./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:55:38,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:55:38,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:55:38,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:55:38,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:55:38,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:55:38,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:55:38,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:55:38,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:55:38,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:55:38,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:55:38,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:55:38,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:55:38,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:55:38,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:55:38,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:55:38,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:55:38,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:55:38,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:55:38,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:55:38,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:55:38,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:55:38,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:55:38,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:55:38,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:55:38,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:55:38,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:55:38,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:55:38,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:55:38,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:55:38,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:55:38,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:55:38,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:55:38,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:55:38,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:55:38,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:55:38,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:55:38,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:55:38,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:55:38,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:55:38,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:55:38,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:55:38,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:55:38,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:55:38,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:55:38,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:55:38,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:55:38,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:55:38,891 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:55:38,892 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:55:38,892 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:55:38,892 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:55:38,893 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:55:38,893 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:55:38,893 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:55:38,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:55:38,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:55:38,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:55:38,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:55:38,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:55:38,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:55:38,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:55:38,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:55:38,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:55:38,896 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:55:38,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:55:38,896 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:55:38,896 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:55:38,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:55:38,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:55:38,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:55:38,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:55:38,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:55:38,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:55:38,901 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:55:38,901 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_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2021-10-28 23:55:39,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:55:39,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:55:39,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:55:39,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:55:39,203 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:55:39,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-10-28 23:55:39,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/data/1cd7a2adf/03060f0c27f64673b5a7b97fd1b54c22/FLAG1d2b5973a [2021-10-28 23:55:39,727 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:55:39,728 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-10-28 23:55:39,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/data/1cd7a2adf/03060f0c27f64673b5a7b97fd1b54c22/FLAG1d2b5973a [2021-10-28 23:55:40,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/data/1cd7a2adf/03060f0c27f64673b5a7b97fd1b54c22 [2021-10-28 23:55:40,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:55:40,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:55:40,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:40,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:55:40,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:55:40,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165e0f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40, skipping insertion in model container [2021-10-28 23:55:40,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:55:40,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:55:40,342 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_a0880ead-100f-4a07-b44c-0d346874bc7d/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2021-10-28 23:55:40,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:40,359 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:55:40,378 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_a0880ead-100f-4a07-b44c-0d346874bc7d/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2021-10-28 23:55:40,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:40,396 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:55:40,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40 WrapperNode [2021-10-28 23:55:40,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:40,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:40,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:55:40,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:55:40,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:40,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:55:40,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:55:40,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:55:40,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:55:40,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:55:40,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:55:40,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:55:40,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (1/1) ... [2021-10-28 23:55:40,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:40,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:40,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:40,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:55:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:55:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-28 23:55:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-28 23:55:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:55:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-28 23:55:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-28 23:55:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:55:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:55:40,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:55:40,799 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:55:40,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:40 BoogieIcfgContainer [2021-10-28 23:55:40,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:55:40,802 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:55:40,802 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:55:40,805 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:55:40,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:40,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:55:40" (1/3) ... [2021-10-28 23:55:40,807 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d2f8622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:55:40, skipping insertion in model container [2021-10-28 23:55:40,808 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:40,808 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:40" (2/3) ... [2021-10-28 23:55:40,808 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d2f8622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:55:40, skipping insertion in model container [2021-10-28 23:55:40,808 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:40,809 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:40" (3/3) ... [2021-10-28 23:55:40,810 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2021-10-28 23:55:40,852 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:55:40,852 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:55:40,852 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:55:40,852 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:55:40,852 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:55:40,853 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:55:40,853 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:55:40,853 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:55:40,868 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 23:55:40,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:55:40,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:40,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:40,897 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:55:40,897 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:40,897 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:55:40,898 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 23:55:40,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:55:40,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:40,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:40,904 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:55:40,904 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:40,926 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 := 5; 15#L39true call main_#t~ret11 := fibo1(main_~x~0);< 5#fibo1ENTRYtrue [2021-10-28 23:55:40,927 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 23:55:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-10-28 23:55:40,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:40,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097937874] [2021-10-28 23:55:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:40,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:41,075 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:41,118 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:41,121 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-10-28 23:55:41,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:41,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956675877] [2021-10-28 23:55:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:41,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:41,129 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:41,137 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-10-28 23:55:41,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:41,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114919753] [2021-10-28 23:55:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:41,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:41,158 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:41,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:41,444 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:41,445 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:41,445 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:41,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:41,445 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:55:41,446 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,446 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:41,446 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:41,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-10-28 23:55:41,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:41,447 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:41,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:41,468 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 23:55:41,471 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 23:55:41,473 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 23:55:41,476 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 23:55:41,479 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 23:55:41,482 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 23:55:41,485 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 23:55:41,489 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 23:55:41,502 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 23:55:41,608 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:41,610 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:55:41,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:41,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:41,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:55:41,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:41,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:41,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:41,664 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 23:55:41,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:41,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:41,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:41,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:41,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:41,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:55:41,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:41,729 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 23:55:41,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:41,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:41,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:41,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:55:41,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:41,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:41,808 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:41,809 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 23:55:41,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:41,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:41,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:41,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:41,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:41,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:55:41,877 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:41,877 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 23:55:41,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:41,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:41,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:41,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:55:41,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:41,906 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:41,920 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:41,921 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 23:55:41,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:41,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:41,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:41,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:41,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:41,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:55:41,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:41,961 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 23:55:41,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:41,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:41,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:41,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:41,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:55:41,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:41,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:41,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:41,995 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 23:55:42,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:55:42,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:42,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:42,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:42,056 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 23:55:42,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 23:55:42,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,077 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:55:42,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:42,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:42,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,108 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:55:42,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:55:42,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:42,176 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:55:42,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,179 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:42,179 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:42,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:42,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:42,179 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:55:42,179 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,179 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:42,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:42,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-10-28 23:55:42,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:42,180 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:42,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:42,210 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 23:55:42,213 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 23:55:42,216 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 23:55:42,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:42,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:42,223 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 23:55:42,228 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 23:55:42,230 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 23:55:42,245 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 23:55:42,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:42,305 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:55:42,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,307 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,320 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 23:55:42,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,333 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:55:42,345 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,394 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 23:55:42,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:55:42,432 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,495 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,501 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 23:55:42,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,510 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:55:42,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,518 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,544 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 23:55:42,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:55:42,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,569 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,593 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:55:42,599 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 23:55:42,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,608 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,628 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:55:42,631 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 23:55:42,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,640 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,641 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,642 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,665 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:55:42,670 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 23:55:42,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,678 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,694 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,713 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:55:42,715 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 23:55:42,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,723 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,724 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,724 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,735 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:42,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-10-28 23:55:42,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,759 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,764 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 23:55:42,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:42,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:42,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:42,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:42,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:42,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:42,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:42,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:55:42,779 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:55:42,800 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:55:42,800 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:55:42,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:42,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:42,803 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:42,812 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:55:42,812 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:55:42,812 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:55:42,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:55:42,813 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-10-28 23:55:42,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:42,834 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:55:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:42,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:55:42,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:42,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:55:42,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:43,124 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 23:55:43,139 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 23:55:43,142 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 23:55:43,360 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 23:55:43,360 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 23:55:43,362 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 23:55:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-10-28 23:55:43,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-28 23:55:43,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:43,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-28 23:55:43,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:43,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-10-28 23:55:43,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:43,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-10-28 23:55:43,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:55:43,403 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-10-28 23:55:43,404 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 23:55:43,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-28 23:55:43,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-10-28 23:55:43,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:43,408 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-10-28 23:55:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-10-28 23:55:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 23:55:43,444 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 23:55:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-10-28 23:55:43,447 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 23:55:43,447 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 23:55:43,447 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:55:43,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-10-28 23:55:43,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:55:43,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:43,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:43,454 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:43,454 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:43,455 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 := 5; 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 23:55:43,455 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 23:55:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-10-28 23:55:43,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:43,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580613961] [2021-10-28 23:55:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:43,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 23:55:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,597 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 23:55:43,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:43,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580613961] [2021-10-28 23:55:43,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580613961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:43,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:43,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:55:43,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145516648] [2021-10-28 23:55:43,603 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:55:43,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-10-28 23:55:43,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:43,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528629881] [2021-10-28 23:55:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:43,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,673 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 23:55:43,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:43,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528629881] [2021-10-28 23:55:43,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528629881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:43,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:43,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:55:43,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739931807] [2021-10-28 23:55:43,675 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:55:43,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:55:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:55:43,679 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 23:55:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:43,744 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-28 23:55:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:55:43,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-10-28 23:55:43,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:55:43,755 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-10-28 23:55:43,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-10-28 23:55:43,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-28 23:55:43,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-10-28 23:55:43,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:43,758 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-10-28 23:55:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-10-28 23:55:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-28 23:55:43,771 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 23:55:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-10-28 23:55:43,773 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 23:55:43,774 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 23:55:43,774 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:55:43,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-10-28 23:55:43,775 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:55:43,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:43,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:43,776 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:43,776 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:43,777 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 := 5; 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 23:55:43,777 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 23:55:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-10-28 23:55:43,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:43,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167093692] [2021-10-28 23:55:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:43,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 23:55:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,899 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 23:55:43,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:43,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167093692] [2021-10-28 23:55:43,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167093692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:43,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876979732] [2021-10-28 23:55:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:43,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:43,901 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:43,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:55:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:55:43,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:44,053 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 23:55:44,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876979732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:44,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:44,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 23:55:44,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534075468] [2021-10-28 23:55:44,054 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:55:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-10-28 23:55:44,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:44,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643780824] [2021-10-28 23:55:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:44,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,073 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:44,303 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:44,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:44,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:44,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:44,304 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:55:44,304 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:44,304 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:44,304 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:44,304 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-10-28 23:55:44,304 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:44,305 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:44,306 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 23:55:44,308 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 23:55:44,311 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 23:55:44,313 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 23:55:44,315 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 23:55:44,323 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 23:55:44,325 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 23:55:44,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:44,329 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 23:55:44,383 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:44,384 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:55:44,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:44,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:44,421 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:44,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:44,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:44,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:55:44,451 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:44,451 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 23:55:44,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:44,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:44,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:44,474 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:44,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:55:44,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:44,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:44,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:44,484 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 23:55:44,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-28 23:55:44,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:44,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:44,504 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:44,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:55:44,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:44,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:44,514 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:44,514 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 23:55:44,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:44,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:44,537 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:44,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:55:44,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:44,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:44,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:44,548 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 23:55:44,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 23:55:44,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:44,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:44,567 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:44,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:44,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:44,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:55:44,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:44,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 23:55:44,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:44,666 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:44,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:55:44,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:55:44,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:45,815 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:55:45,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:45,819 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:45,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:45,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:45,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:45,819 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:55:45,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:45,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:45,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:45,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-10-28 23:55:45,820 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:45,820 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:45,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:45,833 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 23:55:45,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:45,836 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 23:55:45,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:45,846 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 23:55:45,848 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 23:55:45,850 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 23:55:45,852 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 23:55:45,905 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:45,905 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:55:45,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:45,907 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:45,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:55:45,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:45,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:45,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:45,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:45,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:45,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:45,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:45,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:55:45,940 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:45,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:45,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:45,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:45,977 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:45,979 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 23:55:45,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:45,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:45,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:45,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:45,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:45,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:45,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:45,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:55:46,004 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:46,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:46,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:46,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:46,037 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:46,039 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 23:55:46,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:46,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:46,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:46,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:46,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:46,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:46,049 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:46,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:55:46,072 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:46,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:46,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:46,108 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:46,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:55:46,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:46,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:46,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:46,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:46,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:46,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:46,124 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:55:46,140 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:55:46,143 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:55:46,143 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:55:46,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:46,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:46,145 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:46,149 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:55:46,149 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:55:46,149 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:55:46,149 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-10-28 23:55:46,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:55:46,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-28 23:55:46,179 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:55:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:46,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:55:46,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:46,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:55:46,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:46,571 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 23:55:46,573 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 23:55:46,573 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 23:55:46,980 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 23:55:46,982 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 23:55:46,983 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 23:55:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-10-28 23:55:46,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-10-28 23:55:46,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:46,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-10-28 23:55:46,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:46,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-10-28 23:55:46,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:46,986 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-10-28 23:55:46,992 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 23:55:46,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-10-28 23:55:46,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-10-28 23:55:46,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-10-28 23:55:46,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-10-28 23:55:47,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:47,000 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-10-28 23:55:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-10-28 23:55:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-10-28 23:55:47,014 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 23:55:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-10-28 23:55:47,016 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-10-28 23:55:47,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:55:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:55:47,017 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 23:55:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:47,165 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2021-10-28 23:55:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:55:47,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2021-10-28 23:55:47,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 23:55:47,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2021-10-28 23:55:47,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-28 23:55:47,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-28 23:55:47,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2021-10-28 23:55:47,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:47,178 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2021-10-28 23:55:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2021-10-28 23:55:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-28 23:55:47,191 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 23:55:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2021-10-28 23:55:47,193 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 23:55:47,193 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 23:55:47,193 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:55:47,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2021-10-28 23:55:47,196 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 23:55:47,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:47,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:47,201 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 23:55:47,201 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 23:55:47,201 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 := 5; 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 23:55:47,202 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 23:55:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-10-28 23:55:47,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:47,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633224790] [2021-10-28 23:55:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:47,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 23:55:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 23:55:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-28 23:55:47,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:47,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633224790] [2021-10-28 23:55:47,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633224790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:47,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357075025] [2021-10-28 23:55:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:47,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:47,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:47,486 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:47,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 23:55:47,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:55:47,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-10-28 23:55:47,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357075025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:47,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:47,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 21 [2021-10-28 23:55:47,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908056504] [2021-10-28 23:55:47,901 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:55:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-10-28 23:55:47,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:47,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048709699] [2021-10-28 23:55:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:47,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 23:55:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:47,981 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 23:55:47,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:47,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048709699] [2021-10-28 23:55:47,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048709699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:47,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995518390] [2021-10-28 23:55:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:47,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:47,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:47,984 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:48,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 23:55:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:55:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:48,267 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 23:55:48,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995518390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:48,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:48,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-10-28 23:55:48,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66977660] [2021-10-28 23:55:48,269 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:55:48,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:48,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:55:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:55:48,270 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 23:55:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:48,480 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2021-10-28 23:55:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:55:48,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2021-10-28 23:55:48,492 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 23:55:48,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2021-10-28 23:55:48,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-28 23:55:48,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-28 23:55:48,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2021-10-28 23:55:48,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:48,499 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-10-28 23:55:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2021-10-28 23:55:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2021-10-28 23:55:48,514 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 23:55:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-10-28 23:55:48,517 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 23:55:48,517 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 23:55:48,517 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:55:48,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2021-10-28 23:55:48,519 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 23:55:48,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:48,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:48,522 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 23:55:48,522 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 23:55:48,522 INFO L791 eck$LassoCheckResult]: Stem: 2267#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2268#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2301#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2335#fibo1ENTRY ~n := #in~n; 2323#L10 assume !(~n < 1); 2316#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2326#fibo2ENTRY ~n := #in~n; 2411#L20 assume !(~n < 1); 2410#L22 assume !(1 == ~n); 2310#L25 call #t~ret9 := fibo1(~n - 1);< 2349#fibo1ENTRY ~n := #in~n; 2347#L10 assume !(~n < 1); 2346#L12 assume !(1 == ~n); 2288#L15 call #t~ret7 := fibo2(~n - 1);< 2340#fibo2ENTRY ~n := #in~n; 2369#L20 assume !(~n < 1); 2367#L22 assume !(1 == ~n); 2278#L25 call #t~ret9 := fibo1(~n - 1);< 2349#fibo1ENTRY ~n := #in~n; 2350#L10 assume !(~n < 1); 2378#L12 assume 1 == ~n;#res := 1; 2379#fibo1FINAL assume true; 2441#fibo1EXIT >#46#return; 2287#L25-1 call #t~ret10 := fibo1(~n - 2);< 2289#fibo1ENTRY ~n := #in~n; 2321#L10 assume ~n < 1;#res := 0; 2322#fibo1FINAL assume true; 2450#fibo1EXIT >#48#return; 2293#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2417#fibo2FINAL assume true; 2386#fibo2EXIT >#50#return; 2387#L15-1 [2021-10-28 23:55:48,522 INFO L793 eck$LassoCheckResult]: Loop: 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume !(1 == ~n); 2393#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume !(1 == ~n); 2393#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume 1 == ~n;#res := 1; 2415#fibo2FINAL assume true; 2395#fibo2EXIT >#50#return; 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume ~n < 1;#res := 0; 2412#fibo2FINAL assume true; 2409#fibo2EXIT >#52#return; 2388#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2408#fibo1FINAL assume true; 2400#fibo1EXIT >#46#return; 2391#L25-1 call #t~ret10 := fibo1(~n - 2);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume 1 == ~n;#res := 1; 2415#fibo2FINAL assume true; 2395#fibo2EXIT >#50#return; 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume ~n < 1;#res := 0; 2412#fibo2FINAL assume true; 2409#fibo2EXIT >#52#return; 2388#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2408#fibo1FINAL assume true; 2400#fibo1EXIT >#48#return; 2397#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2394#fibo2FINAL assume true; 2389#fibo2EXIT >#50#return; 2387#L15-1 [2021-10-28 23:55:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:48,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-10-28 23:55:48,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:48,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690947223] [2021-10-28 23:55:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:48,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:48,534 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:48,551 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-10-28 23:55:48,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:48,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950671542] [2021-10-28 23:55:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:48,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 23:55:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,710 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 23:55:48,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:48,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950671542] [2021-10-28 23:55:48,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950671542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:48,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601916392] [2021-10-28 23:55:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:48,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:48,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:48,721 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:48,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 23:55:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:48,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:55:48,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:49,054 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 23:55:49,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601916392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:49,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:49,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-28 23:55:49,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533414388] [2021-10-28 23:55:49,056 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:55:49,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:55:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:55:49,057 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 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (11), 6 states have call predecessors, (11), 9 states have call successors, (11) [2021-10-28 23:55:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:49,365 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2021-10-28 23:55:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:55:49,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 154 transitions. [2021-10-28 23:55:49,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:55:49,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 101 states and 126 transitions. [2021-10-28 23:55:49,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2021-10-28 23:55:49,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2021-10-28 23:55:49,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 126 transitions. [2021-10-28 23:55:49,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:49,372 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 126 transitions. [2021-10-28 23:55:49,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 126 transitions. [2021-10-28 23:55:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2021-10-28 23:55:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.125) internal successors, (72), 66 states have internal predecessors, (72), 18 states have call successors, (18), 14 states have call predecessors, (18), 16 states have return successors, (32), 17 states have call predecessors, (32), 16 states have call successors, (32) [2021-10-28 23:55:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 122 transitions. [2021-10-28 23:55:49,379 INFO L704 BuchiCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-10-28 23:55:49,379 INFO L587 BuchiCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-10-28 23:55:49,379 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:55:49,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 122 transitions. [2021-10-28 23:55:49,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:55:49,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:49,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:49,386 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 23:55:49,386 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 23:55:49,387 INFO L791 eck$LassoCheckResult]: Stem: 2856#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); 2857#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2880#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2906#fibo1ENTRY ~n := #in~n; 2891#L10 assume !(~n < 1); 2888#L12 assume !(1 == ~n); 2862#L15 call #t~ret7 := fibo2(~n - 1);< 2895#fibo2ENTRY ~n := #in~n; 2935#L20 assume !(~n < 1); 2861#L22 assume !(1 == ~n); 2863#L25 call #t~ret9 := fibo1(~n - 1);< 2877#fibo1ENTRY ~n := #in~n; 2878#L10 assume !(~n < 1); 2929#L12 assume !(1 == ~n); 2900#L15 call #t~ret7 := fibo2(~n - 1);< 2903#fibo2ENTRY ~n := #in~n; 2899#L20 assume !(~n < 1); 2901#L22 assume !(1 == ~n); 2874#L25 call #t~ret9 := fibo1(~n - 1);< 2877#fibo1ENTRY ~n := #in~n; 2879#L10 assume !(~n < 1); 2911#L12 assume 1 == ~n;#res := 1; 2912#fibo1FINAL assume true; 2873#fibo1EXIT >#46#return; 2865#L25-1 call #t~ret10 := fibo1(~n - 2);< 2945#fibo1ENTRY ~n := #in~n; 2890#L10 assume ~n < 1;#res := 0; 2864#fibo1FINAL assume true; 2867#fibo1EXIT >#48#return; 2930#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2927#fibo2FINAL assume true; 2925#fibo2EXIT >#50#return; 2871#L15-1 [2021-10-28 23:55:49,387 INFO L793 eck$LassoCheckResult]: Loop: 2871#L15-1 call #t~ret8 := fibo2(~n - 2);< 2883#fibo2ENTRY ~n := #in~n; 2942#L20 assume !(~n < 1); 2907#L22 assume !(1 == ~n); 2884#L25 call #t~ret9 := fibo1(~n - 1);< 2885#fibo1ENTRY ~n := #in~n; 2916#L10 assume !(~n < 1); 2914#L12 assume !(1 == ~n); 2870#L15 call #t~ret7 := fibo2(~n - 1);< 2894#fibo2ENTRY ~n := #in~n; 2902#L20 assume !(~n < 1); 2907#L22 assume !(1 == ~n); 2884#L25 call #t~ret9 := fibo1(~n - 1);< 2885#fibo1ENTRY ~n := #in~n; 2916#L10 assume !(~n < 1); 2914#L12 assume 1 == ~n;#res := 1; 2915#fibo1FINAL assume true; 2943#fibo1EXIT >#46#return; 2868#L25-1 call #t~ret10 := fibo1(~n - 2);< 2872#fibo1ENTRY ~n := #in~n; 2946#L10 assume ~n < 1;#res := 0; 2917#fibo1FINAL assume true; 2932#fibo1EXIT >#48#return; 2934#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2936#fibo2FINAL assume true; 2924#fibo2EXIT >#50#return; 2871#L15-1 [2021-10-28 23:55:49,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:49,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2021-10-28 23:55:49,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:49,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033453328] [2021-10-28 23:55:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:49,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:49,399 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:49,412 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2021-10-28 23:55:49,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:49,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139750461] [2021-10-28 23:55:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:49,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:49,419 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:49,425 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2021-10-28 23:55:49,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:49,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526847957] [2021-10-28 23:55:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:49,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 23:55:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-10-28 23:55:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-28 23:55:49,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:49,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526847957] [2021-10-28 23:55:49,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526847957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:49,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356460805] [2021-10-28 23:55:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:49,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:49,572 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:49,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 23:55:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:55:49,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 23:55:49,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356460805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:49,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:49,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2021-10-28 23:55:49,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197907291] [2021-10-28 23:55:50,183 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:50,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:50,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:50,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:50,183 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:55:50,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:50,183 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:50,183 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:50,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-10-28 23:55:50,184 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:50,184 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:50,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:50,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:50,189 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 23:55:50,191 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 23:55:50,193 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 23:55:50,199 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 23:55:50,201 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 23:55:50,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:50,204 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 23:55:50,251 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:50,251 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:55:50,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:50,253 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:50,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 23:55:50,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:50,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:50,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:50,268 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 23:55:50,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:50,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:50,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:50,291 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:50,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 23:55:50,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:50,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:50,300 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:50,301 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=1} Honda state: {fibo1_#t~ret7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:55:50,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:50,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:50,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:50,323 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:50,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 23:55:50,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:50,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:50,333 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:50,333 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 23:55:50,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:50,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:50,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:50,356 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:50,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:50,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:50,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 23:55:50,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:50,366 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 23:55:50,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:50,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:50,388 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:50,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:50,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:50,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 23:55:50,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:50,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:50,428 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:50,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 23:55:50,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:55:50,464 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:51,783 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:55:51,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:51,787 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:51,787 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:51,787 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:51,787 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:51,787 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:55:51,787 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:51,788 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:51,788 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:51,788 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-10-28 23:55:51,788 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:51,788 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:51,789 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 23:55:51,791 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 23:55:51,793 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 23:55:51,795 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 23:55:51,796 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 23:55:51,802 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 23:55:51,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:51,814 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 23:55:51,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:51,858 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:51,859 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:55:51,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:51,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:51,860 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:51,868 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 23:55:51,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:51,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:51,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:51,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:51,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:51,878 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:51,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:51,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 23:55:51,896 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:51,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-28 23:55:51,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:51,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:51,925 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:51,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 23:55:51,926 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 23:55:51,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:51,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:51,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:51,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:51,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:51,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:51,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:51,948 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:51,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:51,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:51,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:51,975 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:51,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 23:55:51,976 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 23:55:51,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:51,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:51,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:51,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:51,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:51,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:51,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:51,985 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:52,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-10-28 23:55:52,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:52,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:52,005 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:52,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 23:55:52,007 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 23:55:52,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:52,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:52,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:52,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:52,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:52,015 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:52,015 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:52,025 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:52,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 23:55:52,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:52,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:52,059 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 23:55:52,072 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 23:55:52,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:52,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:52,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:52,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:52,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:52,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:52,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:52,082 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:55:52,084 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:55:52,085 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:55:52,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:52,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:52,086 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:52,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 23:55:52,087 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:55:52,087 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:55:52,087 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:55:52,087 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 23:55:52,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:52,107 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:55:52,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:52,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:55:52,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:52,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:55:52,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:55:52,814 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2021-10-28 23:55:52,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 98 states and 122 transitions. cyclomatic complexity: 26 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:55:53,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:53,249 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 98 states and 122 transitions. cyclomatic complexity: 26. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 330 states and 436 transitions. Complement of second has 46 states. [2021-10-28 23:55:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2021-10-28 23:55:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:55:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2021-10-28 23:55:53,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2021-10-28 23:55:53,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:53,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2021-10-28 23:55:53,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:53,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2021-10-28 23:55:53,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:53,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 330 states and 436 transitions. [2021-10-28 23:55:53,271 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2021-10-28 23:55:53,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 330 states to 287 states and 389 transitions. [2021-10-28 23:55:53,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-28 23:55:53,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 190 [2021-10-28 23:55:53,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 389 transitions. [2021-10-28 23:55:53,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:53,292 INFO L681 BuchiCegarLoop]: Abstraction has 287 states and 389 transitions. [2021-10-28 23:55:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 389 transitions. [2021-10-28 23:55:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2021-10-28 23:55:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 163 states have (on average 1.1533742331288344) internal successors, (188), 170 states have internal predecessors, (188), 53 states have call successors, (54), 35 states have call predecessors, (54), 45 states have return successors, (109), 55 states have call predecessors, (109), 51 states have call successors, (109) [2021-10-28 23:55:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2021-10-28 23:55:53,321 INFO L704 BuchiCegarLoop]: Abstraction has 261 states and 351 transitions. [2021-10-28 23:55:53,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:55:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:55:53,322 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 23:55:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:53,499 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2021-10-28 23:55:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:55:53,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 146 transitions. [2021-10-28 23:55:53,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:55:53,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 119 states and 141 transitions. [2021-10-28 23:55:53,503 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-28 23:55:53,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-10-28 23:55:53,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 141 transitions. [2021-10-28 23:55:53,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:53,505 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 141 transitions. [2021-10-28 23:55:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 141 transitions. [2021-10-28 23:55:53,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2021-10-28 23:55:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 77 states have internal predecessors, (83), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (33), 20 states have call predecessors, (33), 17 states have call successors, (33) [2021-10-28 23:55:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2021-10-28 23:55:53,513 INFO L704 BuchiCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-10-28 23:55:53,513 INFO L587 BuchiCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-10-28 23:55:53,513 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:55:53,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states and 135 transitions. [2021-10-28 23:55:53,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:55:53,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:53,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:53,524 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:53,524 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:53,528 INFO L791 eck$LassoCheckResult]: Stem: 4188#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); 4189#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4208#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4232#fibo1ENTRY ~n := #in~n; 4237#L10 assume !(~n < 1); 4244#L12 assume !(1 == ~n); 4218#L15 call #t~ret7 := fibo2(~n - 1);< 4243#fibo2ENTRY ~n := #in~n; 4271#L20 assume !(~n < 1); 4269#L22 assume !(1 == ~n); 4205#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4206#L10 assume !(~n < 1); 4220#L12 assume !(1 == ~n); 4194#L15 call #t~ret7 := fibo2(~n - 1);< 4225#fibo2ENTRY ~n := #in~n; 4227#L20 assume !(~n < 1); 4193#L22 assume !(1 == ~n); 4195#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4206#L10 assume !(~n < 1); 4220#L12 assume !(1 == ~n); 4194#L15 call #t~ret7 := fibo2(~n - 1);< 4225#fibo2ENTRY ~n := #in~n; 4227#L20 assume !(~n < 1); 4193#L22 assume !(1 == ~n); 4195#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4207#L10 assume !(~n < 1); 4238#L12 assume 1 == ~n;#res := 1; 4239#fibo1FINAL assume true; 4276#fibo1EXIT >#46#return; 4273#L25-1 call #t~ret10 := fibo1(~n - 2);< 4274#fibo1ENTRY ~n := #in~n; 4277#L10 assume ~n < 1;#res := 0; 4275#fibo1FINAL assume true; 4272#fibo1EXIT >#48#return; 4270#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4268#fibo2FINAL assume true; 4265#fibo2EXIT >#50#return; 4191#L15-1 call #t~ret8 := fibo2(~n - 2);< 4229#fibo2ENTRY ~n := #in~n; 4226#L20 assume ~n < 1;#res := 0; 4192#fibo2FINAL assume true; 4221#fibo2EXIT >#52#return; 4260#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4256#fibo1FINAL assume true; 4253#fibo1EXIT >#46#return; 4211#L25-1 [2021-10-28 23:55:53,528 INFO L793 eck$LassoCheckResult]: Loop: 4211#L25-1 call #t~ret10 := fibo1(~n - 2);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume !(1 == ~n); 4215#L15 call #t~ret7 := fibo2(~n - 1);< 4236#fibo2ENTRY ~n := #in~n; 4235#L20 assume !(~n < 1); 4233#L22 assume !(1 == ~n); 4213#L25 call #t~ret9 := fibo1(~n - 1);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume !(1 == ~n); 4215#L15 call #t~ret7 := fibo2(~n - 1);< 4236#fibo2ENTRY ~n := #in~n; 4235#L20 assume !(~n < 1); 4233#L22 assume !(1 == ~n); 4213#L25 call #t~ret9 := fibo1(~n - 1);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume 1 == ~n;#res := 1; 4241#fibo1FINAL assume true; 4267#fibo1EXIT >#46#return; 4202#L25-1 call #t~ret10 := fibo1(~n - 2);< 4201#fibo1ENTRY ~n := #in~n; 4203#L10 assume ~n < 1;#res := 0; 4246#fibo1FINAL assume true; 4300#fibo1EXIT >#48#return; 4266#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4264#fibo2FINAL assume true; 4263#fibo2EXIT >#50#return; 4258#L15-1 call #t~ret8 := fibo2(~n - 2);< 4259#fibo2ENTRY ~n := #in~n; 4296#L20 assume ~n < 1;#res := 0; 4292#fibo2FINAL assume true; 4290#fibo2EXIT >#52#return; 4255#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4254#fibo1FINAL assume true; 4252#fibo1EXIT >#46#return; 4211#L25-1 [2021-10-28 23:55:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2021-10-28 23:55:53,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:53,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439822669] [2021-10-28 23:55:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:53,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 23:55:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 23:55:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:55:53,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:53,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439822669] [2021-10-28 23:55:53,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439822669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:53,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600940841] [2021-10-28 23:55:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:53,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:53,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:53,728 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:53,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-28 23:55:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:53,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:55:53,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 23:55:54,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600940841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:54,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:54,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-28 23:55:54,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402647522] [2021-10-28 23:55:54,097 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:55:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2021-10-28 23:55:54,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:54,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372625145] [2021-10-28 23:55:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:54,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 23:55:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 23:55:54,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:54,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372625145] [2021-10-28 23:55:54,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372625145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:54,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748677439] [2021-10-28 23:55:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:54,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:54,180 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:54,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-28 23:55:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:55:54,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 23:55:54,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748677439] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:54,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:54,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 23:55:54,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647851914] [2021-10-28 23:55:54,527 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:55:54,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:55:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:55:54,528 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. cyclomatic complexity: 24 Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 23:55:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:54,663 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2021-10-28 23:55:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:55:54,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 141 transitions. [2021-10-28 23:55:54,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 23:55:54,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 117 states and 137 transitions. [2021-10-28 23:55:54,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 102 [2021-10-28 23:55:54,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2021-10-28 23:55:54,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 137 transitions. [2021-10-28 23:55:54,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:54,668 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 137 transitions. [2021-10-28 23:55:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 137 transitions. [2021-10-28 23:55:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2021-10-28 23:55:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.105263157894737) internal successors, (84), 78 states have internal predecessors, (84), 19 states have call successors, (19), 16 states have call predecessors, (19), 20 states have return successors, (32), 20 states have call predecessors, (32), 17 states have call successors, (32) [2021-10-28 23:55:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2021-10-28 23:55:54,694 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-10-28 23:55:54,694 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-10-28 23:55:54,694 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:55:54,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 135 transitions. [2021-10-28 23:55:54,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 23:55:54,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:54,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:54,697 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:54,698 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 23:55:54,698 INFO L791 eck$LassoCheckResult]: Stem: 4831#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); 4832#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4852#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4875#fibo1ENTRY ~n := #in~n; 4886#L10 assume !(~n < 1); 4884#L12 assume !(1 == ~n); 4881#L15 call #t~ret7 := fibo2(~n - 1);< 4882#fibo2ENTRY ~n := #in~n; 4900#L20 assume !(~n < 1); 4898#L22 assume !(1 == ~n); 4848#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4849#L10 assume !(~n < 1); 4864#L12 assume !(1 == ~n); 4837#L15 call #t~ret7 := fibo2(~n - 1);< 4869#fibo2ENTRY ~n := #in~n; 4871#L20 assume !(~n < 1); 4836#L22 assume !(1 == ~n); 4838#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4849#L10 assume !(~n < 1); 4864#L12 assume !(1 == ~n); 4837#L15 call #t~ret7 := fibo2(~n - 1);< 4869#fibo2ENTRY ~n := #in~n; 4871#L20 assume !(~n < 1); 4836#L22 assume !(1 == ~n); 4838#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4850#L10 assume !(~n < 1); 4891#L12 assume 1 == ~n;#res := 1; 4892#fibo1FINAL assume true; 4851#fibo1EXIT >#46#return; 4842#L25-1 call #t~ret10 := fibo1(~n - 2);< 4843#fibo1ENTRY ~n := #in~n; 4940#L10 assume ~n < 1;#res := 0; 4939#fibo1FINAL assume true; 4938#fibo1EXIT >#48#return; 4861#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4862#fibo2FINAL assume true; 4935#fibo2EXIT >#50#return; 4903#L15-1 call #t~ret8 := fibo2(~n - 2);< 4904#fibo2ENTRY ~n := #in~n; 4914#L20 assume !(~n < 1); 4910#L22 assume 1 == ~n;#res := 1; 4907#fibo2FINAL assume true; 4902#fibo2EXIT >#52#return; 4901#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4899#fibo1FINAL assume true; 4897#fibo1EXIT >#46#return; 4859#L25-1 [2021-10-28 23:55:54,698 INFO L793 eck$LassoCheckResult]: Loop: 4859#L25-1 call #t~ret10 := fibo1(~n - 2);< 4890#fibo1ENTRY ~n := #in~n; 4945#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume !(1 == ~n); 4853#L25 call #t~ret9 := fibo1(~n - 1);< 4856#fibo1ENTRY ~n := #in~n; 4895#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume !(1 == ~n); 4853#L25 call #t~ret9 := fibo1(~n - 1);< 4856#fibo1ENTRY ~n := #in~n; 4895#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume 1 == ~n;#res := 1; 4865#fibo2FINAL assume true; 4866#fibo2EXIT >#50#return; 4857#L15-1 call #t~ret8 := fibo2(~n - 2);< 4860#fibo2ENTRY ~n := #in~n; 4936#L20 assume ~n < 1;#res := 0; 4926#fibo2FINAL assume true; 4872#fibo2EXIT >#52#return; 4874#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4876#fibo1FINAL assume true; 4887#fibo1EXIT >#46#return; 4888#L25-1 call #t~ret10 := fibo1(~n - 2);< 4942#fibo1ENTRY ~n := #in~n; 4944#L10 assume ~n < 1;#res := 0; 4941#fibo1FINAL assume true; 4917#fibo1EXIT >#48#return; 4916#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4915#fibo2FINAL assume true; 4913#fibo2EXIT >#50#return; 4873#L15-1 call #t~ret8 := fibo2(~n - 2);< 4909#fibo2ENTRY ~n := #in~n; 4925#L20 assume !(~n < 1); 4923#L22 assume 1 == ~n;#res := 1; 4921#fibo2FINAL assume true; 4908#fibo2EXIT >#52#return; 4906#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4905#fibo1FINAL assume true; 4896#fibo1EXIT >#46#return; 4859#L25-1 [2021-10-28 23:55:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2021-10-28 23:55:54,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:54,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586479615] [2021-10-28 23:55:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:54,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 23:55:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 23:55:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:55:54,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:54,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586479615] [2021-10-28 23:55:54,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586479615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:54,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647180476] [2021-10-28 23:55:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:54,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:54,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:54,855 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:54,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-28 23:55:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:55:55,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 23:55:55,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647180476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:55,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:55,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-28 23:55:55,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807398415] [2021-10-28 23:55:55,231 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:55:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2021-10-28 23:55:55,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:55,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068567772] [2021-10-28 23:55:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:55,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:55:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 23:55:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-10-28 23:55:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,342 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-28 23:55:55,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:55,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068567772] [2021-10-28 23:55:55,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068567772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:55,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808933000] [2021-10-28 23:55:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:55,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:55,349 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:55,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-28 23:55:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:55:55,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 23:55:55,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808933000] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:55,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:55,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 23:55:55,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697337744] [2021-10-28 23:55:55,738 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:55:55,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:55,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 23:55:55,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:55:55,739 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. cyclomatic complexity: 22 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 10 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-28 23:55:56,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:56,106 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-10-28 23:55:56,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:55:56,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 130 transitions. [2021-10-28 23:55:56,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:55:56,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 89 states and 95 transitions. [2021-10-28 23:55:56,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-10-28 23:55:56,111 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-28 23:55:56,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2021-10-28 23:55:56,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:55:56,112 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 23:55:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2021-10-28 23:55:56,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-10-28 23:55:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-10-28 23:55:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-10-28 23:55:56,116 INFO L704 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 23:55:56,116 INFO L587 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 23:55:56,116 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:55:56,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2021-10-28 23:55:56,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:55:56,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:56,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:56,119 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:56,119 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:55:56,119 INFO L791 eck$LassoCheckResult]: Stem: 5582#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); 5583#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 5601#L39 call main_#t~ret11 := fibo1(main_~x~0);< 5622#fibo1ENTRY ~n := #in~n; 5626#L10 assume !(~n < 1); 5648#L12 assume !(1 == ~n); 5588#L15 call #t~ret7 := fibo2(~n - 1);< 5616#fibo2ENTRY ~n := #in~n; 5619#L20 assume !(~n < 1); 5587#L22 assume !(1 == ~n); 5589#L25 call #t~ret9 := fibo1(~n - 1);< 5597#fibo1ENTRY ~n := #in~n; 5599#L10 assume !(~n < 1); 5613#L12 assume !(1 == ~n); 5593#L15 call #t~ret7 := fibo2(~n - 1);< 5646#fibo2ENTRY ~n := #in~n; 5644#L20 assume !(~n < 1); 5642#L22 assume !(1 == ~n); 5598#L25 call #t~ret9 := fibo1(~n - 1);< 5597#fibo1ENTRY ~n := #in~n; 5600#L10 assume !(~n < 1); 5611#L12 assume 1 == ~n;#res := 1; 5612#fibo1FINAL assume true; 5670#fibo1EXIT >#46#return; 5591#L25-1 call #t~ret10 := fibo1(~n - 2);< 5594#fibo1ENTRY ~n := #in~n; 5596#L10 assume ~n < 1;#res := 0; 5590#fibo1FINAL assume true; 5592#fibo1EXIT >#48#return; 5595#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 5602#fibo2FINAL assume true; 5614#fibo2EXIT >#50#return; 5585#L15-1 call #t~ret8 := fibo2(~n - 2);< 5637#fibo2ENTRY ~n := #in~n; 5656#L20 assume !(~n < 1); 5584#L22 assume 1 == ~n;#res := 1; 5586#fibo2FINAL assume true; 5636#fibo2EXIT >#52#return; 5634#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5633#fibo1FINAL assume true; 5631#fibo1EXIT >#46#return; 5607#L25-1 call #t~ret10 := fibo1(~n - 2);< 5628#fibo1ENTRY ~n := #in~n; 5669#L10 assume !(~n < 1); 5623#L12 [2021-10-28 23:55:56,120 INFO L793 eck$LassoCheckResult]: Loop: 5623#L12 assume !(1 == ~n); 5609#L15 call #t~ret7 := fibo2(~n - 1);< 5615#fibo2ENTRY ~n := #in~n; 5657#L20 assume !(~n < 1); 5654#L22 assume !(1 == ~n); 5604#L25 call #t~ret9 := fibo1(~n - 1);< 5610#fibo1ENTRY ~n := #in~n; 5625#L10 assume !(~n < 1); 5623#L12 [2021-10-28 23:55:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:56,120 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2021-10-28 23:55:56,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:56,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193117447] [2021-10-28 23:55:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:56,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:56,135 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:56,149 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2021-10-28 23:55:56,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:56,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860825562] [2021-10-28 23:55:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:56,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:56,157 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:56,159 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2021-10-28 23:55:56,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:56,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731755093] [2021-10-28 23:55:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:56,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 23:55:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:55:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:55:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 23:55:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 23:55:56,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:56,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731755093] [2021-10-28 23:55:56,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731755093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:56,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716845693] [2021-10-28 23:55:56,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:55:56,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:55:56,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:56,276 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:55:56,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-28 23:55:56,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 23:55:56,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:55:56,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:55:56,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 23:55:56,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716845693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:55:56,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:55:56,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-28 23:55:56,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859772708] [2021-10-28 23:55:56,844 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:56,844 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:56,844 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:56,845 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:56,845 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:55:56,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:56,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:56,845 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:56,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-10-28 23:55:56,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:56,845 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:56,846 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 23:55:56,854 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 23:55:56,856 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 23:55:56,858 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 23:55:56,859 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 23:55:56,861 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 23:55:56,863 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 23:55:56,865 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 23:55:56,875 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 23:55:56,933 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:56,934 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:55:56,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:56,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:56,937 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:56,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:56,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:56,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 23:55:56,964 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:56,965 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 23:55:56,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:56,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:56,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,001 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:57,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:57,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 23:55:57,019 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:57,019 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 23:55:57,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-10-28 23:55:57,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:57,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,039 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:57,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:57,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 23:55:57,052 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:57,052 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 23:55:57,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:57,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:57,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,072 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 23:55:57,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:57,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:57,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:57,081 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 23:55:57,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-10-28 23:55:57,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:57,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,101 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 23:55:57,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:57,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:57,110 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:57,110 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 23:55:57,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-10-28 23:55:57,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:57,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,130 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 23:55:57,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:57,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:57,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:57,139 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 23:55:57,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:57,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:57,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,159 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 23:55:57,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:57,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:57,169 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:55:57,169 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 23:55:57,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-10-28 23:55:57,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:57,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,189 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 23:55:57,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:55:57,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:57,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-10-28 23:55:57,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:57,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:57,231 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:57,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 23:55:57,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:55:57,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:55:58,143 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:55:58,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:58,146 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:55:58,146 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:55:58,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:55:58,147 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:55:58,147 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:55:58,147 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,147 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:55:58,147 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:55:58,147 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-10-28 23:55:58,147 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:55:58,147 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:55:58,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:58,152 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 23:55:58,154 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 23:55:58,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:58,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:58,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:58,160 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 23:55:58,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:58,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:55:58,213 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:55:58,213 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:55:58,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,216 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 23:55:58,218 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 23:55:58,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,225 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,245 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:58,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-10-28 23:55:58,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,270 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-28 23:55:58,271 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 23:55:58,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,316 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:58,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:58,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,341 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-28 23:55:58,342 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 23:55:58,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,350 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:58,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:58,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,370 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-28 23:55:58,372 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 23:55:58,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,381 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:58,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:58,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,400 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 23:55:58,403 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 23:55:58,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,412 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:58,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:58,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,431 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 23:55:58,432 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 23:55:58,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,440 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,440 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,441 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:58,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-10-28 23:55:58,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,460 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 23:55:58,461 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 23:55:58,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,469 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,469 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,470 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:55:58,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-10-28 23:55:58,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,489 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 23:55:58,490 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 23:55:58,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:55:58,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:55:58,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:55:58,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:55:58,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:55:58,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:55:58,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:55:58,501 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:55:58,502 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:55:58,502 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:55:58,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:58,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:58,522 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:58,523 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:55:58,523 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:55:58,523 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:55:58,523 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 23:55:58,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 23:55:58,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:58,585 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:55:58,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-28 23:55:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:58,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:55:58,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:59,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:55:59,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:59,240 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 23:55:59,241 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 23:55:59,241 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:55:59,321 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-10-28 23:55:59,322 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 23:55:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:55:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-10-28 23:55:59,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 23:55:59,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:55:59,323 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:55:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:59,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:55:59,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:55:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:59,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:55:59,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:56:00,069 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 23:56:00,072 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 23:56:00,073 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:56:00,152 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-10-28 23:56:00,153 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 23:56:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:56:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-10-28 23:56:00,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 23:56:00,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:56:00,153 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:56:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:00,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:56:00,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:56:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:56:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:56:00,904 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 23:56:00,905 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 23:56:00,905 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:56:01,029 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2021-10-28 23:56:01,030 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 23:56:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:56:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2021-10-28 23:56:01,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 23:56:01,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:56:01,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2021-10-28 23:56:01,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:56:01,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2021-10-28 23:56:01,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:56:01,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2021-10-28 23:56:01,037 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:56:01,037 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-10-28 23:56:01,037 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:56:01,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:56:01,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:56:01,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:56:01,037 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:56:01,038 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:56:01,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:01,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:56:01,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:56:01,039 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:56:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:01,039 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 23:56:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:56:01,039 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 23:56:01,039 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:56:01,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:56:01,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:56:01,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:56:01,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:56:01,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:56:01,040 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:56:01,040 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:56:01,040 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:56:01,040 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:56:01,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:56:01,041 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:56:01,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:56:01,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:56:01 BoogieIcfgContainer [2021-10-28 23:56:01,047 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:56:01,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:56:01,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:56:01,050 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:56:01,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:40" (3/4) ... [2021-10-28 23:56:01,054 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:56:01,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:56:01,056 INFO L168 Benchmark]: Toolchain (without parser) took 20941.28 ms. Allocated memory was 127.9 MB in the beginning and 201.3 MB in the end (delta: 73.4 MB). Free memory was 87.2 MB in the beginning and 82.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 78.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:01,056 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 127.9 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:56:01,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.91 ms. Allocated memory is still 127.9 MB. Free memory was 87.1 MB in the beginning and 101.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:01,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.10 ms. Allocated memory is still 127.9 MB. Free memory was 101.9 MB in the beginning and 100.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:01,058 INFO L168 Benchmark]: Boogie Preprocessor took 34.64 ms. Allocated memory is still 127.9 MB. Free memory was 100.4 MB in the beginning and 99.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:56:01,058 INFO L168 Benchmark]: RCFGBuilder took 334.43 ms. Allocated memory is still 127.9 MB. Free memory was 99.2 MB in the beginning and 89.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:01,059 INFO L168 Benchmark]: BuchiAutomizer took 20245.20 ms. Allocated memory was 127.9 MB in the beginning and 201.3 MB in the end (delta: 73.4 MB). Free memory was 89.4 MB in the beginning and 82.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:01,059 INFO L168 Benchmark]: Witness Printer took 4.95 ms. Allocated memory is still 201.3 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:56:01,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 127.9 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.91 ms. Allocated memory is still 127.9 MB. Free memory was 87.1 MB in the beginning and 101.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.10 ms. Allocated memory is still 127.9 MB. Free memory was 101.9 MB in the beginning and 100.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.64 ms. Allocated memory is still 127.9 MB. Free memory was 100.4 MB in the beginning and 99.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 334.43 ms. Allocated memory is still 127.9 MB. Free memory was 99.2 MB in the beginning and 89.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 20245.20 ms. Allocated memory was 127.9 MB in the beginning and 201.3 MB in the end (delta: 73.4 MB). Free memory was 89.4 MB in the beginning and 82.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.95 ms. Allocated memory is still 201.3 MB. Free memory is still 82.0 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 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 20.2s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 13.3s. Construction of modules took 1.2s. Büchi inclusion checks took 5.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 98 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 184 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 244 SDtfs, 525 SDslu, 839 SDs, 0 SdLazy, 1958 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf91 lsp90 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf91 smp86 dnf100 smp100 tf109 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:56:01,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-28 23:56:01,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-28 23:56:01,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-28 23:56:01,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-28 23:56:01,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-28 23:56:02,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-28 23:56:02,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-28 23:56:02,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:56:02,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-28 23:56:02,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 23:56:03,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0880ead-100f-4a07-b44c-0d346874bc7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...