./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/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_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg --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 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:43:50,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:43:50,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:43:51,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:43:51,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:43:51,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:43:51,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:43:51,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:43:51,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:43:51,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:43:51,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:43:51,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:43:51,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:43:51,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:43:51,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:43:51,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:43:51,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:43:51,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:43:51,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:43:51,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:43:51,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:43:51,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:43:51,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:43:51,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:43:51,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:43:51,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:43:51,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:43:51,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:43:51,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:43:51,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:43:51,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:43:51,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:43:51,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:43:51,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:43:51,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:43:51,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:43:51,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:43:51,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:43:51,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:43:51,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:43:51,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:43:51,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:43:51,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:43:51,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:43:51,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:43:51,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:43:51,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:43:51,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:43:51,148 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:43:51,148 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:43:51,148 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:43:51,148 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:43:51,149 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:43:51,149 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:43:51,149 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:43:51,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:43:51,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:43:51,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:43:51,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:43:51,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:43:51,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:43:51,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:43:51,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:43:51,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:43:51,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:43:51,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:43:51,152 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:43:51,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:43:51,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:43:51,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:43:51,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:43:51,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:43:51,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:43:51,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:43:51,156 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:43:51,156 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_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2021-10-28 08:43:51,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:43:51,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:43:51,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:43:51,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:43:51,583 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:43:51,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-10-28 08:43:51,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/data/0dc4897f7/50703c7507954b4ea21076aa573adb5d/FLAG161d33357 [2021-10-28 08:43:52,181 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:43:52,181 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-10-28 08:43:52,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/data/0dc4897f7/50703c7507954b4ea21076aa573adb5d/FLAG161d33357 [2021-10-28 08:43:52,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/data/0dc4897f7/50703c7507954b4ea21076aa573adb5d [2021-10-28 08:43:52,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:43:52,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:43:52,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:43:52,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:43:52,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:43:52,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e67bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52, skipping insertion in model container [2021-10-28 08:43:52,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:43:52,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:43:52,678 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-10-28 08:43:52,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:43:52,689 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:43:52,703 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-10-28 08:43:52,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:43:52,720 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:43:52,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52 WrapperNode [2021-10-28 08:43:52,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:43:52,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:43:52,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:43:52,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:43:52,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:43:52,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:43:52,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:43:52,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:43:52,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:43:52,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:43:52,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:43:52,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:43:52,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (1/1) ... [2021-10-28 08:43:52,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:52,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:52,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:52,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-28 08:43:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-28 08:43:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-28 08:43:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-28 08:43:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:43:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:43:53,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:43:53,119 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 08:43:53,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:53 BoogieIcfgContainer [2021-10-28 08:43:53,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:43:53,123 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:43:53,123 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:43:53,127 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:43:53,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:43:53,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:43:52" (1/3) ... [2021-10-28 08:43:53,130 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@511b3fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:43:53, skipping insertion in model container [2021-10-28 08:43:53,130 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:43:53,131 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:52" (2/3) ... [2021-10-28 08:43:53,131 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@511b3fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:43:53, skipping insertion in model container [2021-10-28 08:43:53,131 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:43:53,132 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:53" (3/3) ... [2021-10-28 08:43:53,133 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-1.c [2021-10-28 08:43:53,202 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:43:53,202 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:43:53,203 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:43:53,203 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:43:53,203 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:43:53,203 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:43:53,204 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:43:53,205 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:43:53,226 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) [2021-10-28 08:43:53,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:43:53,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:43:53,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:43:53,271 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 08:43:53,271 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:53,271 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:43:53,272 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) [2021-10-28 08:43:53,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:43:53,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:43:53,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:43:53,276 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 08:43:53,276 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:53,282 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 15#L39true call main_#t~ret11 := fibo1(main_~x~0);< 5#fibo1ENTRYtrue [2021-10-28 08:43:53,283 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret7 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret9 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-10-28 08:43:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-10-28 08:43:53,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:53,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60230242] [2021-10-28 08:43:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:53,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:53,407 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:53,444 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-10-28 08:43:53,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:53,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000178819] [2021-10-28 08:43:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:53,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:53,457 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:53,466 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:53,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:53,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-10-28 08:43:53,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:53,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119215532] [2021-10-28 08:43:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:53,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:53,490 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:53,517 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:53,857 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:43:53,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:43:53,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:43:53,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:43:53,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:43:53,859 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:53,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:43:53,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:43:53,861 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-10-28 08:43:53,861 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:43:53,861 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:43:53,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:53,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:43:54,107 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:43:54,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 08:43:54,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,155 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 08:43:54,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 08:43:54,298 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,299 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 08:43:54,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 08:43:54,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,434 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,434 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-28 08:43:54,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 08:43:54,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,497 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,497 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 08:43:54,587 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,587 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 08:43:54,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 08:43:54,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:54,634 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:54,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,665 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 08:43:54,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:54,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 08:43:54,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:43:54,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:54,790 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:43:54,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,797 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:43:54,798 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:43:54,798 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:43:54,798 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:43:54,798 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:43:54,798 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,798 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:43:54,798 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:43:54,798 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-10-28 08:43:54,798 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:43:54,799 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:43:54,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:54,925 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:43:54,931 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:43:54,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,947 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:54,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 08:43:54,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:54,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:54,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:54,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:54,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:54,961 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:54,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:54,964 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:54,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:54,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:54,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:54,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 08:43:55,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,004 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,004 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,017 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:55,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:55,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,049 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 08:43:55,050 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:55,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,067 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:55,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:55,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,097 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 08:43:55,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:55,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,143 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:55,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-10-28 08:43:55,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,171 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 08:43:55,173 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:55,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,197 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:55,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:55,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 08:43:55,235 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:55,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:55,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:55,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,330 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:55,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 08:43:55,374 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:55,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:55,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,410 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 08:43:55,412 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:55,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,425 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:55,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:55,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,451 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 08:43:55,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:55,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:55,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:55,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:55,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:55,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:55,469 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:55,469 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:55,494 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:43:55,498 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 08:43:55,499 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:43:55,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:55,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:55,506 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:55,523 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:43:55,523 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:43:55,523 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:43:55,524 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-10-28 08:43:55,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 08:43:55,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:55,571 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:43:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:55,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:43:55,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:55,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:43:55,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:55,902 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 [2021-10-28 08:43:55,911 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) [2021-10-28 08:43:56,211 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. [2021-10-28 08:43:56,212 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 [2021-10-28 08:43:56,214 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) [2021-10-28 08:43:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-10-28 08:43:56,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-28 08:43:56,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:43:56,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-28 08:43:56,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:43:56,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-10-28 08:43:56,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:43:56,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-10-28 08:43:56,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:43:56,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-10-28 08:43:56,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 08:43:56,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-28 08:43:56,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-10-28 08:43:56,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:43:56,271 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-10-28 08:43:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-10-28 08:43:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 08:43:56,303 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) [2021-10-28 08:43:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-10-28 08:43:56,306 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 08:43:56,306 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 08:43:56,306 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:43:56,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-10-28 08:43:56,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:43:56,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:43:56,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:43:56,310 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:56,311 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:56,311 INFO L791 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 197#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 214#L39 call main_#t~ret11 := fibo1(main_~x~0);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret7 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret9 := 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 [2021-10-28 08:43:56,311 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret10 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret7 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret9 := 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 [2021-10-28 08:43:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-10-28 08:43:56,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:56,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264707614] [2021-10-28 08:43:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:56,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:43:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:43:56,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:56,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264707614] [2021-10-28 08:43:56,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264707614] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:56,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:56,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:43:56,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442868781] [2021-10-28 08:43:56,461 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:43:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-10-28 08:43:56,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:56,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978676899] [2021-10-28 08:43:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:56,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:43:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:43:56,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:56,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978676899] [2021-10-28 08:43:56,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978676899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:56,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:56,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:43:56,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621189615] [2021-10-28 08:43:56,520 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:43:56,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:43:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:43:56,527 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) [2021-10-28 08:43:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:56,620 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-28 08:43:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:43:56,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-10-28 08:43:56,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:43:56,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-10-28 08:43:56,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-10-28 08:43:56,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-28 08:43:56,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-10-28 08:43:56,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:43:56,647 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-10-28 08:43:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-10-28 08:43:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-28 08:43:56,662 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) [2021-10-28 08:43:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-10-28 08:43:56,665 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 08:43:56,665 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 08:43:56,665 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:43:56,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-10-28 08:43:56,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:43:56,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:43:56,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:43:56,669 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:56,669 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:56,670 INFO L791 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 342#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 360#L39 call main_#t~ret11 := fibo1(main_~x~0);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret9 := 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 [2021-10-28 08:43:56,670 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret10 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret7 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := 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 [2021-10-28 08:43:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-10-28 08:43:56,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:56,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752090575] [2021-10-28 08:43:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:56,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:43:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:56,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:56,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752090575] [2021-10-28 08:43:56,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752090575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:43:56,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296870632] [2021-10-28 08:43:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:56,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:43:56,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:56,784 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:43:56,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 08:43:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:56,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:43:56,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:56,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:56,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296870632] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:43:56,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:43:56,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 08:43:56,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725050212] [2021-10-28 08:43:56,993 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:43:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-10-28 08:43:56,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:56,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712225605] [2021-10-28 08:43:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:56,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:57,003 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:57,013 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:57,268 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:43:57,269 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:43:57,269 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:43:57,269 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:43:57,269 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:43:57,269 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:57,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:43:57,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:43:57,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-10-28 08:43:57,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:43:57,270 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:43:57,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:57,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:43:57,368 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:43:57,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:57,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:57,371 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:57,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:57,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:57,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 08:43:57,407 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:57,407 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:57,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:57,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:57,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:57,449 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:57,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:57,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:57,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 08:43:57,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:57,462 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:57,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:57,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:57,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:57,490 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:57,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 08:43:57,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:57,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:57,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:57,501 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:57,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:57,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:57,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:57,531 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:57,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 08:43:57,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:57,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:57,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:43:57,543 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:43:57,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 08:43:57,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:57,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:57,569 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:57,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 08:43:57,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:43:57,571 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:57,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:57,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:57,615 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:57,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:43:57,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:43:57,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 08:43:59,034 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:43:59,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:59,038 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:43:59,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:43:59,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:43:59,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:43:59,038 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:43:59,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:59,039 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:43:59,039 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:43:59,039 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-10-28 08:43:59,039 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:43:59,039 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:43:59,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:43:59,142 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:43:59,143 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:43:59,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:59,144 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:59,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:59,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:59,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:59,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:59,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:59,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:59,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:59,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:59,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 08:43:59,182 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:59,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:59,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:59,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:59,217 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:59,219 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:59,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 08:43:59,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:59,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:59,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:59,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:59,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:59,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:59,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:59,231 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:59,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-28 08:43:59,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:59,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:59,267 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:59,270 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:59,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:59,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:59,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:59,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:59,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:59,283 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:59,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:59,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 08:43:59,306 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:43:59,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:59,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:59,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:59,350 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:59,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:43:59,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:43:59,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:43:59,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:43:59,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:43:59,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:43:59,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:43:59,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:43:59,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 08:43:59,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:43:59,394 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 08:43:59,394 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:43:59,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:43:59,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:59,395 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:59,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 08:43:59,398 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:43:59,398 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:43:59,398 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:43:59,398 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-10-28 08:43:59,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:59,422 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:43:59,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:59,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:43:59,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:59,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:43:59,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:59,934 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 [2021-10-28 08:43:59,934 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) [2021-10-28 08:44:00,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:00,419 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. [2021-10-28 08:44:00,421 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 [2021-10-28 08:44:00,421 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) [2021-10-28 08:44:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-10-28 08:44:00,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-10-28 08:44:00,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:00,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-10-28 08:44:00,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:00,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-10-28 08:44:00,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:00,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-10-28 08:44:00,434 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:44:00,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-10-28 08:44:00,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-10-28 08:44:00,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-10-28 08:44:00,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-10-28 08:44:00,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:00,443 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-10-28 08:44:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-10-28 08:44:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-10-28 08:44:00,460 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) [2021-10-28 08:44:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-10-28 08:44:00,463 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-10-28 08:44:00,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:44:00,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:44:00,465 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:44:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:00,615 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2021-10-28 08:44:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:44:00,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2021-10-28 08:44:00,623 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:44:00,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2021-10-28 08:44:00,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-28 08:44:00,630 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-28 08:44:00,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2021-10-28 08:44:00,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:00,631 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2021-10-28 08:44:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2021-10-28 08:44:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-28 08:44:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 113 states have internal predecessors, (130), 38 states have call successors, (40), 20 states have call predecessors, (40), 26 states have return successors, (55), 33 states have call predecessors, (55), 36 states have call successors, (55) [2021-10-28 08:44:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2021-10-28 08:44:00,650 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 08:44:00,651 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 08:44:00,651 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:44:00,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2021-10-28 08:44:00,654 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:44:00,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:00,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:00,660 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 08:44:00,660 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:44:00,661 INFO L791 eck$LassoCheckResult]: Stem: 1156#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1157#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 1185#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1219#fibo1ENTRY ~n := #in~n; 1207#L10 assume !(~n < 1); 1202#L12 assume !(1 == ~n); 1165#L15 call #t~ret7 := fibo2(~n - 1);< 1208#fibo2ENTRY ~n := #in~n; 1215#L20 assume !(~n < 1); 1164#L22 assume !(1 == ~n); 1166#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume !(~n < 1); 1247#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1205#fibo2EXIT >#50#return; 1187#L15-1 call #t~ret8 := fibo2(~n - 2);< 1191#fibo2ENTRY ~n := #in~n; 1315#L20 assume !(~n < 1); 1314#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1251#L10 assume !(~n < 1); 1255#L12 assume 1 == ~n;#res := 1; 1256#fibo1FINAL assume true; 1245#fibo1EXIT >#46#return; 1236#L25-1 call #t~ret10 := fibo1(~n - 2);< 1178#fibo1ENTRY ~n := #in~n; 1241#L10 assume !(~n < 1); 1240#L12 assume !(1 == ~n); 1177#L15 call #t~ret7 := fibo2(~n - 1);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume ~n < 1;#res := 0; 1232#fibo2FINAL assume true; 1239#fibo2EXIT >#50#return; 1176#L15-1 call #t~ret8 := fibo2(~n - 2);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume !(~n < 1); 1227#L22 assume 1 == ~n;#res := 1; 1228#fibo2FINAL assume true; 1304#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-28 08:44:00,661 INFO L793 eck$LassoCheckResult]: Loop: 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-28 08:44:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-10-28 08:44:00,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:00,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465053950] [2021-10-28 08:44:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:00,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 08:44:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:44:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:44:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 08:44:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:44:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-28 08:44:00,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:00,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465053950] [2021-10-28 08:44:00,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465053950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:00,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568157986] [2021-10-28 08:44:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:01,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:01,006 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 08:44:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:44:01,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 91 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-28 08:44:01,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568157986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:01,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:01,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2021-10-28 08:44:01,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202932849] [2021-10-28 08:44:01,478 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-10-28 08:44:01,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:01,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082553788] [2021-10-28 08:44:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:01,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:44:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:44:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 08:44:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:44:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-28 08:44:01,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:01,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082553788] [2021-10-28 08:44:01,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082553788] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:01,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458926399] [2021-10-28 08:44:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:01,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:01,678 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:01,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 08:44:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:01,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:44:01,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 08:44:02,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458926399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:02,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:02,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-10-28 08:44:02,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4661509] [2021-10-28 08:44:02,043 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:44:02,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:02,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:44:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:44:02,045 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2021-10-28 08:44:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:02,322 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2021-10-28 08:44:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:44:02,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2021-10-28 08:44:02,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:44:02,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2021-10-28 08:44:02,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-28 08:44:02,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-28 08:44:02,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2021-10-28 08:44:02,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:02,336 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-10-28 08:44:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2021-10-28 08:44:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2021-10-28 08:44:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.182608695652174) internal successors, (136), 125 states have internal predecessors, (136), 38 states have call successors, (39), 24 states have call predecessors, (39), 31 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) [2021-10-28 08:44:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-10-28 08:44:02,356 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 08:44:02,356 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 08:44:02,356 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 08:44:02,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2021-10-28 08:44:02,359 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:44:02,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:02,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:02,362 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:02,362 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:44:02,362 INFO L791 eck$LassoCheckResult]: Stem: 2262#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2263#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 2297#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2331#fibo1ENTRY ~n := #in~n; 2320#L10 assume !(~n < 1); 2313#L12 assume !(1 == ~n); 2314#L15 call #t~ret7 := fibo2(~n - 1);< 2322#fibo2ENTRY ~n := #in~n; 2403#L20 assume !(~n < 1); 2402#L22 assume !(1 == ~n); 2306#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2343#L10 assume !(~n < 1); 2342#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2336#fibo2ENTRY ~n := #in~n; 2366#L20 assume !(~n < 1); 2364#L22 assume !(1 == ~n); 2273#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2346#L10 assume !(~n < 1); 2375#L12 assume 1 == ~n;#res := 1; 2376#fibo1FINAL assume true; 2421#fibo1EXIT >#46#return; 2416#L25-1 call #t~ret10 := fibo1(~n - 2);< 2418#fibo1ENTRY ~n := #in~n; 2422#L10 assume ~n < 1;#res := 0; 2419#fibo1FINAL assume true; 2415#fibo1EXIT >#48#return; 2411#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2409#fibo2FINAL assume true; 2383#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-28 08:44:02,363 INFO L793 eck$LassoCheckResult]: Loop: 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#46#return; 2276#L25-1 call #t~ret10 := fibo1(~n - 2);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#48#return; 2391#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2388#fibo2FINAL assume true; 2386#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-28 08:44:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-10-28 08:44:02,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:02,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806304277] [2021-10-28 08:44:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:02,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 08:44:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:44:02,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:02,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806304277] [2021-10-28 08:44:02,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806304277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:02,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785324448] [2021-10-28 08:44:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:02,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:02,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:02,533 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:02,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 08:44:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 08:44:02,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:44:02,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785324448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:02,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:02,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 15 [2021-10-28 08:44:02,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682558185] [2021-10-28 08:44:02,813 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:02,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-10-28 08:44:02,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:02,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564051698] [2021-10-28 08:44:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:02,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:44:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:44:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-28 08:44:03,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564051698] [2021-10-28 08:44:03,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564051698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131341284] [2021-10-28 08:44:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:03,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:03,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:03,043 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:03,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 08:44:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 08:44:03,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 08:44:03,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131341284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:03,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:03,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-28 08:44:03,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829314091] [2021-10-28 08:44:03,430 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:44:03,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:44:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:44:03,432 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 08:44:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:03,733 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2021-10-28 08:44:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:44:03,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 268 transitions. [2021-10-28 08:44:03,738 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:44:03,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 203 states and 264 transitions. [2021-10-28 08:44:03,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2021-10-28 08:44:03,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-10-28 08:44:03,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 264 transitions. [2021-10-28 08:44:03,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:03,746 INFO L681 BuchiCegarLoop]: Abstraction has 203 states and 264 transitions. [2021-10-28 08:44:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 264 transitions. [2021-10-28 08:44:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2021-10-28 08:44:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 132 states have internal predecessors, (143), 39 states have call successors, (40), 25 states have call predecessors, (40), 33 states have return successors, (66), 36 states have call predecessors, (66), 37 states have call successors, (66) [2021-10-28 08:44:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 249 transitions. [2021-10-28 08:44:03,790 INFO L704 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-28 08:44:03,790 INFO L587 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-28 08:44:03,790 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 08:44:03,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 194 states and 249 transitions. [2021-10-28 08:44:03,792 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:44:03,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:03,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:03,799 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:03,800 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:03,800 INFO L791 eck$LassoCheckResult]: Stem: 3059#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3060#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 3092#L39 call main_#t~ret11 := fibo1(main_~x~0);< 3125#fibo1ENTRY ~n := #in~n; 3181#L10 assume !(~n < 1); 3180#L12 assume !(1 == ~n); 3069#L15 call #t~ret7 := fibo2(~n - 1);< 3179#fibo2ENTRY ~n := #in~n; 3118#L20 assume !(~n < 1); 3068#L22 assume !(1 == ~n); 3070#L25 call #t~ret9 := fibo1(~n - 1);< 3086#fibo1ENTRY ~n := #in~n; 3087#L10 assume !(~n < 1); 3109#L12 assume !(1 == ~n); 3110#L15 call #t~ret7 := fibo2(~n - 1);< 3115#fibo2ENTRY ~n := #in~n; 3124#L20 assume !(~n < 1); 3170#L22 assume !(1 == ~n); 3105#L25 call #t~ret9 := fibo1(~n - 1);< 3152#fibo1ENTRY ~n := #in~n; 3153#L10 assume !(~n < 1); 3177#L12 assume !(1 == ~n); 3168#L15 call #t~ret7 := fibo2(~n - 1);< 3169#fibo2ENTRY ~n := #in~n; 3174#L20 assume !(~n < 1); 3172#L22 assume 1 == ~n;#res := 1; 3171#fibo2FINAL assume true; 3167#fibo2EXIT >#50#return; 3165#L15-1 call #t~ret8 := fibo2(~n - 2);< 3166#fibo2ENTRY ~n := #in~n; 3175#L20 assume ~n < 1;#res := 0; 3173#fibo2FINAL assume true; 3164#fibo2EXIT >#52#return; 3163#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 3161#fibo1FINAL assume true; 3155#fibo1EXIT >#46#return; 3146#L25-1 call #t~ret10 := fibo1(~n - 2);< 3154#fibo1ENTRY ~n := #in~n; 3243#L10 assume ~n < 1;#res := 0; 3244#fibo1FINAL assume true; 3238#fibo1EXIT >#48#return; 3219#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 3218#fibo2FINAL assume true; 3215#fibo2EXIT >#50#return; 3065#L15-1 call #t~ret8 := fibo2(~n - 2);< 3123#fibo2ENTRY [2021-10-28 08:44:03,800 INFO L793 eck$LassoCheckResult]: Loop: 3123#fibo2ENTRY ~n := #in~n; 3116#L20 assume !(~n < 1); 3061#L22 assume !(1 == ~n); 3067#L25 call #t~ret9 := fibo1(~n - 1);< 3200#fibo1ENTRY ~n := #in~n; 3213#L10 assume !(~n < 1); 3209#L12 assume !(1 == ~n); 3064#L15 call #t~ret7 := fibo2(~n - 1);< 3123#fibo2ENTRY [2021-10-28 08:44:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1055972758, now seen corresponding path program 1 times [2021-10-28 08:44:03,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:03,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112254043] [2021-10-28 08:44:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:03,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 08:44:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:44:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 08:44:03,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:03,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112254043] [2021-10-28 08:44:03,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112254043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:03,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612409544] [2021-10-28 08:44:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:03,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:03,918 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:03,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-28 08:44:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:04,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:44:04,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 08:44:04,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612409544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:04,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:04,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 20 [2021-10-28 08:44:04,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030383766] [2021-10-28 08:44:04,424 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:04,425 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2021-10-28 08:44:04,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:04,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270046973] [2021-10-28 08:44:04,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:04,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:04,431 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:44:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:04,437 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:44:04,580 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:04,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:04,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:04,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:04,580 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:44:04,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:04,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:04,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:04,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration6_Loop [2021-10-28 08:44:04,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:04,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:04,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,666 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:04,666 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:44:04,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:04,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:04,669 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:04,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 08:44:04,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:04,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:04,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:04,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:04,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:04,744 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:04,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 08:44:04,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:44:04,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:04,861 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:44:04,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:04,868 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:04,868 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:04,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:04,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:04,868 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:44:04,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:04,868 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:04,868 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:04,868 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration6_Loop [2021-10-28 08:44:04,868 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:04,868 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:04,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:04,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:04,962 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:44:04,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:04,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:04,967 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:04,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 08:44:04,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:04,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:04,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:04,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:04,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:04,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:04,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:04,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:05,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:05,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:05,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:05,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:05,062 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:05,067 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:05,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:05,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:05,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:05,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:05,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:05,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:05,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:05,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 08:44:05,094 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:05,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:05,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:05,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:05,138 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:05,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:05,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 08:44:05,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:05,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:05,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:05,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:05,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:05,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:05,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:05,163 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:44:05,166 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 08:44:05,166 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:44:05,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:05,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:05,168 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:05,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 08:44:05,169 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:44:05,169 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:44:05,169 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:44:05,169 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-28 08:44:05,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:05,194 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:44:05,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:05,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:44:05,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:05,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:06,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:06,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:06,234 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 [2021-10-28 08:44:06,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 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, (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) [2021-10-28 08:44:06,445 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. 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, (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 349 states and 444 transitions. Complement of second has 24 states. [2021-10-28 08:44:06,450 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 [2021-10-28 08:44:06,450 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, (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) [2021-10-28 08:44:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-28 08:44:06,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-28 08:44:06,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:06,452 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:06,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:06,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:44:06,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:07,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:07,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:07,415 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 [2021-10-28 08:44:07,416 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 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, (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) [2021-10-28 08:44:07,617 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. 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, (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 349 states and 444 transitions. Complement of second has 24 states. [2021-10-28 08:44:07,618 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 [2021-10-28 08:44:07,618 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, (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) [2021-10-28 08:44:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-28 08:44:07,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-28 08:44:07,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:07,622 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:07,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:44:07,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:08,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:08,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:08,399 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 [2021-10-28 08:44:08,400 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 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, (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) [2021-10-28 08:44:08,601 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. 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, (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 426 states and 529 transitions. Complement of second has 23 states. [2021-10-28 08:44:08,604 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 [2021-10-28 08:44:08,605 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, (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) [2021-10-28 08:44:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-28 08:44:08,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-28 08:44:08,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:08,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 53 letters. Loop has 8 letters. [2021-10-28 08:44:08,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:08,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 16 letters. [2021-10-28 08:44:08,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:08,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 426 states and 529 transitions. [2021-10-28 08:44:08,620 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-10-28 08:44:08,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 426 states to 329 states and 427 transitions. [2021-10-28 08:44:08,630 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 180 [2021-10-28 08:44:08,630 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2021-10-28 08:44:08,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 329 states and 427 transitions. [2021-10-28 08:44:08,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:08,631 INFO L681 BuchiCegarLoop]: Abstraction has 329 states and 427 transitions. [2021-10-28 08:44:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states and 427 transitions. [2021-10-28 08:44:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 297. [2021-10-28 08:44:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 197 states have (on average 1.1878172588832487) internal successors, (234), 212 states have internal predecessors, (234), 55 states have call successors, (56), 44 states have call predecessors, (56), 45 states have return successors, (90), 40 states have call predecessors, (90), 53 states have call successors, (90) [2021-10-28 08:44:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 380 transitions. [2021-10-28 08:44:08,681 INFO L704 BuchiCegarLoop]: Abstraction has 297 states and 380 transitions. [2021-10-28 08:44:08,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 08:44:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-28 08:44:08,683 INFO L87 Difference]: Start difference. First operand 297 states and 380 transitions. Second operand has 20 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 12 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 6 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 08:44:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:09,361 INFO L93 Difference]: Finished difference Result 405 states and 576 transitions. [2021-10-28 08:44:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 08:44:09,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 576 transitions. [2021-10-28 08:44:09,371 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-10-28 08:44:09,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 405 states and 576 transitions. [2021-10-28 08:44:09,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 246 [2021-10-28 08:44:09,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-10-28 08:44:09,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 405 states and 576 transitions. [2021-10-28 08:44:09,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:09,384 INFO L681 BuchiCegarLoop]: Abstraction has 405 states and 576 transitions. [2021-10-28 08:44:09,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states and 576 transitions. [2021-10-28 08:44:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 369. [2021-10-28 08:44:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 236 states have (on average 1.194915254237288) internal successors, (282), 256 states have internal predecessors, (282), 78 states have call successors, (80), 48 states have call predecessors, (80), 55 states have return successors, (146), 64 states have call predecessors, (146), 76 states have call successors, (146) [2021-10-28 08:44:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2021-10-28 08:44:09,415 INFO L704 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-28 08:44:09,416 INFO L587 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-28 08:44:09,416 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 08:44:09,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2021-10-28 08:44:09,420 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-28 08:44:09,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:09,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:09,424 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:09,425 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:09,427 INFO L791 eck$LassoCheckResult]: Stem: 5923#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5924#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 5955#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6004#fibo1ENTRY ~n := #in~n; 6042#L10 assume !(~n < 1); 6041#L12 assume !(1 == ~n); 6037#L15 call #t~ret7 := fibo2(~n - 1);< 6040#fibo2ENTRY ~n := #in~n; 6039#L20 assume !(~n < 1); 6038#L22 assume !(1 == ~n); 6006#L25 call #t~ret9 := fibo1(~n - 1);< 6036#fibo1ENTRY ~n := #in~n; 6035#L10 assume !(~n < 1); 6034#L12 assume !(1 == ~n); 6017#L15 call #t~ret7 := fibo2(~n - 1);< 6018#fibo2ENTRY ~n := #in~n; 6027#L20 assume !(~n < 1); 6028#L22 assume !(1 == ~n); 5965#L25 call #t~ret9 := fibo1(~n - 1);< 6029#fibo1ENTRY ~n := #in~n; 6030#L10 assume !(~n < 1); 6125#L12 assume !(1 == ~n); 6116#L15 call #t~ret7 := fibo2(~n - 1);< 6117#fibo2ENTRY ~n := #in~n; 6123#L20 assume !(~n < 1); 6122#L22 assume 1 == ~n;#res := 1; 6120#fibo2FINAL assume true; 6115#fibo2EXIT >#50#return; 6112#L15-1 call #t~ret8 := fibo2(~n - 2);< 6113#fibo2ENTRY ~n := #in~n; 6118#L20 assume ~n < 1;#res := 0; 6114#fibo2FINAL assume true; 6111#fibo2EXIT >#52#return; 6110#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6109#fibo1FINAL assume true; 6108#fibo1EXIT >#46#return; 6099#L25-1 call #t~ret10 := fibo1(~n - 2);< 5946#fibo1ENTRY ~n := #in~n; 6102#L10 assume !(~n < 1); 6101#L12 assume !(1 == ~n); 5945#L15 call #t~ret7 := fibo2(~n - 1);< 6098#fibo2ENTRY ~n := #in~n; 6097#L20 assume !(~n < 1); 6094#L22 assume 1 == ~n;#res := 1; 6095#fibo2FINAL assume true; 6210#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-28 08:44:09,429 INFO L793 eck$LassoCheckResult]: Loop: 6143#L15-1 call #t~ret8 := fibo2(~n - 2);< 6142#fibo2ENTRY ~n := #in~n; 6144#L20 assume !(~n < 1); 6228#L22 assume !(1 == ~n); 5986#L25 call #t~ret9 := fibo1(~n - 1);< 5962#fibo1ENTRY ~n := #in~n; 5985#L10 assume !(~n < 1); 5987#L12 assume !(1 == ~n); 5960#L15 call #t~ret7 := fibo2(~n - 1);< 5995#fibo2ENTRY ~n := #in~n; 6003#L20 assume !(~n < 1); 6216#L22 assume 1 == ~n;#res := 1; 6214#fibo2FINAL assume true; 6212#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-28 08:44:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash 881386511, now seen corresponding path program 1 times [2021-10-28 08:44:09,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:09,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387160968] [2021-10-28 08:44:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:09,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:44:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-10-28 08:44:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 08:44:09,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:09,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387160968] [2021-10-28 08:44:09,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387160968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:09,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864720231] [2021-10-28 08:44:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:09,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:09,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:09,670 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:09,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 08:44:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:10,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:44:10,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:44:10,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864720231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:10,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:10,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2021-10-28 08:44:10,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128474062] [2021-10-28 08:44:10,282 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2021-10-28 08:44:10,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:10,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228362960] [2021-10-28 08:44:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:10,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:10,291 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:44:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:10,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:44:10,480 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:10,480 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:10,480 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:10,480 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:10,480 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:44:10,480 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,481 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:10,481 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:10,481 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-10-28 08:44:10,481 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:10,481 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:10,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:10,555 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:10,555 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:44:10,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,556 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 08:44:10,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:10,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:10,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:10,566 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:10,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-10-28 08:44:10,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,587 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 08:44:10,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:10,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:10,597 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:10,597 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:10,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:10,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,619 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 08:44:10,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:10,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:10,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:10,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:10,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-28 08:44:10,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,651 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 08:44:10,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:10,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:10,675 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:10,675 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:10,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:10,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,709 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 08:44:10,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:10,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:10,718 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:10,718 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:10,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:10,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,739 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 08:44:10,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:10,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:10,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:10,758 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:10,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-28 08:44:10,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,779 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 08:44:10,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:10,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:10,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-10-28 08:44:10,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:10,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:10,813 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:10,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 08:44:10,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:44:10,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:11,857 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:44:11,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:11,860 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:11,860 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:11,860 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:11,860 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:11,860 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:44:11,860 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:11,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:11,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:11,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-10-28 08:44:11,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:11,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:11,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:11,937 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:11,937 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:44:11,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:11,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:11,950 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:11,953 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:11,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:11,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:11,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:11,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:11,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:11,965 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:11,965 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:11,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 08:44:11,976 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:12,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-10-28 08:44:12,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,004 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:12,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:12,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:12,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 08:44:12,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:12,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:12,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:12,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:12,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:12,036 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:12,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-28 08:44:12,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,059 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 08:44:12,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:12,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:12,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:12,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:12,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:12,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:12,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:12,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:12,070 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:12,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-10-28 08:44:12,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,093 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 08:44:12,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:12,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:12,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:12,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:12,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:12,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:12,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:12,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:12,130 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:12,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:12,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,164 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,171 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:12,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:12,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:12,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:12,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:12,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:12,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:12,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:12,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 08:44:12,206 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:12,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:12,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,250 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:12,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:12,265 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:12,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:12,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:12,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:12,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:12,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:12,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 08:44:12,280 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:12,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-10-28 08:44:12,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,305 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 08:44:12,307 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:12,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:12,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:12,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:12,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:12,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:12,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:12,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:12,317 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:12,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-10-28 08:44:12,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,341 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 08:44:12,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:12,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:12,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:12,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:12,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:12,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:12,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:12,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:12,356 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:44:12,358 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 08:44:12,359 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:44:12,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:12,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:12,362 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:12,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 08:44:12,363 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:44:12,363 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:44:12,363 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:44:12,363 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 08:44:12,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-10-28 08:44:12,388 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:44:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:12,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:44:12,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:13,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:44:13,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:13,215 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 [2021-10-28 08:44:13,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 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) [2021-10-28 08:44:13,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. 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 1274 states and 1770 transitions. Complement of second has 40 states. [2021-10-28 08:44:13,660 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 [2021-10-28 08:44:13,661 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) [2021-10-28 08:44:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 67 transitions. [2021-10-28 08:44:13,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 67 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-28 08:44:13,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:13,662 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:13,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:44:13,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:14,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:14,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:44:14,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:14,449 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 [2021-10-28 08:44:14,450 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 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) [2021-10-28 08:44:14,778 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. 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 582 states and 785 transitions. Complement of second has 26 states. [2021-10-28 08:44:14,779 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 [2021-10-28 08:44:14,779 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) [2021-10-28 08:44:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 46 transitions. [2021-10-28 08:44:14,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 46 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-28 08:44:14,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:14,781 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:14,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:14,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:44:14,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:15,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:44:15,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:15,582 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 [2021-10-28 08:44:15,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 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) [2021-10-28 08:44:16,058 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. 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 2713 states and 3811 transitions. Complement of second has 124 states. [2021-10-28 08:44:16,058 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 [2021-10-28 08:44:16,059 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) [2021-10-28 08:44:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2021-10-28 08:44:16,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-28 08:44:16,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:16,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 60 letters. Loop has 14 letters. [2021-10-28 08:44:16,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:16,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 28 letters. [2021-10-28 08:44:16,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:16,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2713 states and 3811 transitions. [2021-10-28 08:44:16,118 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 157 [2021-10-28 08:44:16,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2713 states to 2095 states and 3043 transitions. [2021-10-28 08:44:16,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 575 [2021-10-28 08:44:16,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 677 [2021-10-28 08:44:16,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2095 states and 3043 transitions. [2021-10-28 08:44:16,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:16,173 INFO L681 BuchiCegarLoop]: Abstraction has 2095 states and 3043 transitions. [2021-10-28 08:44:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states and 3043 transitions. [2021-10-28 08:44:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1775. [2021-10-28 08:44:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1140 states have (on average 1.1771929824561405) internal successors, (1342), 1251 states have internal predecessors, (1342), 375 states have call successors, (405), 220 states have call predecessors, (405), 260 states have return successors, (751), 303 states have call predecessors, (751), 373 states have call successors, (751) [2021-10-28 08:44:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2498 transitions. [2021-10-28 08:44:16,284 INFO L704 BuchiCegarLoop]: Abstraction has 1775 states and 2498 transitions. [2021-10-28 08:44:16,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 08:44:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-10-28 08:44:16,286 INFO L87 Difference]: Start difference. First operand 1775 states and 2498 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 10 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-28 08:44:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:16,785 INFO L93 Difference]: Finished difference Result 2563 states and 3815 transitions. [2021-10-28 08:44:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 08:44:16,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2563 states and 3815 transitions. [2021-10-28 08:44:16,831 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 232 [2021-10-28 08:44:16,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2563 states to 2560 states and 3811 transitions. [2021-10-28 08:44:16,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 824 [2021-10-28 08:44:16,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 824 [2021-10-28 08:44:16,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2560 states and 3811 transitions. [2021-10-28 08:44:16,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:16,911 INFO L681 BuchiCegarLoop]: Abstraction has 2560 states and 3811 transitions. [2021-10-28 08:44:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states and 3811 transitions. [2021-10-28 08:44:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2382. [2021-10-28 08:44:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1519 states have (on average 1.1981566820276497) internal successors, (1820), 1658 states have internal predecessors, (1820), 556 states have call successors, (594), 295 states have call predecessors, (594), 307 states have return successors, (1169), 428 states have call predecessors, (1169), 554 states have call successors, (1169) [2021-10-28 08:44:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3583 transitions. [2021-10-28 08:44:17,043 INFO L704 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-28 08:44:17,043 INFO L587 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-28 08:44:17,043 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 08:44:17,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2382 states and 3583 transitions. [2021-10-28 08:44:17,069 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-28 08:44:17,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:17,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:17,084 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:17,084 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 12, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 6, 5, 5, 5, 5, 4, 4, 1] [2021-10-28 08:44:17,085 INFO L791 eck$LassoCheckResult]: Stem: 16205#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 16206#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 16260#L39 call main_#t~ret11 := fibo1(main_~x~0);< 16308#fibo1ENTRY ~n := #in~n; 16384#L10 assume !(~n < 1); 16383#L12 assume !(1 == ~n); 16379#L15 call #t~ret7 := fibo2(~n - 1);< 16382#fibo2ENTRY ~n := #in~n; 16381#L20 assume !(~n < 1); 16380#L22 assume !(1 == ~n); 16375#L25 call #t~ret9 := fibo1(~n - 1);< 16378#fibo1ENTRY ~n := #in~n; 16377#L10 assume !(~n < 1); 16376#L12 assume !(1 == ~n); 16370#L15 call #t~ret7 := fibo2(~n - 1);< 16374#fibo2ENTRY ~n := #in~n; 16373#L20 assume !(~n < 1); 16372#L22 assume !(1 == ~n); 16353#L25 call #t~ret9 := fibo1(~n - 1);< 16368#fibo1ENTRY ~n := #in~n; 16365#L10 assume !(~n < 1); 16351#L12 assume !(1 == ~n); 16343#L15 call #t~ret7 := fibo2(~n - 1);< 16361#fibo2ENTRY ~n := #in~n; 16359#L20 assume !(~n < 1); 16355#L22 assume 1 == ~n;#res := 1; 16356#fibo2FINAL assume true; 16342#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16836#L20 assume !(~n < 1); 16834#L22 assume !(1 == ~n); 16831#L25 call #t~ret9 := fibo1(~n - 1);< 16832#fibo1ENTRY ~n := #in~n; 16845#L10 assume !(~n < 1); 16843#L12 assume !(1 == ~n); 16841#L15 call #t~ret7 := fibo2(~n - 1);< 16842#fibo2ENTRY ~n := #in~n; 16850#L20 assume !(~n < 1); 16848#L22 assume 1 == ~n;#res := 1; 16847#fibo2FINAL assume true; 16840#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16839#L20 assume !(~n < 1); 17489#L22 assume !(1 == ~n); 17419#L25 call #t~ret9 := fibo1(~n - 1);< 17420#fibo1ENTRY ~n := #in~n; 17484#L10 assume !(~n < 1); 17483#L12 assume 1 == ~n;#res := 1; 17481#fibo1FINAL assume true; 17418#fibo1EXIT >#46#return; 17384#L25-1 call #t~ret10 := fibo1(~n - 2);< 17385#fibo1ENTRY ~n := #in~n; 17395#L10 assume ~n < 1;#res := 0; 17394#fibo1FINAL assume true; 17383#fibo1EXIT >#48#return; 17373#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17372#fibo2FINAL assume true; 17370#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-28 08:44:17,088 INFO L793 eck$LassoCheckResult]: Loop: 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17216#L15 call #t~ret7 := fibo2(~n - 1);< 17217#fibo2ENTRY ~n := #in~n; 17328#L20 assume !(~n < 1); 17351#L22 assume 1 == ~n;#res := 1; 17223#fibo2FINAL assume true; 17215#fibo2EXIT >#50#return; 17210#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume 1 == ~n;#res := 1; 17204#fibo1FINAL assume true; 17151#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-28 08:44:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1399262747, now seen corresponding path program 1 times [2021-10-28 08:44:17,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:17,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860324320] [2021-10-28 08:44:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:17,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 08:44:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-28 08:44:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 08:44:17,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:17,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860324320] [2021-10-28 08:44:17,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860324320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:17,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322157846] [2021-10-28 08:44:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:17,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:17,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:17,304 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:17,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-28 08:44:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:17,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:44:17,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 08:44:18,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322157846] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:18,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:18,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-28 08:44:18,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489924888] [2021-10-28 08:44:18,084 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:18,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash -993859138, now seen corresponding path program 1 times [2021-10-28 08:44:18,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:18,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539111468] [2021-10-28 08:44:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:18,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:44:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 08:44:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:44:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 08:44:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-28 08:44:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:44:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 08:44:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-28 08:44:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 2 proven. 113 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-10-28 08:44:18,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:18,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539111468] [2021-10-28 08:44:18,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539111468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:18,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585517312] [2021-10-28 08:44:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:18,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:18,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:18,470 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:18,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-28 08:44:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:19,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:44:19,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 155 proven. 1 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2021-10-28 08:44:19,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585517312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:19,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:19,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-28 08:44:19,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292131530] [2021-10-28 08:44:19,569 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:44:19,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:19,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:44:19,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:44:19,571 INFO L87 Difference]: Start difference. First operand 2382 states and 3583 transitions. cyclomatic complexity: 1228 Second operand has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 11 states have internal predecessors, (50), 8 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-28 08:44:19,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:19,892 INFO L93 Difference]: Finished difference Result 2429 states and 3633 transitions. [2021-10-28 08:44:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 08:44:19,893 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2429 states and 3633 transitions. [2021-10-28 08:44:19,939 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-28 08:44:19,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2429 states to 2425 states and 3626 transitions. [2021-10-28 08:44:19,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 759 [2021-10-28 08:44:19,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 759 [2021-10-28 08:44:19,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2425 states and 3626 transitions. [2021-10-28 08:44:19,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:19,991 INFO L681 BuchiCegarLoop]: Abstraction has 2425 states and 3626 transitions. [2021-10-28 08:44:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states and 3626 transitions. [2021-10-28 08:44:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2404. [2021-10-28 08:44:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1527 states have (on average 1.197773411918795) internal successors, (1829), 1682 states have internal predecessors, (1829), 562 states have call successors, (600), 297 states have call predecessors, (600), 315 states have return successors, (1160), 424 states have call predecessors, (1160), 559 states have call successors, (1160) [2021-10-28 08:44:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3589 transitions. [2021-10-28 08:44:20,113 INFO L704 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-28 08:44:20,113 INFO L587 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-28 08:44:20,114 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 08:44:20,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2404 states and 3589 transitions. [2021-10-28 08:44:20,135 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-28 08:44:20,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:20,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:20,136 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:20,136 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:20,137 INFO L791 eck$LassoCheckResult]: Stem: 22581#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 22582#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 22627#L39 call main_#t~ret11 := fibo1(main_~x~0);< 22681#fibo1ENTRY ~n := #in~n; 22901#L10 assume !(~n < 1); 22894#L12 assume !(1 == ~n); 22707#L15 call #t~ret7 := fibo2(~n - 1);< 22714#fibo2ENTRY ~n := #in~n; 22773#L20 assume !(~n < 1); 22770#L22 assume !(1 == ~n); 22737#L25 call #t~ret9 := fibo1(~n - 1);< 22738#fibo1ENTRY ~n := #in~n; 22757#L10 assume !(~n < 1); 22755#L12 assume !(1 == ~n); 22735#L15 call #t~ret7 := fibo2(~n - 1);< 22750#fibo2ENTRY ~n := #in~n; 22741#L20 assume !(~n < 1); 22739#L22 assume !(1 == ~n); 22715#L25 call #t~ret9 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22732#L10 assume !(~n < 1); 22730#L12 assume !(1 == ~n); 22711#L15 call #t~ret7 := fibo2(~n - 1);< 22716#fibo2ENTRY ~n := #in~n; 22774#L20 assume !(~n < 1); 22771#L22 assume !(1 == ~n); 22726#L25 call #t~ret9 := fibo1(~n - 1);< 22769#fibo1ENTRY ~n := #in~n; 22797#L10 assume !(~n < 1); 22792#L12 assume 1 == ~n;#res := 1; 22793#fibo1FINAL assume true; 23632#fibo1EXIT >#46#return; 22807#L25-1 call #t~ret10 := fibo1(~n - 2);< 22810#fibo1ENTRY ~n := #in~n; 23251#L10 assume ~n < 1;#res := 0; 23250#fibo1FINAL assume true; 22806#fibo1EXIT >#48#return; 22804#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22802#fibo2FINAL assume true; 22758#fibo2EXIT >#50#return; 22702#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-28 08:44:20,137 INFO L793 eck$LassoCheckResult]: Loop: 22880#L25 call #t~ret9 := fibo1(~n - 1);< 22883#fibo1ENTRY ~n := #in~n; 22968#L10 assume !(~n < 1); 22967#L12 assume !(1 == ~n); 22891#L15 call #t~ret7 := fibo2(~n - 1);< 22893#fibo2ENTRY ~n := #in~n; 23516#L20 assume !(~n < 1); 23062#L22 assume !(1 == ~n); 23063#L25 call #t~ret9 := fibo1(~n - 1);< 23490#fibo1ENTRY ~n := #in~n; 23626#L10 assume !(~n < 1); 23619#L12 assume 1 == ~n;#res := 1; 23616#fibo1FINAL assume true; 23484#fibo1EXIT >#46#return; 22948#L25-1 call #t~ret10 := fibo1(~n - 2);< 22949#fibo1ENTRY ~n := #in~n; 23562#L10 assume ~n < 1;#res := 0; 23560#fibo1FINAL assume true; 23473#fibo1EXIT >#48#return; 22937#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22935#fibo2FINAL assume true; 22890#fibo2EXIT >#50#return; 22698#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-28 08:44:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -334000957, now seen corresponding path program 1 times [2021-10-28 08:44:20,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:20,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189649128] [2021-10-28 08:44:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:20,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 08:44:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:44:20,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:20,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189649128] [2021-10-28 08:44:20,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189649128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:20,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016928991] [2021-10-28 08:44:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:20,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:20,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:20,376 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:20,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-28 08:44:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:21,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 08:44:21,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:44:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016928991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:21,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:21,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 20 [2021-10-28 08:44:21,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299743333] [2021-10-28 08:44:21,164 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash 869465037, now seen corresponding path program 1 times [2021-10-28 08:44:21,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:21,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997141796] [2021-10-28 08:44:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:21,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:44:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:21,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 08:44:21,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:21,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997141796] [2021-10-28 08:44:21,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997141796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:21,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683972733] [2021-10-28 08:44:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:21,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:21,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:21,283 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:21,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-28 08:44:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:22,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:44:22,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 08:44:22,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683972733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:22,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:22,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-10-28 08:44:22,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596502544] [2021-10-28 08:44:22,222 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:44:22,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:44:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:44:22,223 INFO L87 Difference]: Start difference. First operand 2404 states and 3589 transitions. cyclomatic complexity: 1212 Second operand has 13 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 08:44:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:22,455 INFO L93 Difference]: Finished difference Result 1480 states and 1973 transitions. [2021-10-28 08:44:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:44:22,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1480 states and 1973 transitions. [2021-10-28 08:44:22,476 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-28 08:44:22,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1480 states to 1281 states and 1737 transitions. [2021-10-28 08:44:22,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 489 [2021-10-28 08:44:22,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 489 [2021-10-28 08:44:22,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1281 states and 1737 transitions. [2021-10-28 08:44:22,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:22,498 INFO L681 BuchiCegarLoop]: Abstraction has 1281 states and 1737 transitions. [2021-10-28 08:44:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states and 1737 transitions. [2021-10-28 08:44:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1039. [2021-10-28 08:44:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 678 states have (on average 1.1592920353982301) internal successors, (786), 733 states have internal predecessors, (786), 204 states have call successors, (213), 137 states have call predecessors, (213), 157 states have return successors, (369), 168 states have call predecessors, (369), 201 states have call successors, (369) [2021-10-28 08:44:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1368 transitions. [2021-10-28 08:44:22,550 INFO L704 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-28 08:44:22,550 INFO L587 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-28 08:44:22,551 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 08:44:22,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1039 states and 1368 transitions. [2021-10-28 08:44:22,560 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-28 08:44:22,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:22,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:22,562 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:22,562 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:22,562 INFO L791 eck$LassoCheckResult]: Stem: 26765#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 26766#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 26805#L39 call main_#t~ret11 := fibo1(main_~x~0);< 26847#fibo1ENTRY ~n := #in~n; 26884#L10 assume !(~n < 1); 26883#L12 assume !(1 == ~n); 26879#L15 call #t~ret7 := fibo2(~n - 1);< 26882#fibo2ENTRY ~n := #in~n; 26881#L20 assume !(~n < 1); 26880#L22 assume !(1 == ~n); 26875#L25 call #t~ret9 := fibo1(~n - 1);< 26878#fibo1ENTRY ~n := #in~n; 26877#L10 assume !(~n < 1); 26876#L12 assume !(1 == ~n); 26871#L15 call #t~ret7 := fibo2(~n - 1);< 26874#fibo2ENTRY ~n := #in~n; 26873#L20 assume !(~n < 1); 26872#L22 assume !(1 == ~n); 26868#L25 call #t~ret9 := fibo1(~n - 1);< 26870#fibo1ENTRY ~n := #in~n; 26869#L10 assume !(~n < 1); 26867#L12 assume !(1 == ~n); 26862#L15 call #t~ret7 := fibo2(~n - 1);< 26866#fibo2ENTRY ~n := #in~n; 26865#L20 assume !(~n < 1); 26864#L22 assume !(1 == ~n); 26859#L25 call #t~ret9 := fibo1(~n - 1);< 26858#fibo1ENTRY ~n := #in~n; 26861#L10 assume !(~n < 1); 26915#L12 assume !(1 == ~n); 26912#L15 call #t~ret7 := fibo2(~n - 1);< 26913#fibo2ENTRY ~n := #in~n; 26918#L20 assume !(~n < 1); 26917#L22 assume 1 == ~n;#res := 1; 26914#fibo2FINAL assume true; 26911#fibo2EXIT >#50#return; 26909#L15-1 call #t~ret8 := fibo2(~n - 2);< 26910#fibo2ENTRY ~n := #in~n; 26922#L20 assume ~n < 1;#res := 0; 26919#fibo2FINAL assume true; 26908#fibo2EXIT >#52#return; 26907#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 26906#fibo1FINAL assume true; 26905#fibo1EXIT >#46#return; 26899#L25-1 call #t~ret10 := fibo1(~n - 2);< 26903#fibo1ENTRY ~n := #in~n; 26902#L10 assume !(~n < 1); 26901#L12 assume !(1 == ~n); 26892#L15 call #t~ret7 := fibo2(~n - 1);< 26897#fibo2ENTRY ~n := #in~n; 26896#L20 assume !(~n < 1); 26891#L22 assume !(1 == ~n); 26894#L25 call #t~ret9 := fibo1(~n - 1);< 27236#fibo1ENTRY ~n := #in~n; 27261#L10 assume !(~n < 1); 27256#L12 assume !(1 == ~n); 27248#L15 call #t~ret7 := fibo2(~n - 1);< 27252#fibo2ENTRY [2021-10-28 08:44:22,562 INFO L793 eck$LassoCheckResult]: Loop: 27252#fibo2ENTRY ~n := #in~n; 27262#L20 assume !(~n < 1); 27258#L22 assume !(1 == ~n); 27254#L25 call #t~ret9 := fibo1(~n - 1);< 27265#fibo1ENTRY ~n := #in~n; 27263#L10 assume !(~n < 1); 27259#L12 assume !(1 == ~n); 27247#L15 call #t~ret7 := fibo2(~n - 1);< 27252#fibo2ENTRY [2021-10-28 08:44:22,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:22,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1022485656, now seen corresponding path program 2 times [2021-10-28 08:44:22,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:22,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100472737] [2021-10-28 08:44:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:22,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-10-28 08:44:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 08:44:22,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:22,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100472737] [2021-10-28 08:44:22,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100472737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:22,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427485436] [2021-10-28 08:44:22,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:44:22,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:22,766 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:22,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-28 08:44:23,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:44:23,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:44:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:44:23,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 08:44:23,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427485436] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:23,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:23,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-28 08:44:23,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127739184] [2021-10-28 08:44:23,687 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2021-10-28 08:44:23,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:23,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174256386] [2021-10-28 08:44:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:23,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:23,702 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:44:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:23,706 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:44:23,824 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:23,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:23,825 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:23,825 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:23,825 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:44:23,825 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:23,825 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:23,825 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:23,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-10-28 08:44:23,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:23,825 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:23,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:23,896 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:23,896 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:44:23,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:23,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:23,898 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:23,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:23,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:23,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 08:44:23,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:23,934 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:23,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-10-28 08:44:23,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:23,958 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:23,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 08:44:23,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:23,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:23,969 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:23,969 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:23,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-10-28 08:44:23,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:23,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:23,992 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:23,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 08:44:23,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:23,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:24,002 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:24,003 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:24,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-10-28 08:44:24,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,026 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 08:44:24,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:24,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:24,036 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:24,036 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:24,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,061 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 08:44:24,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:24,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:24,073 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:44:24,073 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:44:24,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,098 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-28 08:44:24,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:24,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:24,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,133 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-28 08:44:24,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:44:24,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:24,218 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:44:24,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,221 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:24,221 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:24,221 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:24,221 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:24,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:44:24,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:24,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:24,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-10-28 08:44:24,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:24,222 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:24,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:24,304 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:24,304 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:44:24,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,306 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-28 08:44:24,307 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,318 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:24,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,343 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-28 08:44:24,344 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,353 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,355 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:24,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2021-10-28 08:44:24,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,380 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-28 08:44:24,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:24,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2021-10-28 08:44:24,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,442 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,464 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-28 08:44:24,478 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:24,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,519 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,524 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-28 08:44:24,550 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:24,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,589 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,592 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 08:44:24,637 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:24,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,683 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-28 08:44:24,726 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:44:24,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-28 08:44:24,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,759 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-28 08:44:24,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:24,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:24,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:24,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:24,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:24,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:24,771 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:24,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:24,773 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:44:24,776 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 08:44:24,776 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:44:24,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:24,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:24,778 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:24,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-28 08:44:24,779 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:44:24,779 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:44:24,779 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:44:24,779 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-28 08:44:24,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:24,804 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:44:24,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:24,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 08:44:24,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:25,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:25,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:25,546 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 [2021-10-28 08:44:25,546 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:44:25,693 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-28 08:44:25,694 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 [2021-10-28 08:44:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:44:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-28 08:44:25,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-28 08:44:25,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:25,696 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:25,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 08:44:25,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:25,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:26,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:26,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:26,454 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 [2021-10-28 08:44:26,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:44:26,589 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-28 08:44:26,590 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 [2021-10-28 08:44:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:44:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-28 08:44:26,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-28 08:44:26,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:26,591 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:26,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 08:44:26,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:27,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:27,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:27,232 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 [2021-10-28 08:44:27,233 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:44:27,379 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1821 states and 2255 transitions. Complement of second has 25 states. [2021-10-28 08:44:27,379 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 [2021-10-28 08:44:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:44:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2021-10-28 08:44:27,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-28 08:44:27,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:27,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 65 letters. Loop has 8 letters. [2021-10-28 08:44:27,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:27,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 16 letters. [2021-10-28 08:44:27,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:27,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1821 states and 2255 transitions. [2021-10-28 08:44:27,404 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 133 [2021-10-28 08:44:27,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1821 states to 1322 states and 1717 transitions. [2021-10-28 08:44:27,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 438 [2021-10-28 08:44:27,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 456 [2021-10-28 08:44:27,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1322 states and 1717 transitions. [2021-10-28 08:44:27,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:27,425 INFO L681 BuchiCegarLoop]: Abstraction has 1322 states and 1717 transitions. [2021-10-28 08:44:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states and 1717 transitions. [2021-10-28 08:44:27,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1090. [2021-10-28 08:44:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 726 states have (on average 1.159779614325069) internal successors, (842), 774 states have internal predecessors, (842), 205 states have call successors, (214), 147 states have call predecessors, (214), 159 states have return successors, (361), 168 states have call predecessors, (361), 202 states have call successors, (361) [2021-10-28 08:44:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1417 transitions. [2021-10-28 08:44:27,465 INFO L704 BuchiCegarLoop]: Abstraction has 1090 states and 1417 transitions. [2021-10-28 08:44:27,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:27,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 08:44:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-28 08:44:27,466 INFO L87 Difference]: Start difference. First operand 1090 states and 1417 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 12 states have internal predecessors, (43), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:44:27,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:27,863 INFO L93 Difference]: Finished difference Result 552 states and 696 transitions. [2021-10-28 08:44:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 08:44:27,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 552 states and 696 transitions. [2021-10-28 08:44:27,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-28 08:44:27,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 552 states to 499 states and 627 transitions. [2021-10-28 08:44:27,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2021-10-28 08:44:27,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2021-10-28 08:44:27,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 499 states and 627 transitions. [2021-10-28 08:44:27,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:27,876 INFO L681 BuchiCegarLoop]: Abstraction has 499 states and 627 transitions. [2021-10-28 08:44:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states and 627 transitions. [2021-10-28 08:44:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 483. [2021-10-28 08:44:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 320 states have (on average 1.125) internal successors, (360), 337 states have internal predecessors, (360), 95 states have call successors, (97), 66 states have call predecessors, (97), 68 states have return successors, (149), 79 states have call predecessors, (149), 89 states have call successors, (149) [2021-10-28 08:44:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 606 transitions. [2021-10-28 08:44:27,892 INFO L704 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-28 08:44:27,892 INFO L587 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-28 08:44:27,892 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 08:44:27,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 483 states and 606 transitions. [2021-10-28 08:44:27,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-28 08:44:27,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:44:27,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:44:27,896 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] [2021-10-28 08:44:27,896 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:27,896 INFO L791 eck$LassoCheckResult]: Stem: 34377#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 34378#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 34413#L39 call main_#t~ret11 := fibo1(main_~x~0);< 34454#fibo1ENTRY ~n := #in~n; 34519#L10 assume !(~n < 1); 34517#L12 assume !(1 == ~n); 34514#L15 call #t~ret7 := fibo2(~n - 1);< 34515#fibo2ENTRY ~n := #in~n; 34537#L20 assume !(~n < 1); 34530#L22 assume !(1 == ~n); 34526#L25 call #t~ret9 := fibo1(~n - 1);< 34527#fibo1ENTRY ~n := #in~n; 34605#L10 assume !(~n < 1); 34604#L12 assume !(1 == ~n); 34595#L15 call #t~ret7 := fibo2(~n - 1);< 34603#fibo2ENTRY ~n := #in~n; 34653#L20 assume !(~n < 1); 34652#L22 assume !(1 == ~n); 34579#L25 call #t~ret9 := fibo1(~n - 1);< 34651#fibo1ENTRY ~n := #in~n; 34649#L10 assume !(~n < 1); 34647#L12 assume !(1 == ~n); 34596#L15 call #t~ret7 := fibo2(~n - 1);< 34638#fibo2ENTRY ~n := #in~n; 34648#L20 assume !(~n < 1); 34646#L22 assume !(1 == ~n); 34566#L25 call #t~ret9 := fibo1(~n - 1);< 34598#fibo1ENTRY ~n := #in~n; 34676#L10 assume !(~n < 1); 34675#L12 assume !(1 == ~n); 34673#L15 call #t~ret7 := fibo2(~n - 1);< 34674#fibo2ENTRY ~n := #in~n; 34680#L20 assume !(~n < 1); 34679#L22 assume 1 == ~n;#res := 1; 34678#fibo2FINAL assume true; 34672#fibo2EXIT >#50#return; 34669#L15-1 call #t~ret8 := fibo2(~n - 2);< 34670#fibo2ENTRY ~n := #in~n; 34774#L20 assume ~n < 1;#res := 0; 34771#fibo2FINAL assume true; 34668#fibo2EXIT >#52#return; 34666#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 34664#fibo1FINAL assume true; 34663#fibo1EXIT >#46#return; 34661#L25-1 call #t~ret10 := fibo1(~n - 2);< 34662#fibo1ENTRY ~n := #in~n; 34671#L10 assume !(~n < 1); 34667#L12 assume 1 == ~n;#res := 1; 34665#fibo1FINAL assume true; 34660#fibo1EXIT >#48#return; 34659#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 34656#fibo2FINAL assume true; 34633#fibo2EXIT >#50#return; 34507#L15-1 call #t~ret8 := fibo2(~n - 2);< 34419#fibo2ENTRY ~n := #in~n; 34577#L20 assume !(~n < 1); 34576#L22 assume !(1 == ~n); 34417#L25 call #t~ret9 := fibo1(~n - 1);< 34505#fibo1ENTRY ~n := #in~n; 34475#L10 assume !(~n < 1); 34476#L12 assume !(1 == ~n); 34504#L15 call #t~ret7 := fibo2(~n - 1);< 34592#fibo2ENTRY ~n := #in~n; 34620#L20 assume !(~n < 1); 34834#L22 assume !(1 == ~n); 34730#L25 call #t~ret9 := fibo1(~n - 1);< 34734#fibo1ENTRY ~n := #in~n; 34822#L10 assume !(~n < 1); 34821#L12 assume !(1 == ~n); 34393#L15 [2021-10-28 08:44:27,897 INFO L793 eck$LassoCheckResult]: Loop: 34393#L15 call #t~ret7 := fibo2(~n - 1);< 34819#fibo2ENTRY ~n := #in~n; 34820#L20 assume !(~n < 1); 34824#L22 assume !(1 == ~n); 34732#L25 call #t~ret9 := fibo1(~n - 1);< 34734#fibo1ENTRY ~n := #in~n; 34822#L10 assume !(~n < 1); 34821#L12 assume !(1 == ~n); 34393#L15 [2021-10-28 08:44:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2021-10-28 08:44:27,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:27,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208053040] [2021-10-28 08:44:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:27,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:28,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 08:44:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:44:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:28,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:44:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:44:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 08:44:28,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:28,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208053040] [2021-10-28 08:44:28,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208053040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:28,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032017569] [2021-10-28 08:44:28,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:44:28,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:28,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:28,128 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-28 08:44:28,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:44:28,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:44:28,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:44:28,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 08:44:29,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032017569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:29,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:44:29,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-28 08:44:29,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106688345] [2021-10-28 08:44:29,006 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:44:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2021-10-28 08:44:29,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:29,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89305457] [2021-10-28 08:44:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:29,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:29,016 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:44:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:29,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:44:29,139 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:29,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:29,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:29,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:29,139 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:44:29,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:29,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:29,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:29,140 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration11_Loop [2021-10-28 08:44:29,140 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:29,140 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:29,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:29,208 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:29,209 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:44:29,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:29,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:29,212 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:29,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-28 08:44:29,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:44:29,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:29,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:29,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:29,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:29,256 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:29,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-28 08:44:29,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:44:29,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:44:31,570 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:44:31,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:31,573 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:44:31,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:44:31,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:44:31,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:44:31,574 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:44:31,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:31,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:44:31,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:44:31,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration11_Loop [2021-10-28 08:44:31,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:44:31,574 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:44:31,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:44:31,706 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:44:31,706 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:44:31,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:31,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:31,707 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:31,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-28 08:44:31,709 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:44:31,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:44:31,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:44:31,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:44:31,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:44:31,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:44:31,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:44:31,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:44:31,721 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:44:31,724 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 08:44:31,725 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:44:31,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:44:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:31,726 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:31,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-28 08:44:31,728 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:44:31,728 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:44:31,728 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:44:31,728 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 08:44:31,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2021-10-28 08:44:31,754 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:44:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:31,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 08:44:31,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:32,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:32,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:32,722 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 [2021-10-28 08:44:32,722 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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) [2021-10-28 08:44:32,834 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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 524 states and 649 transitions. Complement of second has 19 states. [2021-10-28 08:44:32,835 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 [2021-10-28 08:44:32,836 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) [2021-10-28 08:44:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2021-10-28 08:44:32,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 22 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-28 08:44:32,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:32,837 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:32,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 08:44:32,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2021-10-28 08:44:32,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:33,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:33,774 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 [2021-10-28 08:44:33,774 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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) [2021-10-28 08:44:33,953 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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 530 states and 655 transitions. Complement of second has 27 states. [2021-10-28 08:44:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 08:44:33,954 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) [2021-10-28 08:44:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 25 transitions. [2021-10-28 08:44:33,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 25 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-28 08:44:33,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:33,956 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:44:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:34,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 08:44:34,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:34,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:44:34,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:34,859 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 [2021-10-28 08:44:34,859 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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) [2021-10-28 08:44:35,017 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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 825 states and 995 transitions. Complement of second has 33 states. [2021-10-28 08:44:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 08:44:35,018 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) [2021-10-28 08:44:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-28 08:44:35,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-28 08:44:35,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:35,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2021-10-28 08:44:35,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:35,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2021-10-28 08:44:35,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:44:35,021 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 825 states and 995 transitions. [2021-10-28 08:44:35,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-28 08:44:35,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 825 states to 579 states and 719 transitions. [2021-10-28 08:44:35,037 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 270 [2021-10-28 08:44:35,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 314 [2021-10-28 08:44:35,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 579 states and 719 transitions. [2021-10-28 08:44:35,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:44:35,038 INFO L681 BuchiCegarLoop]: Abstraction has 579 states and 719 transitions. [2021-10-28 08:44:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states and 719 transitions. [2021-10-28 08:44:35,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 529. [2021-10-28 08:44:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 354 states have (on average 1.1101694915254237) internal successors, (393), 370 states have internal predecessors, (393), 102 states have call successors, (109), 77 states have call predecessors, (109), 73 states have return successors, (154), 81 states have call predecessors, (154), 96 states have call successors, (154) [2021-10-28 08:44:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 656 transitions. [2021-10-28 08:44:35,059 INFO L704 BuchiCegarLoop]: Abstraction has 529 states and 656 transitions. [2021-10-28 08:44:35,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 08:44:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-28 08:44:35,060 INFO L87 Difference]: Start difference. First operand 529 states and 656 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) [2021-10-28 08:44:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:35,488 INFO L93 Difference]: Finished difference Result 521 states and 613 transitions. [2021-10-28 08:44:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 08:44:35,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 521 states and 613 transitions. [2021-10-28 08:44:35,494 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:44:35,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 521 states to 0 states and 0 transitions. [2021-10-28 08:44:35,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 08:44:35,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 08:44:35,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 08:44:35,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:44:35,494 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:44:35,495 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:44:35,495 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:44:35,495 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 08:44:35,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:44:35,495 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:44:35,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 08:44:35,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:44:35 BoogieIcfgContainer [2021-10-28 08:44:35,503 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:44:35,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:44:35,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:44:35,504 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:44:35,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:53" (3/4) ... [2021-10-28 08:44:35,508 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:44:35,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:44:35,510 INFO L168 Benchmark]: Toolchain (without parser) took 42995.97 ms. Allocated memory was 104.9 MB in the beginning and 358.6 MB in the end (delta: 253.8 MB). Free memory was 66.3 MB in the beginning and 118.9 MB in the end (delta: -52.6 MB). Peak memory consumption was 202.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:35,511 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 83.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:44:35,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.96 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 56.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:35,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 104.9 MB. Free memory was 56.6 MB in the beginning and 55.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:35,512 INFO L168 Benchmark]: Boogie Preprocessor took 45.26 ms. Allocated memory is still 104.9 MB. Free memory was 55.3 MB in the beginning and 54.3 MB in the end (delta: 968.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:35,513 INFO L168 Benchmark]: RCFGBuilder took 319.22 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 54.3 MB in the beginning and 113.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:35,513 INFO L168 Benchmark]: BuchiAutomizer took 42380.22 ms. Allocated memory was 140.5 MB in the beginning and 358.6 MB in the end (delta: 218.1 MB). Free memory was 113.3 MB in the beginning and 118.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 215.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:35,514 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 358.6 MB. Free memory is still 118.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:44:35,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 83.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 204.96 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 56.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 104.9 MB. Free memory was 56.6 MB in the beginning and 55.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.26 ms. Allocated memory is still 104.9 MB. Free memory was 55.3 MB in the beginning and 54.3 MB in the end (delta: 968.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 319.22 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 54.3 MB in the beginning and 113.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 42380.22 ms. Allocated memory was 140.5 MB in the beginning and 358.6 MB in the end (delta: 218.1 MB). Free memory was 113.3 MB in the beginning and 118.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 215.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.11 ms. Allocated memory is still 358.6 MB. Free memory is still 118.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (10 trivial, 2 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 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. 10 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 42.3s and 12 iterations. TraceHistogramMax:18. Analysis of lassos took 22.7s. Construction of modules took 3.1s. Büchi inclusion checks took 14.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 15. Automata minimization 0.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 1197 StatesRemovedByMinimization, 15 NontrivialMinimizations. Non-live state removal took 0.5s Buchi closure took 0.0s. Biggest automaton had 2404 states and ocurred in iteration 8. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 531 SDtfs, 1215 SDslu, 1801 SDs, 0 SdLazy, 4129 SolverSat, 718 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI5 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf92 lsp93 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf93 smp80 dnf100 smp100 tf110 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 08:44:35,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:35,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-28 08:44:35,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:36,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-28 08:44:36,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-28 08:44:36,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-28 08:44:36,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-28 08:44:36,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-28 08:44:37,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-28 08:44:37,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-28 08:44:37,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:37,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-28 08:44:37,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 08:44:38,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e1fd31-e1ee-4ef9-a22c-6a686edd39e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...