./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:46:41,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:46:41,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:46:41,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:46:41,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:46:41,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:46:41,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:46:41,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:46:41,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:46:41,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:46:41,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:46:41,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:46:41,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:46:41,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:46:41,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:46:41,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:46:41,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:46:41,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:46:41,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:46:41,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:46:41,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:46:41,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:46:41,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:46:41,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:46:41,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:46:41,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:46:41,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:46:41,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:46:41,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:46:41,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:46:41,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:46:41,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:46:41,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:46:41,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:46:41,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:46:41,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:46:41,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:46:41,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:46:41,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:46:41,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:46:41,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:46:41,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:46:42,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:46:42,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:46:42,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:46:42,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:46:42,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:46:42,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:46:42,008 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:46:42,009 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:46:42,009 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:46:42,009 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:46:42,010 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:46:42,011 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:46:42,011 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:46:42,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:46:42,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:46:42,012 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:46:42,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:46:42,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:46:42,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:46:42,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:46:42,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:46:42,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:46:42,014 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:46:42,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:46:42,014 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:46:42,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:46:42,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:46:42,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:46:42,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:46:42,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:46:42,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:46:42,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:46:42,020 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:46:42,020 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_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2021-10-28 09:46:42,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:46:42,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:46:42,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:46:42,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:46:42,394 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:46:42,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2021-10-28 09:46:42,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/data/2a49cb2bc/1268fab5a2374091a84389c7dc2ff9ac/FLAG5fadf11f3 [2021-10-28 09:46:43,141 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:46:43,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2021-10-28 09:46:43,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/data/2a49cb2bc/1268fab5a2374091a84389c7dc2ff9ac/FLAG5fadf11f3 [2021-10-28 09:46:43,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/data/2a49cb2bc/1268fab5a2374091a84389c7dc2ff9ac [2021-10-28 09:46:43,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:46:43,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:46:43,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:46:43,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:46:43,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:46:43,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708c2314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43, skipping insertion in model container [2021-10-28 09:46:43,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:46:43,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:46:43,813 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_bc888232-7d3c-455b-b7dd-d51fb10674b9/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2021-10-28 09:46:43,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:46:43,832 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:46:43,850 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_bc888232-7d3c-455b-b7dd-d51fb10674b9/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2021-10-28 09:46:43,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:46:43,867 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:46:43,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43 WrapperNode [2021-10-28 09:46:43,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:46:43,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:46:43,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:46:43,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:46:43,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:46:43,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:46:43,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:46:43,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:46:43,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:46:43,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:46:43,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:46:43,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:46:43,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (1/1) ... [2021-10-28 09:46:43,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:43,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:43,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:46:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:46:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:46:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:46:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:46:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2021-10-28 09:46:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2021-10-28 09:46:44,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:46:44,279 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 09:46:44,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:46:44 BoogieIcfgContainer [2021-10-28 09:46:44,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:46:44,282 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:46:44,283 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:46:44,305 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:46:44,305 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:46:44,306 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:46:43" (1/3) ... [2021-10-28 09:46:44,307 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@379fee15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:46:44, skipping insertion in model container [2021-10-28 09:46:44,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:46:44,308 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:46:43" (2/3) ... [2021-10-28 09:46:44,308 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@379fee15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:46:44, skipping insertion in model container [2021-10-28 09:46:44,308 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:46:44,308 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:46:44" (3/3) ... [2021-10-28 09:46:44,310 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_7-1.c [2021-10-28 09:46:44,377 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:46:44,377 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:46:44,378 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:46:44,378 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:46:44,378 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:46:44,378 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:46:44,378 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:46:44,378 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:46:44,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:46:44,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:46:44,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:44,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:44,446 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:46:44,447 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:46:44,447 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:46:44,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:46:44,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:46:44,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:44,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:44,453 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:46:44,453 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:46:44,477 INFO L791 eck$LassoCheckResult]: Stem: 4#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13#L-1true havoc main_#res;havoc main_#t~ret9, main_~x~0, main_~result~0;main_~x~0 := 7; 6#L27true call main_#t~ret9 := fibo(main_~x~0);< 7#fiboENTRYtrue [2021-10-28 09:46:44,478 INFO L793 eck$LassoCheckResult]: Loop: 7#fiboENTRYtrue ~n := #in~n; 8#L8true assume !(~n < 1); 10#L10true assume !(1 == ~n); 15#L13true call #t~ret7 := fibo(~n - 1);< 7#fiboENTRYtrue [2021-10-28 09:46:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2021-10-28 09:46:44,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:44,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698835326] [2021-10-28 09:46:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:44,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:44,639 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:46:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:44,684 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:46:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2021-10-28 09:46:44,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:44,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957769695] [2021-10-28 09:46:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:44,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:44,697 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:46:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:44,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:46:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2021-10-28 09:46:44,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:44,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819827401] [2021-10-28 09:46:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:44,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:44,733 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:46:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:44,783 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:46:44,971 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:46:44,972 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:46:44,972 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:46:44,972 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:46:44,972 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:46:44,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:44,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:46:44,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:46:44,974 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration1_Loop [2021-10-28 09:46:44,974 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:46:44,974 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:46:44,996 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 09:46:45,004 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 09:46:45,007 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 09:46:45,012 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 09:46:45,015 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 09:46:45,095 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:46:45,096 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:46:45,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:45,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:45,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:46:45,144 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:46:45,144 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:46:45,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:45,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:45,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:46:45,231 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:46:45,231 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:46:45,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:45,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:45,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:46:45,314 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:46:45,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret7=0} Honda state: {fibo_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:46:45,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:46:45,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:45,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:45,392 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:46:45,392 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret8=0} Honda state: {fibo_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:46:45,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,425 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:46:45,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:45,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:45,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-28 09:46:45,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:46:45,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:46:45,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:45,605 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:46:45,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,624 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:46:45,624 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:46:45,624 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:46:45,624 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:46:45,624 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:46:45,625 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,625 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:46:45,625 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:46:45,625 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration1_Loop [2021-10-28 09:46:45,625 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:46:45,625 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:46:45,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:46:45,633 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 09:46:45,636 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 09:46:45,641 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 09:46:45,645 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 09:46:45,715 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:46:45,720 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:46:45,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,734 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 09:46:45,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:45,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:45,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:45,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:45,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:45,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:46:45,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:45,762 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:45,778 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:46:45,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:46:45,822 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 09:46:45,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:45,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:45,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:45,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:45,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:45,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:45,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:45,848 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:46:45,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:46:45,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:46:45,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:45,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:45,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:45,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:45,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:45,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:45,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:45,929 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:46:45,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:45,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:45,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:45,959 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:45,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:46:45,964 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 09:46:45,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:45,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:45,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:45,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:45,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:45,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:45,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:45,988 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:46:46,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:46,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:46,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:46,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:46:46,034 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 09:46:46,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:46,043 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:46,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:46,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:46,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:46,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:46,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:46,055 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:46:46,063 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:46:46,063 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:46:46,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:46,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:46,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:46:46,090 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:46:46,091 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:46:46,091 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:46:46,092 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2021-10-28 09:46:46,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:46,139 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:46:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:46,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:46:46,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:46,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:46:46,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:46,375 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 09:46:46,390 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 09:46:46,391 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:46,494 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2021-10-28 09:46:46,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:46:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-28 09:46:46,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-28 09:46:46,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:46,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-28 09:46:46,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:46,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-28 09:46:46,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:46,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2021-10-28 09:46:46,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:46:46,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2021-10-28 09:46:46,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:46:46,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-10-28 09:46:46,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2021-10-28 09:46:46,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:46,537 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-10-28 09:46:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2021-10-28 09:46:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2021-10-28 09:46:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:46:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-10-28 09:46:46,581 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-10-28 09:46:46,581 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-10-28 09:46:46,581 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:46:46,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2021-10-28 09:46:46,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:46:46,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:46,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:46,588 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:46,588 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:46,589 INFO L791 eck$LassoCheckResult]: Stem: 122#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 123#L-1 havoc main_#res;havoc main_#t~ret9, main_~x~0, main_~result~0;main_~x~0 := 7; 128#L27 call main_#t~ret9 := fibo(main_~x~0);< 132#fiboENTRY ~n := #in~n; 133#L8 assume !(~n < 1); 138#L10 assume !(1 == ~n); 127#L13 call #t~ret7 := fibo(~n - 1);< 129#fiboENTRY ~n := #in~n; 134#L8 assume ~n < 1;#res := 0; 135#fiboFINAL assume true; 136#fiboEXIT >#33#return; 125#L13-1 [2021-10-28 09:46:46,589 INFO L793 eck$LassoCheckResult]: Loop: 125#L13-1 call #t~ret8 := fibo(~n - 2);< 126#fiboENTRY ~n := #in~n; 141#L8 assume !(~n < 1); 140#L10 assume !(1 == ~n); 124#L13 call #t~ret7 := fibo(~n - 1);< 126#fiboENTRY ~n := #in~n; 141#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 139#fiboEXIT >#33#return; 125#L13-1 [2021-10-28 09:46:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:46,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2021-10-28 09:46:46,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:46,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803715961] [2021-10-28 09:46:46,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:46,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:46,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:46:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:46,760 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 09:46:46,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:46,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803715961] [2021-10-28 09:46:46,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803715961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:46:46,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:46:46,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:46:46,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284118369] [2021-10-28 09:46:46,769 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:46:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:46,772 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2021-10-28 09:46:46,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:46,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837915313] [2021-10-28 09:46:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:46,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:46:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:46,826 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 09:46:46,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:46,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837915313] [2021-10-28 09:46:46,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837915313] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:46:46,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:46:46,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:46:46,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622543824] [2021-10-28 09:46:46,829 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:46:46,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:46,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:46:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:46:46,834 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:46:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:46,922 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-10-28 09:46:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:46:46,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2021-10-28 09:46:46,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:46:46,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2021-10-28 09:46:46,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 09:46:46,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-28 09:46:46,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2021-10-28 09:46:46,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:46,939 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-10-28 09:46:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2021-10-28 09:46:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-28 09:46:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:46:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2021-10-28 09:46:46,949 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-10-28 09:46:46,949 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-10-28 09:46:46,949 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:46:46,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2021-10-28 09:46:46,952 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:46:46,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:46,953 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:46,954 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:46,954 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:46,954 INFO L791 eck$LassoCheckResult]: Stem: 195#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 196#L-1 havoc main_#res;havoc main_#t~ret9, main_~x~0, main_~result~0;main_~x~0 := 7; 201#L27 call main_#t~ret9 := fibo(main_~x~0);< 205#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 211#L10 assume !(1 == ~n); 200#L13 call #t~ret7 := fibo(~n - 1);< 202#fiboENTRY ~n := #in~n; 208#L8 assume !(~n < 1); 210#L10 assume 1 == ~n;#res := 1; 212#fiboFINAL assume true; 214#fiboEXIT >#33#return; 198#L13-1 [2021-10-28 09:46:46,955 INFO L793 eck$LassoCheckResult]: Loop: 198#L13-1 call #t~ret8 := fibo(~n - 2);< 199#fiboENTRY ~n := #in~n; 217#L8 assume !(~n < 1); 215#L10 assume !(1 == ~n); 197#L13 call #t~ret7 := fibo(~n - 1);< 199#fiboENTRY ~n := #in~n; 217#L8 assume !(~n < 1); 215#L10 assume 1 == ~n;#res := 1; 216#fiboFINAL assume true; 213#fiboEXIT >#33#return; 198#L13-1 [2021-10-28 09:46:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2021-10-28 09:46:46,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:46,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119522926] [2021-10-28 09:46:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:46,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:46:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:46:47,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:47,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119522926] [2021-10-28 09:46:47,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119522926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:47,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477598688] [2021-10-28 09:46:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:47,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:47,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:47,085 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:46:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:47,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:46:47,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:47,267 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 09:46:47,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477598688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:47,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:47,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 09:46:47,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289747813] [2021-10-28 09:46:47,268 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:46:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2021-10-28 09:46:47,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:47,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5095534] [2021-10-28 09:46:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:47,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:47,285 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:46:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:47,292 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:46:47,466 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:46:47,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:46:47,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:46:47,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:46:47,467 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:46:47,468 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:47,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:46:47,468 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:46:47,468 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration3_Loop [2021-10-28 09:46:47,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:46:47,468 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:46:47,470 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 09:46:47,473 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 09:46:47,482 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 09:46:47,485 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 09:46:47,546 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:46:47,546 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:46:47,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:47,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:47,555 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:47,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:47,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:47,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:46:47,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:46:47,587 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret8=0} Honda state: {fibo_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:46:47,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:47,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:47,636 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:47,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:46:47,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:47,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:47,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:47,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:47,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:47,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:47,777 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:47,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:46:47,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:46:47,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:49,042 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:46:49,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:49,049 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:46:49,049 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:46:49,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:46:49,049 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:46:49,049 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:46:49,050 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:49,050 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:46:49,050 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:46:49,050 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration3_Loop [2021-10-28 09:46:49,050 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:46:49,050 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:46:49,052 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 09:46:49,064 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 09:46:49,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:46:49,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:46:49,121 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:46:49,122 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:46:49,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:49,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:49,123 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:49,135 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 09:46:49,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:49,146 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:49,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:49,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:49,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:49,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:49,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:49,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:46:49,161 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:46:49,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:49,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:49,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:49,201 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:49,211 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 09:46:49,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:49,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:49,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:49,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:49,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:49,225 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:49,225 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:49,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:46:49,237 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:46:49,245 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:46:49,245 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:46:49,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:49,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:49,247 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:49,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:46:49,258 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:46:49,259 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:46:49,259 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:46:49,259 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2021-10-28 09:46:49,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:49,306 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:46:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:49,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:46:49,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:49,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:46:49,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:49,745 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 09:46:49,746 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-28 09:46:49,747 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:46:50,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2021-10-28 09:46:50,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-28 09:46:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:46:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2021-10-28 09:46:50,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2021-10-28 09:46:50,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:50,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2021-10-28 09:46:50,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:50,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2021-10-28 09:46:50,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:50,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2021-10-28 09:46:50,038 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 09:46:50,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2021-10-28 09:46:50,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-10-28 09:46:50,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2021-10-28 09:46:50,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2021-10-28 09:46:50,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:50,046 INFO L681 BuchiCegarLoop]: Abstraction has 108 states and 152 transitions. [2021-10-28 09:46:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2021-10-28 09:46:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2021-10-28 09:46:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2021-10-28 09:46:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2021-10-28 09:46:50,066 INFO L704 BuchiCegarLoop]: Abstraction has 94 states and 126 transitions. [2021-10-28 09:46:50,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:46:50,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:46:50,067 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:46:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:50,154 INFO L93 Difference]: Finished difference Result 109 states and 147 transitions. [2021-10-28 09:46:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:46:50,155 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 147 transitions. [2021-10-28 09:46:50,160 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 09:46:50,165 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 106 states and 144 transitions. [2021-10-28 09:46:50,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-28 09:46:50,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2021-10-28 09:46:50,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 144 transitions. [2021-10-28 09:46:50,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:50,167 INFO L681 BuchiCegarLoop]: Abstraction has 106 states and 144 transitions. [2021-10-28 09:46:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 144 transitions. [2021-10-28 09:46:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2021-10-28 09:46:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (32), 18 states have call predecessors, (32), 19 states have call successors, (32) [2021-10-28 09:46:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2021-10-28 09:46:50,185 INFO L704 BuchiCegarLoop]: Abstraction has 94 states and 125 transitions. [2021-10-28 09:46:50,185 INFO L587 BuchiCegarLoop]: Abstraction has 94 states and 125 transitions. [2021-10-28 09:46:50,185 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:46:50,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states and 125 transitions. [2021-10-28 09:46:50,187 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 09:46:50,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:50,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:50,190 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:50,190 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2021-10-28 09:46:50,191 INFO L791 eck$LassoCheckResult]: Stem: 736#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 737#L-1 havoc main_#res;havoc main_#t~ret9, main_~x~0, main_~result~0;main_~x~0 := 7; 743#L27 call main_#t~ret9 := fibo(main_~x~0);< 754#fiboENTRY ~n := #in~n; 798#L8 assume !(~n < 1); 778#L10 assume !(1 == ~n); 742#L13 call #t~ret7 := fibo(~n - 1);< 744#fiboENTRY ~n := #in~n; 759#L8 assume !(~n < 1); 775#L10 assume !(1 == ~n); 758#L13 call #t~ret7 := fibo(~n - 1);< 744#fiboENTRY ~n := #in~n; 759#L8 assume !(~n < 1); 775#L10 assume !(1 == ~n); 758#L13 call #t~ret7 := fibo(~n - 1);< 744#fiboENTRY ~n := #in~n; 760#L8 assume !(~n < 1); 797#L10 assume 1 == ~n;#res := 1; 796#fiboFINAL assume true; 795#fiboEXIT >#33#return; 756#L13-1 call #t~ret8 := fibo(~n - 2);< 755#fiboENTRY ~n := #in~n; 757#L8 assume ~n < 1;#res := 0; 774#fiboFINAL assume true; 825#fiboEXIT >#35#return; 821#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 819#fiboFINAL assume true; 817#fiboEXIT >#33#return; 739#L13-1 [2021-10-28 09:46:50,191 INFO L793 eck$LassoCheckResult]: Loop: 739#L13-1 call #t~ret8 := fibo(~n - 2);< 741#fiboENTRY ~n := #in~n; 799#L8 assume !(~n < 1); 776#L10 assume !(1 == ~n); 738#L13 call #t~ret7 := fibo(~n - 1);< 741#fiboENTRY ~n := #in~n; 799#L8 assume !(~n < 1); 776#L10 assume !(1 == ~n); 738#L13 call #t~ret7 := fibo(~n - 1);< 741#fiboENTRY ~n := #in~n; 799#L8 assume !(~n < 1); 776#L10 assume 1 == ~n;#res := 1; 777#fiboFINAL assume true; 815#fiboEXIT >#33#return; 739#L13-1 call #t~ret8 := fibo(~n - 2);< 741#fiboENTRY ~n := #in~n; 799#L8 assume !(~n < 1); 776#L10 assume !(1 == ~n); 738#L13 call #t~ret7 := fibo(~n - 1);< 741#fiboENTRY ~n := #in~n; 799#L8 assume !(~n < 1); 776#L10 assume 1 == ~n;#res := 1; 777#fiboFINAL assume true; 815#fiboEXIT >#33#return; 739#L13-1 call #t~ret8 := fibo(~n - 2);< 741#fiboENTRY ~n := #in~n; 799#L8 assume ~n < 1;#res := 0; 800#fiboFINAL assume true; 824#fiboEXIT >#35#return; 816#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 820#fiboFINAL assume true; 818#fiboEXIT >#35#return; 816#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 820#fiboFINAL assume true; 818#fiboEXIT >#33#return; 739#L13-1 [2021-10-28 09:46:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1557778097, now seen corresponding path program 1 times [2021-10-28 09:46:50,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:50,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021238564] [2021-10-28 09:46:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:50,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 09:46:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 09:46:50,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:50,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021238564] [2021-10-28 09:46:50,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021238564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:50,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839067616] [2021-10-28 09:46:50,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:50,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:50,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:50,370 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:50,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:46:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:46:50,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 09:46:50,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839067616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:50,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:50,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-10-28 09:46:50,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644257830] [2021-10-28 09:46:50,598 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:46:50,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1616897917, now seen corresponding path program 1 times [2021-10-28 09:46:50,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:50,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254335160] [2021-10-28 09:46:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:50,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:46:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 09:46:50,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:50,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254335160] [2021-10-28 09:46:50,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254335160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:50,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650791209] [2021-10-28 09:46:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:50,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:50,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:50,774 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:50,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:46:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:50,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:46:50,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 09:46:50,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650791209] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:50,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:50,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-28 09:46:50,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793386932] [2021-10-28 09:46:50,994 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:46:50,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:46:50,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:46:50,996 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. cyclomatic complexity: 36 Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 09:46:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:51,197 INFO L93 Difference]: Finished difference Result 116 states and 158 transitions. [2021-10-28 09:46:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:46:51,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 158 transitions. [2021-10-28 09:46:51,233 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-10-28 09:46:51,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 114 states and 156 transitions. [2021-10-28 09:46:51,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-10-28 09:46:51,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-10-28 09:46:51,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 156 transitions. [2021-10-28 09:46:51,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:51,246 INFO L681 BuchiCegarLoop]: Abstraction has 114 states and 156 transitions. [2021-10-28 09:46:51,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 156 transitions. [2021-10-28 09:46:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-10-28 09:46:51,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 76 states have internal predecessors, (85), 26 states have call successors, (27), 13 states have call predecessors, (27), 18 states have return successors, (44), 24 states have call predecessors, (44), 24 states have call successors, (44) [2021-10-28 09:46:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 156 transitions. [2021-10-28 09:46:51,271 INFO L704 BuchiCegarLoop]: Abstraction has 114 states and 156 transitions. [2021-10-28 09:46:51,271 INFO L587 BuchiCegarLoop]: Abstraction has 114 states and 156 transitions. [2021-10-28 09:46:51,271 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:46:51,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 156 transitions. [2021-10-28 09:46:51,278 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-10-28 09:46:51,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:51,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:51,281 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:51,282 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 6, 4, 4, 4, 4, 3, 3, 2, 2] [2021-10-28 09:46:51,282 INFO L791 eck$LassoCheckResult]: Stem: 1247#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1248#L-1 havoc main_#res;havoc main_#t~ret9, main_~x~0, main_~result~0;main_~x~0 := 7; 1265#L27 call main_#t~ret9 := fibo(main_~x~0);< 1266#fiboENTRY ~n := #in~n; 1308#L8 assume !(~n < 1); 1307#L10 assume !(1 == ~n); 1254#L13 call #t~ret7 := fibo(~n - 1);< 1268#fiboENTRY ~n := #in~n; 1269#L8 assume !(~n < 1); 1281#L10 assume !(1 == ~n); 1253#L13 call #t~ret7 := fibo(~n - 1);< 1255#fiboENTRY ~n := #in~n; 1305#L8 assume !(~n < 1); 1303#L10 assume !(1 == ~n); 1257#L13 call #t~ret7 := fibo(~n - 1);< 1255#fiboENTRY ~n := #in~n; 1305#L8 assume !(~n < 1); 1303#L10 assume !(1 == ~n); 1257#L13 call #t~ret7 := fibo(~n - 1);< 1255#fiboENTRY ~n := #in~n; 1306#L8 assume !(~n < 1); 1304#L10 assume 1 == ~n;#res := 1; 1302#fiboFINAL assume true; 1301#fiboEXIT >#33#return; 1275#L13-1 call #t~ret8 := fibo(~n - 2);< 1299#fiboENTRY ~n := #in~n; 1360#L8 assume ~n < 1;#res := 0; 1358#fiboFINAL assume true; 1274#fiboEXIT >#35#return; 1256#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1258#fiboFINAL assume true; 1270#fiboEXIT >#33#return; 1332#L13-1 [2021-10-28 09:46:51,282 INFO L793 eck$LassoCheckResult]: Loop: 1332#L13-1 call #t~ret8 := fibo(~n - 2);< 1342#fiboENTRY ~n := #in~n; 1346#L8 assume !(~n < 1); 1344#L10 assume !(1 == ~n); 1331#L13 call #t~ret7 := fibo(~n - 1);< 1342#fiboENTRY ~n := #in~n; 1346#L8 assume !(~n < 1); 1344#L10 assume !(1 == ~n); 1331#L13 call #t~ret7 := fibo(~n - 1);< 1342#fiboENTRY ~n := #in~n; 1346#L8 assume !(~n < 1); 1344#L10 assume !(1 == ~n); 1331#L13 call #t~ret7 := fibo(~n - 1);< 1342#fiboENTRY ~n := #in~n; 1346#L8 assume !(~n < 1); 1344#L10 assume 1 == ~n;#res := 1; 1283#fiboFINAL assume true; 1330#fiboEXIT >#33#return; 1251#L13-1 call #t~ret8 := fibo(~n - 2);< 1252#fiboENTRY ~n := #in~n; 1267#L8 assume ~n < 1;#res := 0; 1309#fiboFINAL assume true; 1348#fiboEXIT >#35#return; 1337#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1345#fiboFINAL assume true; 1340#fiboEXIT >#33#return; 1332#L13-1 call #t~ret8 := fibo(~n - 2);< 1342#fiboENTRY ~n := #in~n; 1346#L8 assume !(~n < 1); 1344#L10 assume !(1 == ~n); 1331#L13 call #t~ret7 := fibo(~n - 1);< 1342#fiboENTRY ~n := #in~n; 1346#L8 assume !(~n < 1); 1344#L10 assume 1 == ~n;#res := 1; 1283#fiboFINAL assume true; 1330#fiboEXIT >#33#return; 1251#L13-1 call #t~ret8 := fibo(~n - 2);< 1252#fiboENTRY ~n := #in~n; 1267#L8 assume ~n < 1;#res := 0; 1309#fiboFINAL assume true; 1348#fiboEXIT >#35#return; 1337#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1345#fiboFINAL assume true; 1340#fiboEXIT >#35#return; 1335#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1343#fiboFINAL assume true; 1338#fiboEXIT >#33#return; 1332#L13-1 [2021-10-28 09:46:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 2 times [2021-10-28 09:46:51,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:51,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623004951] [2021-10-28 09:46:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:51,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 09:46:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 09:46:51,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:51,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623004951] [2021-10-28 09:46:51,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623004951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:51,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012222463] [2021-10-28 09:46:51,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:46:51,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:51,449 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:51,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:46:51,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:46:51,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:46:51,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:46:51,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 09:46:51,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012222463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:51,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:51,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-10-28 09:46:51,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587699131] [2021-10-28 09:46:51,688 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:46:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash 564146419, now seen corresponding path program 2 times [2021-10-28 09:46:51,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:51,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708421345] [2021-10-28 09:46:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:51,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:46:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:46:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 31 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-28 09:46:51,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:51,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708421345] [2021-10-28 09:46:51,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708421345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:51,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922653964] [2021-10-28 09:46:51,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:46:51,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:51,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:51,849 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:51,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:46:51,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:46:51,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:46:51,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:46:51,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 38 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-28 09:46:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922653964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:52,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:52,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-10-28 09:46:52,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306266675] [2021-10-28 09:46:52,145 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:46:52,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:46:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:46:52,147 INFO L87 Difference]: Start difference. First operand 114 states and 156 transitions. cyclomatic complexity: 48 Second operand has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 09:46:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:52,423 INFO L93 Difference]: Finished difference Result 128 states and 172 transitions. [2021-10-28 09:46:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:46:52,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 172 transitions. [2021-10-28 09:46:52,427 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-10-28 09:46:52,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 126 states and 170 transitions. [2021-10-28 09:46:52,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-10-28 09:46:52,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-10-28 09:46:52,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 170 transitions. [2021-10-28 09:46:52,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:52,434 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 170 transitions. [2021-10-28 09:46:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 170 transitions. [2021-10-28 09:46:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-28 09:46:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 84 states have internal predecessors, (93), 29 states have call successors, (30), 15 states have call predecessors, (30), 19 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2021-10-28 09:46:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 170 transitions. [2021-10-28 09:46:52,450 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 170 transitions. [2021-10-28 09:46:52,450 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 170 transitions. [2021-10-28 09:46:52,450 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:46:52,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 170 transitions. [2021-10-28 09:46:52,452 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-10-28 09:46:52,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:52,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:52,454 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:52,455 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:46:52,455 INFO L791 eck$LassoCheckResult]: Stem: 1880#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1881#L-1 havoc main_#res;havoc main_#t~ret9, main_~x~0, main_~result~0;main_~x~0 := 7; 1896#L27 call main_#t~ret9 := fibo(main_~x~0);< 1897#fiboENTRY ~n := #in~n; 1952#L8 assume !(~n < 1); 1920#L10 assume !(1 == ~n); 1894#L13 call #t~ret7 := fibo(~n - 1);< 1903#fiboENTRY ~n := #in~n; 1904#L8 assume !(~n < 1); 1912#L10 assume !(1 == ~n); 1893#L13 call #t~ret7 := fibo(~n - 1);< 1895#fiboENTRY ~n := #in~n; 1951#L8 assume !(~n < 1); 1950#L10 assume !(1 == ~n); 1883#L13 call #t~ret7 := fibo(~n - 1);< 1943#fiboENTRY ~n := #in~n; 1949#L8 assume !(~n < 1); 1948#L10 assume !(1 == ~n); 1884#L13 call #t~ret7 := fibo(~n - 1);< 1943#fiboENTRY ~n := #in~n; 1949#L8 assume !(~n < 1); 1948#L10 assume !(1 == ~n); 1884#L13 call #t~ret7 := fibo(~n - 1);< 1943#fiboENTRY ~n := #in~n; 1947#L8 assume !(~n < 1); 1946#L10 assume 1 == ~n;#res := 1; 1944#fiboFINAL assume true; 1942#fiboEXIT >#33#return; 1906#L13-1 call #t~ret8 := fibo(~n - 2);< 1938#fiboENTRY ~n := #in~n; 2005#L8 assume ~n < 1;#res := 0; 2003#fiboFINAL assume true; 1905#fiboEXIT >#35#return; 1882#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1885#fiboFINAL assume true; 1898#fiboEXIT >#33#return; 1914#L13-1 [2021-10-28 09:46:52,455 INFO L793 eck$LassoCheckResult]: Loop: 1914#L13-1 call #t~ret8 := fibo(~n - 2);< 1984#fiboENTRY ~n := #in~n; 2004#L8 assume !(~n < 1); 1913#L10 assume !(1 == ~n); 1915#L13 call #t~ret7 := fibo(~n - 1);< 1984#fiboENTRY ~n := #in~n; 2004#L8 assume !(~n < 1); 1913#L10 assume !(1 == ~n); 1915#L13 call #t~ret7 := fibo(~n - 1);< 1984#fiboENTRY ~n := #in~n; 2004#L8 assume !(~n < 1); 1913#L10 assume 1 == ~n;#res := 1; 1919#fiboFINAL assume true; 1990#fiboEXIT >#33#return; 1890#L13-1 call #t~ret8 := fibo(~n - 2);< 1892#fiboENTRY ~n := #in~n; 1993#L8 assume ~n < 1;#res := 0; 1994#fiboFINAL assume true; 1989#fiboEXIT >#35#return; 1975#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1987#fiboFINAL assume true; 1978#fiboEXIT >#33#return; 1914#L13-1 [2021-10-28 09:46:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1885019301, now seen corresponding path program 3 times [2021-10-28 09:46:52,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:52,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103565258] [2021-10-28 09:46:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:52,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 09:46:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 09:46:52,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:52,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103565258] [2021-10-28 09:46:52,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103565258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:52,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62829013] [2021-10-28 09:46:52,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:46:52,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:52,659 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:52,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 09:46:52,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-28 09:46:52,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:46:52,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:46:52,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 5 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:46:53,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62829013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:53,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:53,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 16 [2021-10-28 09:46:53,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022944255] [2021-10-28 09:46:53,025 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:46:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash 780094678, now seen corresponding path program 3 times [2021-10-28 09:46:53,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:53,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432559476] [2021-10-28 09:46:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:53,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:53,034 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:46:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:46:53,053 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:46:53,420 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:46:53,420 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:46:53,420 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:46:53,420 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:46:53,420 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:46:53,420 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:53,420 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:46:53,420 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:46:53,421 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration6_Loop [2021-10-28 09:46:53,421 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:46:53,421 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:46:53,422 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 09:46:53,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:46:53,438 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 09:46:53,441 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 09:46:53,510 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:46:53,510 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:46:53,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:53,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:53,517 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:53,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:46:53,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:53,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:53,537 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:46:53,537 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:46:53,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:53,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:53,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:53,565 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:53,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:46:53,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:46:53,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:53,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 09:46:53,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:53,607 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:53,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:46:53,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:46:53,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:46:55,091 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:46:55,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-28 09:46:55,095 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:46:55,095 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:46:55,095 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:46:55,095 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:46:55,095 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:46:55,095 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:55,095 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:46:55,095 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:46:55,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration6_Loop [2021-10-28 09:46:55,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:46:55,095 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:46:55,096 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 09:46:55,115 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 09:46:55,127 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 09:46:55,130 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 09:46:55,200 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:46:55,201 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:46:55,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:55,202 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:55,210 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 09:46:55,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:55,221 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:55,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:55,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:55,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:55,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:55,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:55,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:46:55,237 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:46:55,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-28 09:46:55,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:55,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:55,271 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:55,272 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 09:46:55,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:46:55,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:46:55,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:46:55,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:46:55,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:46:55,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:46:55,283 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:46:55,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:46:55,304 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:46:55,312 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:46:55,313 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:46:55,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:46:55,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:55,314 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:46:55,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:46:55,315 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:46:55,315 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:46:55,315 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:46:55,316 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2021-10-28 09:46:55,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:55,338 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:46:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:55,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:46:55,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:55,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:46:55,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:46:56,308 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-28 09:46:56,309 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 126 states and 170 transitions. cyclomatic complexity: 50 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:46:56,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:56,596 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 126 states and 170 transitions. cyclomatic complexity: 50. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 259 states and 358 transitions. Complement of second has 45 states. [2021-10-28 09:46:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 09:46:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:46:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 41 transitions. [2021-10-28 09:46:56,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 36 letters. Loop has 22 letters. [2021-10-28 09:46:56,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:56,600 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:46:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:56,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:46:56,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:57,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:46:57,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:46:57,412 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2021-10-28 09:46:57,412 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 126 states and 170 transitions. cyclomatic complexity: 50 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:46:57,611 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 126 states and 170 transitions. cyclomatic complexity: 50. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 320 states and 431 transitions. Complement of second has 25 states. [2021-10-28 09:46:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-28 09:46:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:46:57,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2021-10-28 09:46:57,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 36 letters. Loop has 22 letters. [2021-10-28 09:46:57,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:57,616 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:46:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:57,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:46:57,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:46:58,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:46:58,469 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 7 loop predicates [2021-10-28 09:46:58,470 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 126 states and 170 transitions. cyclomatic complexity: 50 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:46:58,801 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 126 states and 170 transitions. cyclomatic complexity: 50. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1146 states and 1598 transitions. Complement of second has 138 states. [2021-10-28 09:46:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 09:46:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:46:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 46 transitions. [2021-10-28 09:46:58,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 36 letters. Loop has 22 letters. [2021-10-28 09:46:58,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:58,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 58 letters. Loop has 22 letters. [2021-10-28 09:46:58,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:58,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 36 letters. Loop has 44 letters. [2021-10-28 09:46:58,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:46:58,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1146 states and 1598 transitions. [2021-10-28 09:46:58,835 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 58 [2021-10-28 09:46:58,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1146 states to 652 states and 989 transitions. [2021-10-28 09:46:58,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 262 [2021-10-28 09:46:58,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 292 [2021-10-28 09:46:58,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 652 states and 989 transitions. [2021-10-28 09:46:58,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:58,862 INFO L681 BuchiCegarLoop]: Abstraction has 652 states and 989 transitions. [2021-10-28 09:46:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states and 989 transitions. [2021-10-28 09:46:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 486. [2021-10-28 09:46:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 296 states have (on average 1.1993243243243243) internal successors, (355), 317 states have internal predecessors, (355), 112 states have call successors, (126), 58 states have call predecessors, (126), 78 states have return successors, (217), 110 states have call predecessors, (217), 108 states have call successors, (217) [2021-10-28 09:46:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 698 transitions. [2021-10-28 09:46:58,947 INFO L704 BuchiCegarLoop]: Abstraction has 486 states and 698 transitions. [2021-10-28 09:46:58,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:46:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:46:58,948 INFO L87 Difference]: Start difference. First operand 486 states and 698 transitions. Second operand has 17 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 8 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 09:46:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:59,249 INFO L93 Difference]: Finished difference Result 299 states and 382 transitions. [2021-10-28 09:46:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:46:59,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 299 states and 382 transitions. [2021-10-28 09:46:59,256 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:46:59,263 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 299 states to 270 states and 348 transitions. [2021-10-28 09:46:59,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-28 09:46:59,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 137 [2021-10-28 09:46:59,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 348 transitions. [2021-10-28 09:46:59,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:46:59,265 INFO L681 BuchiCegarLoop]: Abstraction has 270 states and 348 transitions. [2021-10-28 09:46:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 348 transitions. [2021-10-28 09:46:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-10-28 09:46:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 144 states have (on average 1.1180555555555556) internal successors, (161), 154 states have internal predecessors, (161), 54 states have call successors, (58), 30 states have call predecessors, (58), 37 states have return successors, (85), 50 states have call predecessors, (85), 48 states have call successors, (85) [2021-10-28 09:46:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 304 transitions. [2021-10-28 09:46:59,287 INFO L704 BuchiCegarLoop]: Abstraction has 235 states and 304 transitions. [2021-10-28 09:46:59,287 INFO L587 BuchiCegarLoop]: Abstraction has 235 states and 304 transitions. [2021-10-28 09:46:59,287 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:46:59,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 304 transitions. [2021-10-28 09:46:59,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:46:59,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:46:59,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:46:59,295 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:59,295 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:46:59,297 INFO L791 eck$LassoCheckResult]: Stem: 5474#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5475#L-1 havoc main_#res;havoc main_#t~ret9, main_~x~0, main_~result~0;main_~x~0 := 7; 5491#L27 call main_#t~ret9 := fibo(main_~x~0);< 5492#fiboENTRY ~n := #in~n; 5545#L8 assume !(~n < 1); 5544#L10 assume !(1 == ~n); 5540#L13 call #t~ret7 := fibo(~n - 1);< 5543#fiboENTRY ~n := #in~n; 5542#L8 assume !(~n < 1); 5541#L10 assume !(1 == ~n); 5536#L13 call #t~ret7 := fibo(~n - 1);< 5539#fiboENTRY ~n := #in~n; 5538#L8 assume !(~n < 1); 5537#L10 assume !(1 == ~n); 5531#L13 call #t~ret7 := fibo(~n - 1);< 5535#fiboENTRY ~n := #in~n; 5533#L8 assume !(~n < 1); 5534#L10 assume !(1 == ~n); 5528#L13 call #t~ret7 := fibo(~n - 1);< 5526#fiboENTRY ~n := #in~n; 5530#L8 assume !(~n < 1); 5532#L10 assume !(1 == ~n); 5527#L13 call #t~ret7 := fibo(~n - 1);< 5526#fiboENTRY ~n := #in~n; 5530#L8 assume !(~n < 1); 5532#L10 assume !(1 == ~n); 5527#L13 call #t~ret7 := fibo(~n - 1);< 5526#fiboENTRY ~n := #in~n; 5529#L8 assume !(~n < 1); 5697#L10 assume 1 == ~n;#res := 1; 5696#fiboFINAL assume true; 5693#fiboEXIT >#33#return; 5508#L13-1 call #t~ret8 := fibo(~n - 2);< 5690#fiboENTRY ~n := #in~n; 5507#L8 assume ~n < 1;#res := 0; 5509#fiboFINAL assume true; 5688#fiboEXIT >#35#return; 5687#L13-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5682#fiboFINAL assume true; 5603#fiboEXIT >#33#return; 5590#L13-1 call #t~ret8 := fibo(~n - 2);< 5600#fiboENTRY ~n := #in~n; 5640#L8 assume !(~n < 1); 5608#L10 assume !(1 == ~n); 5521#L13 call #t~ret7 := fibo(~n - 1);< 5478#fiboENTRY ~n := #in~n; 5520#L8 assume !(~n < 1); 5523#L10 assume !(1 == ~n); 5550#L13 call #t~ret7 := fibo(~n - 1);< 5552#fiboENTRY [2021-10-28 09:46:59,298 INFO L793 eck$LassoCheckResult]: Loop: 5552#fiboENTRY ~n := #in~n; 5570#L8 assume !(~n < 1); 5569#L10 assume !(1 == ~n); 5551#L13 call #t~ret7 := fibo(~n - 1);< 5552#fiboENTRY [2021-10-28 09:46:59,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1767901880, now seen corresponding path program 4 times [2021-10-28 09:46:59,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:59,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537038509] [2021-10-28 09:46:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:59,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 09:46:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:46:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:46:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 102 proven. 45 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 09:46:59,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:59,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537038509] [2021-10-28 09:46:59,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537038509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:59,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740576018] [2021-10-28 09:46:59,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:46:59,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:59,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:59,542 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:59,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 09:46:59,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:46:59,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:46:59,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:46:59,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 103 proven. 45 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 09:47:00,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740576018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:00,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:47:00,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 18 [2021-10-28 09:47:00,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150489855] [2021-10-28 09:47:00,156 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:47:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:00,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2021-10-28 09:47:00,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:00,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454048345] [2021-10-28 09:47:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:00,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:47:00,165 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:47:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:47:00,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:47:00,217 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:47:00,218 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:47:00,218 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:47:00,218 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:47:00,218 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:47:00,218 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,218 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:47:00,219 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:47:00,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration7_Loop [2021-10-28 09:47:00,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:47:00,219 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:47:00,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:47:00,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:47:00,228 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 09:47:00,230 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 09:47:00,238 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 09:47:00,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:47:00,280 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:47:00,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,281 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:47:00,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:47:00,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:47:00,294 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:47:00,294 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:47:00,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,322 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:47:00,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:47:00,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:47:00,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:47:00,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret7=0} Honda state: {fibo_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:47:00,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,406 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:47:00,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:47:00,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:47:00,434 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:47:00,434 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:47:00,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-28 09:47:00,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,465 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:47:00,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:47:00,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:47:00,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,502 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:47:00,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:47:00,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:47:00,550 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:47:00,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,554 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:47:00,554 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:47:00,554 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:47:00,554 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:47:00,554 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:47:00,554 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,554 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:47:00,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:47:00,554 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration7_Loop [2021-10-28 09:47:00,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:47:00,554 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:47:00,555 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 09:47:00,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:47:00,559 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 09:47:00,561 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 09:47:00,563 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 09:47:00,615 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:47:00,615 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:47:00,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,617 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,634 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 09:47:00,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:47:00,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:47:00,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:47:00,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:47:00,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:47:00,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:47:00,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:47:00,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:47:00,660 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:47:00,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,708 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,710 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 09:47:00,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:47:00,722 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:47:00,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:47:00,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:47:00,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:47:00,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:47:00,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:47:00,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:47:00,745 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:47:00,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,791 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,798 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 09:47:00,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:47:00,810 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:47:00,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:47:00,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:47:00,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:47:00,811 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:47:00,811 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:47:00,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:47:00,825 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:47:00,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,871 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,873 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 09:47:00,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:47:00,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:47:00,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:47:00,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:47:00,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:47:00,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:47:00,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:47:00,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:47:00,897 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:47:00,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:00,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,944 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,950 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 09:47:00,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:47:00,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:47:00,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:47:00,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:47:00,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:47:00,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:47:00,967 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:47:00,967 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:47:00,979 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:47:00,981 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:47:00,981 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:47:00,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:47:00,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:00,983 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:00,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 09:47:00,984 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:47:00,984 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:47:00,984 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:47:00,984 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2021-10-28 09:47:01,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:01,009 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:47:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:01,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 09:47:01,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:01,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:47:01,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:01,609 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 09:47:01,612 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-28 09:47:01,612 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 235 states and 304 transitions. cyclomatic complexity: 73 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:47:01,678 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 235 states and 304 transitions. cyclomatic complexity: 73. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 251 states and 320 transitions. Complement of second has 13 states. [2021-10-28 09:47:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:47:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:47:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-10-28 09:47:01,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 49 letters. Loop has 4 letters. [2021-10-28 09:47:01,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:47:01,681 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:47:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:01,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 09:47:01,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:02,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:02,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:47:02,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:02,304 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 09:47:02,306 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-28 09:47:02,306 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 235 states and 304 transitions. cyclomatic complexity: 73 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:47:02,373 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 235 states and 304 transitions. cyclomatic complexity: 73. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 251 states and 320 transitions. Complement of second has 13 states. [2021-10-28 09:47:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:47:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:47:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-10-28 09:47:02,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 49 letters. Loop has 4 letters. [2021-10-28 09:47:02,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:47:02,376 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:47:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:02,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 09:47:02,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:02,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:47:02,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:02,935 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 09:47:02,936 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 3 loop predicates [2021-10-28 09:47:02,936 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 235 states and 304 transitions. cyclomatic complexity: 73 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:47:03,020 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 235 states and 304 transitions. cyclomatic complexity: 73. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 312 states and 383 transitions. Complement of second has 14 states. [2021-10-28 09:47:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:47:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:47:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-28 09:47:03,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2021-10-28 09:47:03,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:47:03,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 53 letters. Loop has 4 letters. [2021-10-28 09:47:03,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:47:03,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 8 letters. [2021-10-28 09:47:03,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:47:03,027 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 312 states and 383 transitions. [2021-10-28 09:47:03,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:47:03,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 312 states to 249 states and 319 transitions. [2021-10-28 09:47:03,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-28 09:47:03,039 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-10-28 09:47:03,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 249 states and 319 transitions. [2021-10-28 09:47:03,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:47:03,039 INFO L681 BuchiCegarLoop]: Abstraction has 249 states and 319 transitions. [2021-10-28 09:47:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states and 319 transitions. [2021-10-28 09:47:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2021-10-28 09:47:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.111842105263158) internal successors, (169), 162 states have internal predecessors, (169), 54 states have call successors, (58), 30 states have call predecessors, (58), 37 states have return successors, (85), 50 states have call predecessors, (85), 48 states have call successors, (85) [2021-10-28 09:47:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 312 transitions. [2021-10-28 09:47:03,057 INFO L704 BuchiCegarLoop]: Abstraction has 243 states and 312 transitions. [2021-10-28 09:47:03,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:47:03,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:47:03,058 INFO L87 Difference]: Start difference. First operand 243 states and 312 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 11 states have internal predecessors, (34), 9 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:47:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:03,348 INFO L93 Difference]: Finished difference Result 257 states and 308 transitions. [2021-10-28 09:47:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:47:03,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 257 states and 308 transitions. [2021-10-28 09:47:03,353 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:47:03,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 257 states to 0 states and 0 transitions. [2021-10-28 09:47:03,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:47:03,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:47:03,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:47:03,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:47:03,354 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:47:03,354 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:47:03,354 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:47:03,354 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:47:03,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:47:03,355 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:47:03,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:47:03,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:47:03 BoogieIcfgContainer [2021-10-28 09:47:03,362 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:47:03,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:47:03,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:47:03,363 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:47:03,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:46:44" (3/4) ... [2021-10-28 09:47:03,367 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:47:03,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:47:03,368 INFO L168 Benchmark]: Toolchain (without parser) took 19864.20 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 109.1 MB in the beginning and 63.4 MB in the end (delta: 45.7 MB). Peak memory consumption was 110.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:03,369 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:47:03,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.20 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 116.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:03,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 140.5 MB. Free memory was 116.9 MB in the beginning and 115.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:47:03,370 INFO L168 Benchmark]: Boogie Preprocessor took 21.61 ms. Allocated memory is still 140.5 MB. Free memory was 115.6 MB in the beginning and 114.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:03,371 INFO L168 Benchmark]: RCFGBuilder took 350.39 ms. Allocated memory is still 140.5 MB. Free memory was 114.5 MB in the beginning and 105.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:03,371 INFO L168 Benchmark]: BuchiAutomizer took 19079.44 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 105.2 MB in the beginning and 64.5 MB in the end (delta: 40.7 MB). Peak memory consumption was 106.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:03,372 INFO L168 Benchmark]: Witness Printer took 4.52 ms. Allocated memory is still 205.5 MB. Free memory was 64.5 MB in the beginning and 63.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:47:03,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.20 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 116.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 140.5 MB. Free memory was 116.9 MB in the beginning and 115.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.61 ms. Allocated memory is still 140.5 MB. Free memory was 115.6 MB in the beginning and 114.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 350.39 ms. Allocated memory is still 140.5 MB. Free memory was 114.5 MB in the beginning and 105.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 19079.44 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 105.2 MB in the beginning and 64.5 MB in the end (delta: 40.7 MB). Peak memory consumption was 106.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.52 ms. Allocated memory is still 205.5 MB. Free memory was 64.5 MB in the beginning and 63.4 MB in the end (delta: 1.0 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 10 terminating modules (6 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 6 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.9s and 8 iterations. TraceHistogramMax:10. Analysis of lassos took 10.5s. Construction of modules took 1.0s. Büchi inclusion checks took 6.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 238 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 235 states and ocurred in iteration 6. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 195 SDtfs, 456 SDslu, 341 SDs, 0 SdLazy, 1217 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf96 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq181 hnf93 smp75 dnf100 smp100 tf110 neg96 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 56ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:47:03,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:03,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:03,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:04,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:04,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 09:47:04,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-28 09:47:04,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-28 09:47:04,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc888232-7d3c-455b-b7dd-d51fb10674b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...