fibo2EXIT >#50#return; 17685#L15-1 call #t~ret5 := fibo2(~n - 2);< 17877#fibo2ENTRY ~n := #in~n; 17915#L20 assume !(~n < 1); 17911#L22 assume 1 == ~n;#res := 1; 17909#fibo2FINAL assume true; 17889#fibo2EXIT >#52#return; 17876#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17888#fibo1FINAL assume true; 17871#fibo1EXIT >#46#return; 17841#L25-1 call #t~ret7 := fibo1(~n - 2);< 17848#fibo1ENTRY ~n := #in~n; 17966#L10 assume !(~n < 1); 17931#L12 assume !(1 == ~n); 17687#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2021-11-23 13:55:13,689 INFO L793 eck$LassoCheckResult]: Loop: 17925#fibo2ENTRY ~n := #in~n; 17934#L20 assume !(~n < 1); 17930#L22 assume !(1 == ~n); 17737#L25 call #t~ret6 := fibo1(~n - 1);< 18088#fibo1ENTRY ~n := #in~n; 17933#L10 assume !(~n < 1); 17928#L12 assume !(1 == ~n); 17683#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2021-11-23 13:55:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 930400901, now seen corresponding path program 1 times [2021-11-23 13:55:13,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:13,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95759069] [2021-11-23 13:55:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:13,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-23 13:55:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:55:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:55:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:55:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:55:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-23 13:55:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-23 13:55:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 13:55:14,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:55:14,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95759069] [2021-11-23 13:55:14,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95759069] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:55:14,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785178553] [2021-11-23 13:55:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:14,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:55:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:14,061 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:55:14,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-23 13:55:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 13:55:14,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 13:55:14,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 13:55:14,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785178553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:55:14,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:55:14,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2021-11-23 13:55:14,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178163394] [2021-11-23 13:55:14,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:55:14,718 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:55:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2021-11-23 13:55:14,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:14,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018680009] [2021-11-23 13:55:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:14,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:14,724 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:55:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:14,728 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:55:14,845 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:14,845 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:14,845 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:14,845 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:14,845 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:55:14,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:14,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:14,845 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:14,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration9_Loop [2021-11-23 13:55:14,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:14,846 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:14,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:14,943 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:14,943 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:55:14,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:14,945 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:14,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:14,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:14,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-11-23 13:55:14,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:14,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:15,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:15,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:15,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:15,025 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:15,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:15,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:15,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-11-23 13:55:15,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:15,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:15,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:15,091 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:15,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:55:15,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:15,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-11-23 13:55:15,187 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:55:15,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2021-11-23 13:55:15,193 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:15,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:15,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:15,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:15,193 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:55:15,193 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:15,193 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:15,193 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:15,193 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration9_Loop [2021-11-23 13:55:15,193 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:15,193 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:15,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:15,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:15,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:55:15,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:15,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:15,277 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:15,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-11-23 13:55:15,278 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 [2021-11-23 13:55:15,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:15,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:15,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:15,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:15,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:15,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:15,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:15,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:15,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2021-11-23 13:55:15,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:15,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:15,314 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:15,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-11-23 13:55:15,315 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 [2021-11-23 13:55:15,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:15,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:15,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:15,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:15,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:15,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:15,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:15,327 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:55:15,330 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:55:15,330 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:55:15,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:15,333 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:15,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-11-23 13:55:15,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:55:15,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:55:15,334 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:55:15,334 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-11-23 13:55:15,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:15,359 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:55:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:15,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 13:55:15,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:16,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:16,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:16,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:16,449 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 [2021-11-23 13:55:16,449 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:16,566 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2021-11-23 13:55:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-11-23 13:55:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-11-23 13:55:16,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-23 13:55:16,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:16,569 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:55:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:16,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 13:55:16,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:17,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:17,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:17,515 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 [2021-11-23 13:55:17,515 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:17,608 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2021-11-23 13:55:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-11-23 13:55:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-11-23 13:55:17,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-23 13:55:17,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:17,611 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:55:17,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:17,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 13:55:17,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:18,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:18,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:18,580 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 [2021-11-23 13:55:18,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:18,750 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 764 states and 882 transitions. Complement of second has 25 states. [2021-11-23 13:55:18,751 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 [2021-11-23 13:55:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2021-11-23 13:55:18,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-23 13:55:18,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:18,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2021-11-23 13:55:18,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:18,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2021-11-23 13:55:18,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:18,754 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 764 states and 882 transitions. [2021-11-23 13:55:18,763 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-11-23 13:55:18,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 764 states to 568 states and 666 transitions. [2021-11-23 13:55:18,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 298 [2021-11-23 13:55:18,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 328 [2021-11-23 13:55:18,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 568 states and 666 transitions. [2021-11-23 13:55:18,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:55:18,772 INFO L681 BuchiCegarLoop]: Abstraction has 568 states and 666 transitions. [2021-11-23 13:55:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states and 666 transitions. [2021-11-23 13:55:18,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 539. [2021-11-23 13:55:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 357 states have (on average 1.112044817927171) internal successors, (397), 388 states have internal predecessors, (397), 104 states have call successors, (110), 77 states have call predecessors, (110), 78 states have return successors, (125), 73 states have call predecessors, (125), 94 states have call successors, (125) [2021-11-23 13:55:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 632 transitions. [2021-11-23 13:55:18,793 INFO L704 BuchiCegarLoop]: Abstraction has 539 states and 632 transitions. [2021-11-23 13:55:18,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:55:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 13:55:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-23 13:55:18,794 INFO L87 Difference]: Start difference. First operand 539 states and 632 transitions. Second operand has 25 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 13 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-23 13:55:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:19,573 INFO L93 Difference]: Finished difference Result 683 states and 845 transitions. [2021-11-23 13:55:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 13:55:19,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 683 states and 845 transitions. [2021-11-23 13:55:19,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-11-23 13:55:19,593 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 683 states to 623 states and 768 transitions. [2021-11-23 13:55:19,593 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 335 [2021-11-23 13:55:19,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 335 [2021-11-23 13:55:19,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 623 states and 768 transitions. [2021-11-23 13:55:19,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:55:19,594 INFO L681 BuchiCegarLoop]: Abstraction has 623 states and 768 transitions. [2021-11-23 13:55:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states and 768 transitions. [2021-11-23 13:55:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 575. [2021-11-23 13:55:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 377 states have (on average 1.1114058355437666) internal successors, (419), 403 states have internal predecessors, (419), 115 states have call successors, (121), 80 states have call predecessors, (121), 83 states have return successors, (167), 91 states have call predecessors, (167), 99 states have call successors, (167) [2021-11-23 13:55:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 707 transitions. [2021-11-23 13:55:19,645 INFO L704 BuchiCegarLoop]: Abstraction has 575 states and 707 transitions. [2021-11-23 13:55:19,645 INFO L587 BuchiCegarLoop]: Abstraction has 575 states and 707 transitions. [2021-11-23 13:55:19,645 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-23 13:55:19,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 575 states and 707 transitions. [2021-11-23 13:55:19,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-11-23 13:55:19,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:55:19,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:55:19,653 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 7, 6, 6, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:19,653 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:19,654 INFO L791 eck$LassoCheckResult]: Stem: 22504#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); 22505#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 := 8; 22536#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 22576#fibo1ENTRY ~n := #in~n; 22609#L10 assume !(~n < 1); 22607#L12 assume !(1 == ~n); 22604#L15 call #t~ret4 := fibo2(~n - 1);< 22605#fibo2ENTRY ~n := #in~n; 22619#L20 assume !(~n < 1); 22617#L22 assume !(1 == ~n); 22614#L25 call #t~ret6 := fibo1(~n - 1);< 22615#fibo1ENTRY ~n := #in~n; 22638#L10 assume !(~n < 1); 22636#L12 assume !(1 == ~n); 22633#L15 call #t~ret4 := fibo2(~n - 1);< 22634#fibo2ENTRY ~n := #in~n; 22657#L20 assume !(~n < 1); 22655#L22 assume !(1 == ~n); 22652#L25 call #t~ret6 := fibo1(~n - 1);< 22653#fibo1ENTRY ~n := #in~n; 22675#L10 assume !(~n < 1); 22673#L12 assume !(1 == ~n); 22670#L15 call #t~ret4 := fibo2(~n - 1);< 22671#fibo2ENTRY ~n := #in~n; 22688#L20 assume !(~n < 1); 22685#L22 assume !(1 == ~n); 22681#L25 call #t~ret6 := fibo1(~n - 1);< 22682#fibo1ENTRY ~n := #in~n; 22700#L10 assume !(~n < 1); 22698#L12 assume !(1 == ~n); 22694#L15 call #t~ret4 := fibo2(~n - 1);< 22695#fibo2ENTRY ~n := #in~n; 22701#L20 assume !(~n < 1); 22699#L22 assume 1 == ~n;#res := 1; 22697#fibo2FINAL assume true; 22693#fibo2EXIT >#50#return; 22690#L15-1 call #t~ret5 := fibo2(~n - 2);< 22691#fibo2ENTRY ~n := #in~n; 22696#L20 assume ~n < 1;#res := 0; 22692#fibo2FINAL assume true; 22689#fibo2EXIT >#52#return; 22687#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 22684#fibo1FINAL assume true; 22680#fibo1EXIT >#46#return; 22677#L25-1 call #t~ret7 := fibo1(~n - 2);< 22678#fibo1ENTRY ~n := #in~n; 22686#L10 assume !(~n < 1); 22683#L12 assume 1 == ~n;#res := 1; 22679#fibo1FINAL assume true; 22676#fibo1EXIT >#48#return; 22674#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 22672#fibo2FINAL assume true; 22669#fibo2EXIT >#50#return; 22666#L15-1 call #t~ret5 := fibo2(~n - 2);< 22668#fibo2ENTRY ~n := #in~n; 22738#L20 assume !(~n < 1); 22735#L22 assume !(1 == ~n); 22733#L25 call #t~ret6 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22918#L10 assume !(~n < 1); 22919#L12 assume !(1 == ~n); 22514#L15 call #t~ret4 := fibo2(~n - 1);< 22978#fibo2ENTRY ~n := #in~n; 22565#L20 assume !(~n < 1); 22510#L22 assume !(1 == ~n); 22513#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2021-11-23 13:55:19,654 INFO L793 eck$LassoCheckResult]: Loop: 22546#L15 call #t~ret4 := fibo2(~n - 1);< 23005#fibo2ENTRY ~n := #in~n; 23006#L20 assume !(~n < 1); 23058#L22 assume !(1 == ~n); 23007#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2021-11-23 13:55:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:19,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2021-11-23 13:55:19,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:19,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534795339] [2021-11-23 13:55:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:19,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-23 13:55:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:55:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:55:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:55:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-23 13:55:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 13:55:19,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:55:19,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534795339] [2021-11-23 13:55:19,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534795339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:55:19,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189261522] [2021-11-23 13:55:19,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:55:19,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:55:19,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:19,906 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:55:19,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-23 13:55:19,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:55:19,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:55:19,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:55:19,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 13:55:20,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 13:55:20,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189261522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:55:20,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:55:20,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2021-11-23 13:55:20,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599077232] [2021-11-23 13:55:20,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:55:20,359 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:55:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2021-11-23 13:55:20,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:55:20,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689562466] [2021-11-23 13:55:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:20,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:55:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:20,364 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:55:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:55:20,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:55:20,525 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:20,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:20,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:20,525 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:20,525 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:55:20,526 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:20,526 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:20,526 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:20,526 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-11-23 13:55:20,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:20,526 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:20,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:20,641 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:20,642 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:55:20,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:20,643 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:20,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:20,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:20,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-11-23 13:55:20,681 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:55:20,681 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:55:20,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:20,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:20,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:20,712 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:20,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-11-23 13:55:20,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:55:20,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:20,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Ended with exit code 0 [2021-11-23 13:55:20,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:20,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:20,756 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:20,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-11-23 13:55:20,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:55:20,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:55:23,172 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:55:23,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Ended with exit code 0 [2021-11-23 13:55:23,176 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:55:23,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:55:23,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:55:23,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:55:23,176 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:55:23,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:23,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:55:23,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:55:23,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-11-23 13:55:23,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:55:23,177 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:55:23,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:55:23,276 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:55:23,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:55:23,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:23,279 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:23,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-11-23 13:55:23,280 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 [2021-11-23 13:55:23,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:23,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:23,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:23,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:23,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:23,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:23,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:23,290 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:55:23,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:23,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:23,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:23,315 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:23,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-11-23 13:55:23,316 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 [2021-11-23 13:55:23,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:55:23,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:55:23,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:55:23,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:55:23,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:55:23,327 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:55:23,327 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:55:23,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:55:23,334 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:55:23,334 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:55:23,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:55:23,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:23,357 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:23,359 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:55:23,359 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:55:23,359 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:55:23,359 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-23 13:55:23,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-11-23 13:55:23,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:23,402 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:55:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:23,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:55:23,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:23,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:24,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:24,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:24,272 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-11-23 13:55:24,272 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:24,391 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 606 states and 738 transitions. Complement of second has 19 states. [2021-11-23 13:55:24,393 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 [2021-11-23 13:55:24,394 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2021-11-23 13:55:24,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-23 13:55:24,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:24,395 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:55:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:24,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:55:24,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:25,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:25,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:25,201 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2021-11-23 13:55:25,201 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:25,348 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 606 states and 738 transitions. Complement of second has 21 states. [2021-11-23 13:55:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2021-11-23 13:55:25,350 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2021-11-23 13:55:25,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-23 13:55:25,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:25,350 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:55:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:25,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:55:25,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:26,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:26,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:26,090 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 6 loop predicates [2021-11-23 13:55:26,090 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:26,232 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 1123 states and 1346 transitions. Complement of second has 33 states. [2021-11-23 13:55:26,232 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 [2021-11-23 13:55:26,233 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-11-23 13:55:26,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-23 13:55:26,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:26,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2021-11-23 13:55:26,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:26,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2021-11-23 13:55:26,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:55:26,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1123 states and 1346 transitions. [2021-11-23 13:55:26,249 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:55:26,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1123 states to 0 states and 0 transitions. [2021-11-23 13:55:26,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:55:26,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:55:26,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:55:26,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:55:26,250 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:55:26,251 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:55:26,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:55:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:55:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-23 13:55:26,252 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 12 states have internal predecessors, (46), 10 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:55:26,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:26,252 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-23 13:55:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:55:26,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-23 13:55:26,253 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:55:26,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:55:26,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:55:26,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:55:26,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:55:26,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:55:26,254 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:55:26,254 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:55:26,254 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:55:26,255 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-23 13:55:26,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:55:26,255 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:55:26,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-23 13:55:26,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:55:26 BoogieIcfgContainer [2021-11-23 13:55:26,265 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:55:26,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:55:26,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:55:26,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:55:26,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:42" (3/4) ... [2021-11-23 13:55:26,270 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:55:26,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:55:26,271 INFO L158 Benchmark]: Toolchain (without parser) took 44646.04ms. Allocated memory was 88.1MB in the beginning and 157.3MB in the end (delta: 69.2MB). Free memory was 53.9MB in the beginning and 89.0MB in the end (delta: -35.1MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-11-23 13:55:26,271 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory was 60.3MB in the beginning and 60.3MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:55:26,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.99ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 64.8MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:55:26,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.57ms. Allocated memory is still 88.1MB. Free memory was 64.8MB in the beginning and 63.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:55:26,273 INFO L158 Benchmark]: Boogie Preprocessor took 22.85ms. Allocated memory is still 88.1MB. Free memory was 63.6MB in the beginning and 62.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:55:26,274 INFO L158 Benchmark]: RCFGBuilder took 401.63ms. Allocated memory is still 88.1MB. Free memory was 62.6MB in the beginning and 53.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:55:26,274 INFO L158 Benchmark]: BuchiAutomizer took 43846.97ms. Allocated memory was 88.1MB in the beginning and 157.3MB in the end (delta: 69.2MB). Free memory was 53.7MB in the beginning and 90.0MB in the end (delta: -36.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-11-23 13:55:26,275 INFO L158 Benchmark]: Witness Printer took 4.51ms. Allocated memory is still 157.3MB. Free memory was 90.0MB in the beginning and 89.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:55:26,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory was 60.3MB in the beginning and 60.3MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.99ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 64.8MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.57ms. Allocated memory is still 88.1MB. Free memory was 64.8MB in the beginning and 63.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.85ms. Allocated memory is still 88.1MB. Free memory was 63.6MB in the beginning and 62.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 401.63ms. Allocated memory is still 88.1MB. Free memory was 62.6MB in the beginning and 53.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 43846.97ms. Allocated memory was 88.1MB in the beginning and 157.3MB in the end (delta: 69.2MB). Free memory was 53.7MB in the beginning and 90.0MB in the end (delta: -36.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Witness Printer took 4.51ms. Allocated memory is still 157.3MB. Free memory was 90.0MB in the beginning and 89.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (9 trivial, 3 deterministic, 4 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 \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 9 modules have a trivial ranking function, the largest among these consists of 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 43.7s and 11 iterations. TraceHistogramMax:7. Analysis of lassos took 23.8s. Construction of modules took 3.3s. Büchi inclusion checks took 15.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 14. Automata minimization 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 497 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had 575 states and ocurred in iteration 9. Nontrivial modules had stage [3, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1375 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1332 mSDsluCounter, 2086 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1578 mSDsCounter, 817 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4141 IncrementalHoareTripleChecker+Invalid, 4958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 817 mSolverCounterUnsat, 508 mSDtfsCounter, 4141 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf94 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf93 smp80 dnf100 smp100 tf110 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 32 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-23 13:55:26,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:26,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-11-23 13:55:26,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-23 13:55:26,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-23 13:55:27,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-11-23 13:55:27,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-23 13:55:27,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-11-23 13:55:27,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-11-23 13:55:27,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-11-23 13:55:28,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-23 13:55:28,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fa0dc68-70a2-49c2-84c9-4a1a97c442ae/bin/uautomizer-wIGwrQj20G/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