./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ --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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:26:15,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:26:15,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:26:15,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:26:15,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:26:15,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:26:15,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:26:15,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:26:15,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:26:15,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:26:15,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:26:15,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:26:15,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:26:15,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:26:15,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:26:15,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:26:15,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:26:15,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:26:15,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:26:15,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:26:15,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:26:15,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:26:15,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:26:15,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:26:15,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:26:15,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:26:15,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:26:15,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:26:15,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:26:15,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:26:15,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:26:15,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:26:15,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:26:15,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:26:15,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:26:15,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:26:15,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:26:15,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:26:15,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:26:15,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:26:15,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:26:15,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-10-17 10:26:15,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:26:15,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:26:15,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:26:15,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:26:15,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:26:15,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:26:15,921 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:26:15,921 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:26:15,922 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:26:15,922 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:26:15,923 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:26:15,923 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:26:15,923 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:26:15,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:26:15,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:26:15,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:26:15,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:26:15,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:26:15,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:26:15,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:26:15,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:26:15,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:26:15,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:26:15,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:26:15,927 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:26:15,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:26:15,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:26:15,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:26:15,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:26:15,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:26:15,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:26:15,930 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:26:15,930 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_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2022-10-17 10:26:16,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:26:16,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:26:16,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:26:16,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:26:16,261 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:26:16,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-10-17 10:26:16,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/data/710c7c975/579c8edea36b43a8a7fb56edec66f5e8/FLAGa3e73fd8c [2022-10-17 10:26:16,808 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:26:16,809 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-10-17 10:26:16,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/data/710c7c975/579c8edea36b43a8a7fb56edec66f5e8/FLAGa3e73fd8c [2022-10-17 10:26:17,160 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/data/710c7c975/579c8edea36b43a8a7fb56edec66f5e8 [2022-10-17 10:26:17,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:26:17,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:26:17,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:26:17,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:26:17,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:26:17,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55fd3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17, skipping insertion in model container [2022-10-17 10:26:17,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:26:17,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:26:17,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-10-17 10:26:17,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:26:17,410 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:26:17,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-10-17 10:26:17,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:26:17,442 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:26:17,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17 WrapperNode [2022-10-17 10:26:17,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:26:17,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:26:17,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:26:17,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:26:17,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,480 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-10-17 10:26:17,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:26:17,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:26:17,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:26:17,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:26:17,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,511 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:26:17,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:26:17,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:26:17,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:26:17,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (1/1) ... [2022-10-17 10:26:17,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:17,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:17,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:17,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:26:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:26:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:26:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-17 10:26:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-17 10:26:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-17 10:26:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-17 10:26:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:26:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:26:17,677 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:26:17,679 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:26:17,793 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:26:17,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:26:17,800 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:26:17,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:17 BoogieIcfgContainer [2022-10-17 10:26:17,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:26:17,803 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:26:17,804 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:26:17,808 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:26:17,809 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:26:17,809 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:26:17" (1/3) ... [2022-10-17 10:26:17,810 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@335586e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:26:17, skipping insertion in model container [2022-10-17 10:26:17,811 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:26:17,811 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:17" (2/3) ... [2022-10-17 10:26:17,811 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@335586e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:26:17, skipping insertion in model container [2022-10-17 10:26:17,811 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:26:17,812 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:17" (3/3) ... [2022-10-17 10:26:17,813 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2022-10-17 10:26:17,906 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:26:17,906 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:26:17,907 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:26:17,907 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:26:17,907 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:26:17,907 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:26:17,907 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:26:17,907 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:26:17,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:26:17,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-10-17 10:26:17,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:17,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:17,985 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:26:17,985 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:17,985 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:26:17,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:26:17,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-10-17 10:26:17,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:17,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:17,991 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:26:17,991 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:17,997 INFO L748 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-10-17 10:26:17,997 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-10-17 10:26:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-10-17 10:26:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819290722] [2022-10-17 10:26:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:18,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:18,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-10-17 10:26:18,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:18,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655330242] [2022-10-17 10:26:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:18,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:18,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-10-17 10:26:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:18,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41474733] [2022-10-17 10:26:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:18,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:18,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:18,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:18,476 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:18,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:18,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:18,477 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:18,477 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:26:18,477 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:18,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:18,478 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2022-10-17 10:26:18,478 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:18,478 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:18,500 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,512 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,517 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,522 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,527 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,531 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,536 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,540 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:18,641 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:18,642 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:26:18,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:18,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:18,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:26:18,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:18,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:18,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:18,673 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:18,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-10-17 10:26:18,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:18,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:18,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:26:18,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:18,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:18,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:18,742 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:18,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:18,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:18,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:18,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:26:18,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:18,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:18,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:18,815 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:18,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:18,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:18,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:18,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:26:18,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:18,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:18,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:18,864 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:18,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:18,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:18,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:18,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:26:18,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:18,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:18,909 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:18,909 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:18,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:18,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:18,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:18,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 10:26:18,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:18,944 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:18,952 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:18,953 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:18,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:18,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:18,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:18,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:18,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-10-17 10:26:18,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:18,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:19,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:19,003 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:19,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,028 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-10-17 10:26:19,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:19,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:19,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-10-17 10:26:19,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:26:19,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:19,133 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:26:19,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,136 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:19,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:19,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:19,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:19,136 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:26:19,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:19,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:19,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2022-10-17 10:26:19,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:19,137 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:19,138 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,142 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,155 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,159 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,164 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,168 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,182 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:19,239 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:19,244 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:26:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,247 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,257 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 [2022-10-17 10:26:19,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:19,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:19,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:19,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:19,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:19,271 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:19,272 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:19,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 10:26:19,283 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:19,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,323 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,329 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 [2022-10-17 10:26:19,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:19,339 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:19,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:19,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:19,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:19,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:19,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:19,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 10:26:19,347 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:19,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,386 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 [2022-10-17 10:26:19,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-10-17 10:26:19,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:19,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:19,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:19,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:19,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:19,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:19,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:19,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:19,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,423 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,428 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 [2022-10-17 10:26:19,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 10:26:19,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:19,435 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:19,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:19,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:19,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:19,437 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:19,437 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:19,448 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:19,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,487 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,495 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 [2022-10-17 10:26:19,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:19,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:19,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:19,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:19,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:19,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:19,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:19,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 10:26:19,518 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:19,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,557 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,560 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 [2022-10-17 10:26:19,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 10:26:19,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:19,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:19,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:19,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:19,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:19,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:19,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:19,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:26:19,603 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:26:19,603 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:26:19,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:19,606 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:19,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-10-17 10:26:19,623 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:26:19,624 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:26:19,624 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:26:19,624 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-10-17 10:26:19,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:19,647 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:26:19,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:19,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:26:19,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:19,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:26:19,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:19,897 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-10-17 10:26:19,900 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:26:20,118 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-10-17 10:26:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-10-17 10:26:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:26:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-10-17 10:26:20,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-10-17 10:26:20,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:20,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-10-17 10:26:20,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:20,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-10-17 10:26:20,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:20,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-10-17 10:26:20,163 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-10-17 10:26:20,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-10-17 10:26:20,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-10-17 10:26:20,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-10-17 10:26:20,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-10-17 10:26:20,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:20,191 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-10-17 10:26:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-10-17 10:26:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-10-17 10:26:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-10-17 10:26:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-10-17 10:26:20,236 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-10-17 10:26:20,236 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-10-17 10:26:20,236 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:26:20,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-10-17 10:26:20,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-10-17 10:26:20,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:20,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:20,243 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:20,243 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:20,243 INFO L748 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-10-17 10:26:20,244 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-10-17 10:26:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-10-17 10:26:20,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:20,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888442682] [2022-10-17 10:26:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:20,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:26:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:26:20,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:20,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888442682] [2022-10-17 10:26:20,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888442682] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:26:20,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:26:20,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:26:20,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852213670] [2022-10-17 10:26:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:26:20,515 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:26:20,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-10-17 10:26:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:20,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245395066] [2022-10-17 10:26:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:20,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:20,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:26:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:26:20,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245395066] [2022-10-17 10:26:20,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245395066] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:26:20,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:26:20,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:26:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527773212] [2022-10-17 10:26:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:26:20,693 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:26:20,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:26:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:26:20,699 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:26:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:20,799 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-10-17 10:26:20,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-10-17 10:26:20,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-10-17 10:26:20,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-10-17 10:26:20,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-10-17 10:26:20,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-10-17 10:26:20,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-10-17 10:26:20,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:20,806 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-10-17 10:26:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-10-17 10:26:20,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-10-17 10:26:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-10-17 10:26:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-10-17 10:26:20,814 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-10-17 10:26:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:26:20,816 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-10-17 10:26:20,816 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:26:20,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-10-17 10:26:20,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-10-17 10:26:20,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:20,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:20,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:20,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:20,819 INFO L748 eck$LassoCheckResult]: Stem: 340#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 341#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-10-17 10:26:20,819 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-10-17 10:26:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-10-17 10:26:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:20,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732220912] [2022-10-17 10:26:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:20,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:26:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:20,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732220912] [2022-10-17 10:26:20,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732220912] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:20,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520630034] [2022-10-17 10:26:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:20,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:20,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:20,932 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:20,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-17 10:26:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:20,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:26:20,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:21,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:21,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520630034] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:21,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:21,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-10-17 10:26:21,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736485678] [2022-10-17 10:26:21,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:21,222 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:26:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:21,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-10-17 10:26:21,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:21,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361616419] [2022-10-17 10:26:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:21,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:21,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:21,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:21,442 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:21,442 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:21,442 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:21,442 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:21,442 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:26:21,442 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:21,442 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:21,443 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:21,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2022-10-17 10:26:21,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:21,443 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:21,444 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,447 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,449 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,451 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,454 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,461 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,464 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,466 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:21,515 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:21,516 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:26:21,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:21,519 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:21,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:21,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:21,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-10-17 10:26:21,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:21,551 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:21,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:21,589 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:21,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:21,600 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:21,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-10-17 10:26:21,631 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:21,631 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:21,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:21,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:21,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:21,665 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:21,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-10-17 10:26:21,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:21,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:21,675 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:21,675 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:21,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:21,696 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:21,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-10-17 10:26:21,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:21,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:21,709 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:21,709 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:21,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:21,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:21,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:21,730 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:21,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-10-17 10:26:21,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:21,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:21,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-10-17 10:26:21,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:21,790 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:21,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-10-17 10:26:21,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:26:21,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:23,018 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:26:23,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:23,022 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:23,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:23,022 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:23,022 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:23,022 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:26:23,022 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:23,022 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:23,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:23,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2022-10-17 10:26:23,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:23,022 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:23,024 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,027 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,033 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,035 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,046 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,048 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,050 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,064 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:23,128 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:23,128 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:26:23,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:23,130 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:23,136 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 [2022-10-17 10:26:23,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:23,145 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:23,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:23,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:23,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:23,147 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:23,147 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:23,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-10-17 10:26:23,159 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:23,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-10-17 10:26:23,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:23,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:23,185 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:23,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-10-17 10:26:23,186 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 [2022-10-17 10:26:23,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:23,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:23,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:23,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:23,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:23,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:23,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:23,200 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:23,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-10-17 10:26:23,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:23,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:23,221 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:23,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-10-17 10:26:23,222 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 [2022-10-17 10:26:23,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:23,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:23,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:23,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:23,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:23,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:23,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:23,254 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:23,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:23,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:23,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:23,292 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:23,294 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 [2022-10-17 10:26:23,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-10-17 10:26:23,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:23,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:23,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:23,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:23,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:23,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:23,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:23,323 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:26:23,331 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:26:23,331 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:26:23,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:23,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:23,371 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:23,374 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:26:23,374 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:26:23,374 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:26:23,374 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-10-17 10:26:23,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-10-17 10:26:23,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:23,414 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:26:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:26:23,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:23,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:26:23,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:23,755 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-10-17 10:26:23,755 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:26:24,200 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-10-17 10:26:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-10-17 10:26:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:26:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-10-17 10:26:24,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-10-17 10:26:24,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:24,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-10-17 10:26:24,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:24,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-10-17 10:26:24,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:24,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-10-17 10:26:24,214 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-10-17 10:26:24,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-10-17 10:26:24,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-10-17 10:26:24,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-10-17 10:26:24,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-10-17 10:26:24,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:24,229 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-10-17 10:26:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-10-17 10:26:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-10-17 10:26:24,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-10-17 10:26:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-10-17 10:26:24,271 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-10-17 10:26:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:26:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:26:24,274 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:26:24,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:24,574 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2022-10-17 10:26:24,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2022-10-17 10:26:24,580 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-10-17 10:26:24,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2022-10-17 10:26:24,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2022-10-17 10:26:24,587 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2022-10-17 10:26:24,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2022-10-17 10:26:24,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:24,588 INFO L218 hiAutomatonCegarLoop]: Abstraction has 204 states and 272 transitions. [2022-10-17 10:26:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2022-10-17 10:26:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2022-10-17 10:26:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2022-10-17 10:26:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2022-10-17 10:26:24,606 INFO L240 hiAutomatonCegarLoop]: Abstraction has 192 states and 257 transitions. [2022-10-17 10:26:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:26:24,607 INFO L428 stractBuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2022-10-17 10:26:24,608 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:26:24,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2022-10-17 10:26:24,610 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-10-17 10:26:24,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:24,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:24,615 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:24,615 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:24,615 INFO L748 eck$LassoCheckResult]: Stem: 1239#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1274#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1311#fibo1ENTRY ~n := #in~n; 1348#L10 assume !(~n < 1); 1347#L12 assume !(1 == ~n); 1257#L15 call #t~ret4 := fibo2(~n - 1);< 1346#fibo2ENTRY ~n := #in~n; 1345#L20 assume !(~n < 1); 1344#L22 assume !(1 == ~n); 1269#L25 call #t~ret6 := fibo1(~n - 1);< 1268#fibo1ENTRY ~n := #in~n; 1270#L10 assume !(~n < 1); 1290#L12 assume !(1 == ~n); 1291#L15 call #t~ret4 := fibo2(~n - 1);< 1297#fibo2ENTRY ~n := #in~n; 1424#L20 assume !(~n < 1); 1423#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1342#fibo1ENTRY ~n := #in~n; 1343#L10 assume !(~n < 1); 1353#L12 assume !(1 == ~n); 1354#L15 call #t~ret4 := fibo2(~n - 1);< 1362#fibo2ENTRY ~n := #in~n; 1366#L20 assume ~n < 1;#res := 0; 1365#fibo2FINAL assume true; 1361#fibo2EXIT >#50#return; 1358#L15-1 call #t~ret5 := fibo2(~n - 2);< 1359#fibo2ENTRY ~n := #in~n; 1363#L20 assume ~n < 1;#res := 0; 1360#fibo2FINAL assume true; 1357#fibo2EXIT >#52#return; 1355#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1356#fibo1FINAL assume true; 1422#fibo1EXIT >#46#return; 1329#L25-1 call #t~ret7 := fibo1(~n - 2);< 1341#fibo1ENTRY ~n := #in~n; 1374#L10 assume ~n < 1;#res := 0; 1429#fibo1FINAL assume true; 1420#fibo1EXIT >#48#return; 1418#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1417#fibo2FINAL assume true; 1414#fibo2EXIT >#50#return; 1242#L15-1 call #t~ret5 := fibo2(~n - 2);< 1296#fibo2ENTRY [2022-10-17 10:26:24,615 INFO L750 eck$LassoCheckResult]: Loop: 1296#fibo2ENTRY ~n := #in~n; 1427#L20 assume !(~n < 1); 1241#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1263#fibo1ENTRY ~n := #in~n; 1267#L10 assume !(~n < 1); 1288#L12 assume !(1 == ~n); 1243#L15 call #t~ret4 := fibo2(~n - 1);< 1296#fibo2ENTRY [2022-10-17 10:26:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:24,616 INFO L85 PathProgramCache]: Analyzing trace with hash -960039395, now seen corresponding path program 1 times [2022-10-17 10:26:24,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:24,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030188409] [2022-10-17 10:26:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:24,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:26:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:26:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:26:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:26:24,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:24,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030188409] [2022-10-17 10:26:24,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030188409] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:24,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439578351] [2022-10-17 10:26:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:24,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:24,778 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-17 10:26:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:24,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:26:24,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:26:25,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:26:25,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439578351] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:25,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:25,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2022-10-17 10:26:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307685995] [2022-10-17 10:26:25,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:25,558 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:26:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-10-17 10:26:25,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:25,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867796525] [2022-10-17 10:26:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:25,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:25,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:25,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:25,688 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:25,689 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:25,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:25,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:25,689 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:26:25,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:25,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:25,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:25,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2022-10-17 10:26:25,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:25,690 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:25,691 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,700 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,704 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,706 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,708 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,710 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,718 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:25,759 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:25,759 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:26:25,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:25,760 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:25,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:25,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:25,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-10-17 10:26:25,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:25,799 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:25,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:25,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:25,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:25,839 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:25,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:25,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:25,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-10-17 10:26:25,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:25,854 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:25,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:25,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:25,892 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:25,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:25,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:25,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-10-17 10:26:25,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:25,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:25,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:25,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:25,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:25,963 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:25,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:25,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:25,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-10-17 10:26:25,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:25,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:26,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,028 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:26,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:26,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-10-17 10:26:26,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:26,051 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:26,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,090 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:26,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:26,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-10-17 10:26:26,115 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:26,115 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:26,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,143 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-10-17 10:26:26,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:26,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:26,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,176 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-10-17 10:26:26,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:26:26,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:26,256 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:26:26,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,258 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:26,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:26,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:26,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:26,258 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:26:26,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,258 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:26,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:26,258 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2022-10-17 10:26:26,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:26,259 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:26,259 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,268 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,273 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,274 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,276 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,278 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,288 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:26,339 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:26,339 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:26:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,340 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:26:26,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-10-17 10:26:26,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:26,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,404 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-10-17 10:26:26,410 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 [2022-10-17 10:26:26,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,432 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:26,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,460 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-10-17 10:26:26,464 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 [2022-10-17 10:26:26,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,471 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,471 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,472 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:26,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-10-17 10:26:26,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,493 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-10-17 10:26:26,495 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 [2022-10-17 10:26:26,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,526 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:26,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-10-17 10:26:26,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,547 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:26:26,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-10-17 10:26:26,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,556 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:26,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-10-17 10:26:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,584 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-10-17 10:26:26,586 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 [2022-10-17 10:26:26,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,592 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,593 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,593 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,594 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:26,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,615 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-10-17 10:26:26,616 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 [2022-10-17 10:26:26,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,641 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:26,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,662 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,665 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 [2022-10-17 10:26:26,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-10-17 10:26:26,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:26,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:26,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:26,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:26,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:26,672 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:26,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:26,676 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:26:26,677 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 10:26:26,677 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:26:26,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:26,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:26,679 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:26,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-10-17 10:26:26,679 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:26:26,680 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:26:26,680 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:26:26,680 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-10-17 10:26:26,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-10-17 10:26:26,702 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:26:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:26,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:26:26,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:27,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:27,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:26:27,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:27,239 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-10-17 10:26:27,239 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:26:27,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2022-10-17 10:26:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-10-17 10:26:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:26:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-10-17 10:26:27,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2022-10-17 10:26:27,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:27,452 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:27,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:26:27,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:27,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:26:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:27,946 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-10-17 10:26:27,946 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:26:28,128 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2022-10-17 10:26:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-10-17 10:26:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:26:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-10-17 10:26:28,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2022-10-17 10:26:28,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:28,134 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:28,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:28,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:26:28,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:28,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:26:28,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:28,565 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-10-17 10:26:28,565 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:26:28,743 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 587 states and 803 transitions. Complement of second has 25 states. [2022-10-17 10:26:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-10-17 10:26:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:26:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-10-17 10:26:28,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-10-17 10:26:28,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:28,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2022-10-17 10:26:28,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:28,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2022-10-17 10:26:28,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:28,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2022-10-17 10:26:28,759 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-10-17 10:26:28,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2022-10-17 10:26:28,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2022-10-17 10:26:28,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2022-10-17 10:26:28,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2022-10-17 10:26:28,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:28,782 INFO L218 hiAutomatonCegarLoop]: Abstraction has 476 states and 676 transitions. [2022-10-17 10:26:28,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2022-10-17 10:26:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2022-10-17 10:26:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2022-10-17 10:26:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2022-10-17 10:26:28,820 INFO L240 hiAutomatonCegarLoop]: Abstraction has 401 states and 544 transitions. [2022-10-17 10:26:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-17 10:26:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-10-17 10:26:28,822 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-10-17 10:26:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:29,453 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2022-10-17 10:26:29,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2022-10-17 10:26:29,463 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-10-17 10:26:29,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2022-10-17 10:26:29,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2022-10-17 10:26:29,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2022-10-17 10:26:29,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2022-10-17 10:26:29,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:29,474 INFO L218 hiAutomatonCegarLoop]: Abstraction has 457 states and 645 transitions. [2022-10-17 10:26:29,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2022-10-17 10:26:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2022-10-17 10:26:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2022-10-17 10:26:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2022-10-17 10:26:29,506 INFO L240 hiAutomatonCegarLoop]: Abstraction has 414 states and 573 transitions. [2022-10-17 10:26:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-17 10:26:29,509 INFO L428 stractBuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2022-10-17 10:26:29,509 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-10-17 10:26:29,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2022-10-17 10:26:29,513 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-10-17 10:26:29,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:29,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:29,520 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:29,520 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:29,521 INFO L748 eck$LassoCheckResult]: Stem: 5281#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5282#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5314#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5367#fibo1ENTRY ~n := #in~n; 5413#L10 assume !(~n < 1); 5412#L12 assume !(1 == ~n); 5408#L15 call #t~ret4 := fibo2(~n - 1);< 5411#fibo2ENTRY ~n := #in~n; 5410#L20 assume !(~n < 1); 5409#L22 assume !(1 == ~n); 5404#L25 call #t~ret6 := fibo1(~n - 1);< 5407#fibo1ENTRY ~n := #in~n; 5406#L10 assume !(~n < 1); 5405#L12 assume !(1 == ~n); 5400#L15 call #t~ret4 := fibo2(~n - 1);< 5403#fibo2ENTRY ~n := #in~n; 5402#L20 assume !(~n < 1); 5401#L22 assume !(1 == ~n); 5396#L25 call #t~ret6 := fibo1(~n - 1);< 5399#fibo1ENTRY ~n := #in~n; 5398#L10 assume !(~n < 1); 5397#L12 assume !(1 == ~n); 5381#L15 call #t~ret4 := fibo2(~n - 1);< 5379#fibo2ENTRY ~n := #in~n; 5389#L20 assume !(~n < 1); 5390#L22 assume !(1 == ~n); 5319#L25 call #t~ret6 := fibo1(~n - 1);< 5391#fibo1ENTRY ~n := #in~n; 5392#L10 assume !(~n < 1); 5535#L12 assume 1 == ~n;#res := 1; 5533#fibo1FINAL assume true; 5531#fibo1EXIT >#46#return; 5483#L25-1 call #t~ret7 := fibo1(~n - 2);< 5529#fibo1ENTRY ~n := #in~n; 5492#L10 assume !(~n < 1); 5489#L12 assume !(1 == ~n); 5471#L15 call #t~ret4 := fibo2(~n - 1);< 5480#fibo2ENTRY ~n := #in~n; 5477#L20 assume !(~n < 1); 5474#L22 assume 1 == ~n;#res := 1; 5475#fibo2FINAL assume true; 5584#fibo2EXIT >#50#return; 5357#L15-1 [2022-10-17 10:26:29,521 INFO L750 eck$LassoCheckResult]: Loop: 5357#L15-1 call #t~ret5 := fibo2(~n - 2);< 5520#fibo2ENTRY ~n := #in~n; 5350#L20 assume !(~n < 1); 5359#L22 assume !(1 == ~n); 5503#L25 call #t~ret6 := fibo1(~n - 1);< 5571#fibo1ENTRY ~n := #in~n; 5588#L10 assume !(~n < 1); 5585#L12 assume 1 == ~n;#res := 1; 5586#fibo1FINAL assume true; 5600#fibo1EXIT >#46#return; 5546#L25-1 call #t~ret7 := fibo1(~n - 2);< 5598#fibo1ENTRY ~n := #in~n; 5597#L10 assume !(~n < 1); 5595#L12 assume !(1 == ~n); 5351#L15 call #t~ret4 := fibo2(~n - 1);< 5542#fibo2ENTRY ~n := #in~n; 5350#L20 assume !(~n < 1); 5359#L22 assume !(1 == ~n); 5503#L25 call #t~ret6 := fibo1(~n - 1);< 5571#fibo1ENTRY ~n := #in~n; 5588#L10 assume !(~n < 1); 5585#L12 assume 1 == ~n;#res := 1; 5586#fibo1FINAL assume true; 5600#fibo1EXIT >#46#return; 5546#L25-1 call #t~ret7 := fibo1(~n - 2);< 5598#fibo1ENTRY ~n := #in~n; 5597#L10 assume !(~n < 1); 5595#L12 assume !(1 == ~n); 5351#L15 call #t~ret4 := fibo2(~n - 1);< 5542#fibo2ENTRY ~n := #in~n; 5578#L20 assume !(~n < 1); 5627#L22 assume 1 == ~n;#res := 1; 5592#fibo2FINAL assume true; 5582#fibo2EXIT >#50#return; 5357#L15-1 call #t~ret5 := fibo2(~n - 2);< 5520#fibo2ENTRY ~n := #in~n; 5577#L20 assume ~n < 1;#res := 0; 5606#fibo2FINAL assume true; 5579#fibo2EXIT >#52#return; 5519#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5634#fibo1FINAL assume true; 5631#fibo1EXIT >#48#return; 5565#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5626#fibo2FINAL assume true; 5581#fibo2EXIT >#50#return; 5357#L15-1 [2022-10-17 10:26:29,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1816161101, now seen corresponding path program 1 times [2022-10-17 10:26:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137904167] [2022-10-17 10:26:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:29,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:26:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:29,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:26:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:29,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:29,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137904167] [2022-10-17 10:26:29,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137904167] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:29,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872361440] [2022-10-17 10:26:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:29,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:29,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:29,790 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:29,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-10-17 10:26:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:29,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:26:29,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:29,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:30,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872361440] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:30,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:30,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2022-10-17 10:26:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896982122] [2022-10-17 10:26:30,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:30,105 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:26:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash 204607418, now seen corresponding path program 1 times [2022-10-17 10:26:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859207922] [2022-10-17 10:26:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:30,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:26:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:26:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:26:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859207922] [2022-10-17 10:26:30,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859207922] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:30,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799356992] [2022-10-17 10:26:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:30,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:30,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:30,263 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:30,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-10-17 10:26:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:26:30,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-17 10:26:30,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-17 10:26:30,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799356992] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:30,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:30,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-10-17 10:26:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114813684] [2022-10-17 10:26:30,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:30,425 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:26:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 10:26:30,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:26:30,426 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 13 states have internal predecessors, (41), 8 states have call successors, (10), 8 states have call predecessors, (10), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:26:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:30,734 INFO L93 Difference]: Finished difference Result 436 states and 604 transitions. [2022-10-17 10:26:30,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 436 states and 604 transitions. [2022-10-17 10:26:30,742 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-10-17 10:26:30,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 436 states to 431 states and 597 transitions. [2022-10-17 10:26:30,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 231 [2022-10-17 10:26:30,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 231 [2022-10-17 10:26:30,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 431 states and 597 transitions. [2022-10-17 10:26:30,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:30,750 INFO L218 hiAutomatonCegarLoop]: Abstraction has 431 states and 597 transitions. [2022-10-17 10:26:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states and 597 transitions. [2022-10-17 10:26:30,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2022-10-17 10:26:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 276 states have (on average 1.2028985507246377) internal successors, (332), 304 states have internal predecessors, (332), 89 states have call successors, (92), 60 states have call predecessors, (92), 60 states have return successors, (152), 60 states have call predecessors, (152), 87 states have call successors, (152) [2022-10-17 10:26:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 576 transitions. [2022-10-17 10:26:30,770 INFO L240 hiAutomatonCegarLoop]: Abstraction has 425 states and 576 transitions. [2022-10-17 10:26:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:26:30,771 INFO L428 stractBuchiCegarLoop]: Abstraction has 425 states and 576 transitions. [2022-10-17 10:26:30,771 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-10-17 10:26:30,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 425 states and 576 transitions. [2022-10-17 10:26:30,775 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-10-17 10:26:30,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:30,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:30,777 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:30,777 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:30,777 INFO L748 eck$LassoCheckResult]: Stem: 6763#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6764#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 6796#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6854#fibo1ENTRY ~n := #in~n; 6923#L10 assume !(~n < 1); 6922#L12 assume !(1 == ~n); 6918#L15 call #t~ret4 := fibo2(~n - 1);< 6921#fibo2ENTRY ~n := #in~n; 6920#L20 assume !(~n < 1); 6919#L22 assume !(1 == ~n); 6914#L25 call #t~ret6 := fibo1(~n - 1);< 6917#fibo1ENTRY ~n := #in~n; 6916#L10 assume !(~n < 1); 6915#L12 assume !(1 == ~n); 6910#L15 call #t~ret4 := fibo2(~n - 1);< 6913#fibo2ENTRY ~n := #in~n; 6912#L20 assume !(~n < 1); 6911#L22 assume !(1 == ~n); 6906#L25 call #t~ret6 := fibo1(~n - 1);< 6909#fibo1ENTRY ~n := #in~n; 6908#L10 assume !(~n < 1); 6907#L12 assume !(1 == ~n); 6897#L15 call #t~ret4 := fibo2(~n - 1);< 6905#fibo2ENTRY ~n := #in~n; 6904#L20 assume !(~n < 1); 6901#L22 assume !(1 == ~n); 6808#L25 call #t~ret6 := fibo1(~n - 1);< 6898#fibo1ENTRY ~n := #in~n; 6902#L10 assume !(~n < 1); 7000#L12 assume !(1 == ~n); 6983#L15 call #t~ret4 := fibo2(~n - 1);< 7002#fibo2ENTRY ~n := #in~n; 7006#L20 assume !(~n < 1); 7004#L22 assume 1 == ~n;#res := 1; 7003#fibo2FINAL assume true; 7001#fibo2EXIT >#50#return; 6998#L15-1 call #t~ret5 := fibo2(~n - 2);< 6999#fibo2ENTRY ~n := #in~n; 7007#L20 assume ~n < 1;#res := 0; 7005#fibo2FINAL assume true; 6997#fibo2EXIT >#52#return; 6995#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6994#fibo1FINAL assume true; 6992#fibo1EXIT >#46#return; 6986#L25-1 call #t~ret7 := fibo1(~n - 2);< 6991#fibo1ENTRY ~n := #in~n; 7080#L10 assume ~n < 1;#res := 0; 7078#fibo1FINAL assume true; 7077#fibo1EXIT >#48#return; 7076#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7065#fibo2FINAL assume true; 7064#fibo2EXIT >#50#return; 6783#L15-1 call #t~ret5 := fibo2(~n - 2);< 7034#fibo2ENTRY [2022-10-17 10:26:30,778 INFO L750 eck$LassoCheckResult]: Loop: 7034#fibo2ENTRY ~n := #in~n; 6841#L20 assume !(~n < 1); 6842#L22 assume !(1 == ~n); 6776#L25 call #t~ret6 := fibo1(~n - 1);< 6790#fibo1ENTRY ~n := #in~n; 6791#L10 assume !(~n < 1); 7164#L12 assume !(1 == ~n); 6781#L15 call #t~ret4 := fibo2(~n - 1);< 6852#fibo2ENTRY ~n := #in~n; 6853#L20 assume !(~n < 1); 7163#L22 assume 1 == ~n;#res := 1; 7162#fibo2FINAL assume true; 7069#fibo2EXIT >#50#return; 6785#L15-1 call #t~ret5 := fibo2(~n - 2);< 7034#fibo2ENTRY [2022-10-17 10:26:30,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash -199100099, now seen corresponding path program 1 times [2022-10-17 10:26:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:30,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082613327] [2022-10-17 10:26:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:26:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:26:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:26:31,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:31,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082613327] [2022-10-17 10:26:31,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082613327] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:31,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358695823] [2022-10-17 10:26:31,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:31,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:31,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:31,141 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:31,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-10-17 10:26:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:31,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:26:31,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:26:31,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:26:31,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358695823] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:31,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:31,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2022-10-17 10:26:31,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568517526] [2022-10-17 10:26:31,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:31,627 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:26:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -767060718, now seen corresponding path program 1 times [2022-10-17 10:26:31,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:31,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395091952] [2022-10-17 10:26:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:31,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:31,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:31,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:31,777 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:31,777 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:31,777 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:31,777 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:31,777 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:26:31,777 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:31,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:31,778 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:31,778 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration6_Loop [2022-10-17 10:26:31,778 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:31,778 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:31,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,781 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,785 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,787 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,790 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,793 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,795 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,797 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:31,840 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:31,840 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:26:31,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:31,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:31,844 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:31,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:31,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:31,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-10-17 10:26:31,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:31,869 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:31,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:31,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:31,905 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:31,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:31,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:31,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-10-17 10:26:31,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:31,931 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:31,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2022-10-17 10:26:31,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:31,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:31,961 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:31,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:31,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:31,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-10-17 10:26:31,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:31,995 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:32,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:32,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,033 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:32,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:32,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-10-17 10:26:32,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:32,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:32,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-10-17 10:26:32,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,090 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-10-17 10:26:32,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:32,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:32,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:32,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:32,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:32,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,122 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-10-17 10:26:32,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:32,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:32,132 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:32,132 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:32,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-10-17 10:26:32,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,155 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-10-17 10:26:32,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:32,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:32,165 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:32,165 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:32,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2022-10-17 10:26:32,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,192 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-10-17 10:26:32,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:32,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:32,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2022-10-17 10:26:32,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,221 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-10-17 10:26:32,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:26:32,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:32,302 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:26:32,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2022-10-17 10:26:32,304 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:32,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:32,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:32,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:32,304 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:26:32,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:32,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:32,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration6_Loop [2022-10-17 10:26:32,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:32,305 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:32,306 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,308 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,310 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,311 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,313 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,314 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,316 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,318 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:32,379 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:32,380 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:26:32,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,381 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,394 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:26:32,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-10-17 10:26:32,419 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:32,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-10-17 10:26:32,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,440 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-10-17 10:26:32,455 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 [2022-10-17 10:26:32,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,495 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:32,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:32,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,531 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,536 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 [2022-10-17 10:26:32,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-10-17 10:26:32,555 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:32,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2022-10-17 10:26:32,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,582 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-10-17 10:26:32,583 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 [2022-10-17 10:26:32,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,592 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:32,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:32,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,629 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,631 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:26:32,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,640 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,641 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-10-17 10:26:32,651 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:32,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:32,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,688 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,690 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 [2022-10-17 10:26:32,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,700 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-10-17 10:26:32,709 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:32,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2022-10-17 10:26:32,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,738 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-10-17 10:26:32,744 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 [2022-10-17 10:26:32,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,782 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:32,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:32,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,816 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,823 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 [2022-10-17 10:26:32,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:32,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:32,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:32,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:32,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:32,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:32,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:32,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-10-17 10:26:32,847 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:26:32,849 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:26:32,849 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:26:32,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:32,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:32,851 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:32,852 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:26:32,853 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:26:32,853 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:26:32,853 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-10-17 10:26:32,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-10-17 10:26:32,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:32,886 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:26:32,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:32,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:26:32,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:33,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:26:33,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:33,395 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-10-17 10:26:33,395 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 425 states and 576 transitions. cyclomatic complexity: 158 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:26:33,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:33,765 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 425 states and 576 transitions. cyclomatic complexity: 158. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 1312 states and 1784 transitions. Complement of second has 28 states. [2022-10-17 10:26:33,766 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 [2022-10-17 10:26:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:26:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 52 transitions. [2022-10-17 10:26:33,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 52 transitions. Stem has 53 letters. Loop has 14 letters. [2022-10-17 10:26:33,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:33,769 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:33,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:26:33,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:34,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:26:34,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:34,281 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2022-10-17 10:26:34,281 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 425 states and 576 transitions. cyclomatic complexity: 158 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:26:34,607 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 425 states and 576 transitions. cyclomatic complexity: 158. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 1312 states and 1784 transitions. Complement of second has 28 states. [2022-10-17 10:26:34,607 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 [2022-10-17 10:26:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:26:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 52 transitions. [2022-10-17 10:26:34,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 52 transitions. Stem has 53 letters. Loop has 14 letters. [2022-10-17 10:26:34,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:34,609 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:34,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:34,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:26:34,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:34,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:26:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:35,073 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-10-17 10:26:35,073 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 425 states and 576 transitions. cyclomatic complexity: 158 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:26:35,403 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 425 states and 576 transitions. cyclomatic complexity: 158. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 1161 states and 1558 transitions. Complement of second has 30 states. [2022-10-17 10:26:35,404 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 [2022-10-17 10:26:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:26:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-10-17 10:26:35,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 53 letters. Loop has 14 letters. [2022-10-17 10:26:35,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:35,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 67 letters. Loop has 14 letters. [2022-10-17 10:26:35,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:35,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 53 letters. Loop has 28 letters. [2022-10-17 10:26:35,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:35,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1161 states and 1558 transitions. [2022-10-17 10:26:35,428 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 102 [2022-10-17 10:26:35,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1161 states to 707 states and 1027 transitions. [2022-10-17 10:26:35,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2022-10-17 10:26:35,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 259 [2022-10-17 10:26:35,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 707 states and 1027 transitions. [2022-10-17 10:26:35,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:35,446 INFO L218 hiAutomatonCegarLoop]: Abstraction has 707 states and 1027 transitions. [2022-10-17 10:26:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states and 1027 transitions. [2022-10-17 10:26:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 559. [2022-10-17 10:26:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 361 states have (on average 1.2077562326869806) internal successors, (436), 387 states have internal predecessors, (436), 120 states have call successors, (123), 78 states have call predecessors, (123), 78 states have return successors, (198), 93 states have call predecessors, (198), 118 states have call successors, (198) [2022-10-17 10:26:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 757 transitions. [2022-10-17 10:26:35,477 INFO L240 hiAutomatonCegarLoop]: Abstraction has 559 states and 757 transitions. [2022-10-17 10:26:35,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 10:26:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:26:35,478 INFO L87 Difference]: Start difference. First operand 559 states and 757 transitions. Second operand has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 18 states have internal predecessors, (49), 12 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-10-17 10:26:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:35,971 INFO L93 Difference]: Finished difference Result 641 states and 864 transitions. [2022-10-17 10:26:35,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 641 states and 864 transitions. [2022-10-17 10:26:35,980 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2022-10-17 10:26:35,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 641 states to 641 states and 864 transitions. [2022-10-17 10:26:35,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2022-10-17 10:26:35,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2022-10-17 10:26:35,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 641 states and 864 transitions. [2022-10-17 10:26:35,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:35,992 INFO L218 hiAutomatonCegarLoop]: Abstraction has 641 states and 864 transitions. [2022-10-17 10:26:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states and 864 transitions. [2022-10-17 10:26:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 580. [2022-10-17 10:26:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 375 states have (on average 1.2) internal successors, (450), 401 states have internal predecessors, (450), 121 states have call successors, (124), 79 states have call predecessors, (124), 84 states have return successors, (205), 99 states have call predecessors, (205), 119 states have call successors, (205) [2022-10-17 10:26:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 779 transitions. [2022-10-17 10:26:36,015 INFO L240 hiAutomatonCegarLoop]: Abstraction has 580 states and 779 transitions. [2022-10-17 10:26:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-17 10:26:36,016 INFO L428 stractBuchiCegarLoop]: Abstraction has 580 states and 779 transitions. [2022-10-17 10:26:36,016 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-10-17 10:26:36,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 580 states and 779 transitions. [2022-10-17 10:26:36,028 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2022-10-17 10:26:36,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:36,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:36,035 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 8, 7, 7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2022-10-17 10:26:36,035 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-10-17 10:26:36,036 INFO L748 eck$LassoCheckResult]: Stem: 13355#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 13356#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 13386#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 13430#fibo1ENTRY ~n := #in~n; 13590#L10 assume !(~n < 1); 13589#L12 assume !(1 == ~n); 13585#L15 call #t~ret4 := fibo2(~n - 1);< 13588#fibo2ENTRY ~n := #in~n; 13587#L20 assume !(~n < 1); 13586#L22 assume !(1 == ~n); 13581#L25 call #t~ret6 := fibo1(~n - 1);< 13584#fibo1ENTRY ~n := #in~n; 13583#L10 assume !(~n < 1); 13582#L12 assume !(1 == ~n); 13577#L15 call #t~ret4 := fibo2(~n - 1);< 13580#fibo2ENTRY ~n := #in~n; 13579#L20 assume !(~n < 1); 13578#L22 assume !(1 == ~n); 13573#L25 call #t~ret6 := fibo1(~n - 1);< 13576#fibo1ENTRY ~n := #in~n; 13575#L10 assume !(~n < 1); 13574#L12 assume !(1 == ~n); 13564#L15 call #t~ret4 := fibo2(~n - 1);< 13572#fibo2ENTRY ~n := #in~n; 13571#L20 assume !(~n < 1); 13570#L22 assume !(1 == ~n); 13549#L25 call #t~ret6 := fibo1(~n - 1);< 13562#fibo1ENTRY ~n := #in~n; 13560#L10 assume !(~n < 1); 13558#L12 assume !(1 == ~n); 13554#L15 call #t~ret4 := fibo2(~n - 1);< 13555#fibo2ENTRY ~n := #in~n; 13561#L20 assume !(~n < 1); 13559#L22 assume !(1 == ~n); 13550#L25 call #t~ret6 := fibo1(~n - 1);< 13562#fibo1ENTRY ~n := #in~n; 13560#L10 assume !(~n < 1); 13558#L12 assume !(1 == ~n); 13554#L15 call #t~ret4 := fibo2(~n - 1);< 13555#fibo2ENTRY ~n := #in~n; 13561#L20 assume !(~n < 1); 13559#L22 assume 1 == ~n;#res := 1; 13556#fibo2FINAL assume true; 13553#fibo2EXIT >#50#return; 13534#L15-1 call #t~ret5 := fibo2(~n - 2);< 13545#fibo2ENTRY ~n := #in~n; 13546#L20 assume !(~n < 1); 13878#L22 assume !(1 == ~n); 13875#L25 call #t~ret6 := fibo1(~n - 1);< 13876#fibo1ENTRY ~n := #in~n; 13880#L10 assume !(~n < 1); 13879#L12 assume 1 == ~n;#res := 1; 13877#fibo1FINAL assume true; 13874#fibo1EXIT >#46#return; 13872#L25-1 call #t~ret7 := fibo1(~n - 2);< 13873#fibo1ENTRY ~n := #in~n; 13887#L10 assume ~n < 1;#res := 0; 13885#fibo1FINAL assume true; 13871#fibo1EXIT >#48#return; 13861#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13852#fibo2FINAL assume true; 13746#fibo2EXIT >#52#return; 13701#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13735#fibo1FINAL assume true; 13729#fibo1EXIT >#46#return; 13721#L25-1 call #t~ret7 := fibo1(~n - 2);< 13727#fibo1ENTRY ~n := #in~n; 13867#L10 assume !(~n < 1); 13863#L12 assume !(1 == ~n); 13736#L15 call #t~ret4 := fibo2(~n - 1);< 13757#fibo2ENTRY ~n := #in~n; 13768#L20 assume !(~n < 1); 13765#L22 assume !(1 == ~n); 13723#L25 call #t~ret6 := fibo1(~n - 1);< 13727#fibo1ENTRY ~n := #in~n; 13867#L10 assume !(~n < 1); 13863#L12 assume !(1 == ~n); 13736#L15 call #t~ret4 := fibo2(~n - 1);< 13757#fibo2ENTRY ~n := #in~n; 13768#L20 assume !(~n < 1); 13765#L22 assume 1 == ~n;#res := 1; 13766#fibo2FINAL assume true; 13756#fibo2EXIT >#50#return; 13697#L15-1 call #t~ret5 := fibo2(~n - 2);< 13704#fibo2ENTRY ~n := #in~n; 13759#L20 assume ~n < 1;#res := 0; 13752#fibo2FINAL assume true; 13743#fibo2EXIT >#52#return; 13701#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13735#fibo1FINAL assume true; 13729#fibo1EXIT >#46#return; 13721#L25-1 call #t~ret7 := fibo1(~n - 2);< 13727#fibo1ENTRY ~n := #in~n; 13867#L10 assume !(~n < 1); 13863#L12 assume 1 == ~n;#res := 1; 13675#fibo1FINAL assume true; 13720#fibo1EXIT >#48#return; 13726#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13773#fibo2FINAL assume true; 13745#fibo2EXIT >#50#return; 13697#L15-1 call #t~ret5 := fibo2(~n - 2);< 13704#fibo2ENTRY ~n := #in~n; 13759#L20 assume ~n < 1;#res := 0; 13752#fibo2FINAL assume true; 13743#fibo2EXIT >#52#return; 13701#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13735#fibo1FINAL assume true; 13729#fibo1EXIT >#48#return; 13726#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13773#fibo2FINAL assume true; 13745#fibo2EXIT >#50#return; 13697#L15-1 [2022-10-17 10:26:36,036 INFO L750 eck$LassoCheckResult]: Loop: 13697#L15-1 call #t~ret5 := fibo2(~n - 2);< 13704#fibo2ENTRY ~n := #in~n; 13762#L20 assume !(~n < 1); 13767#L22 assume !(1 == ~n); 13732#L25 call #t~ret6 := fibo1(~n - 1);< 13737#fibo1ENTRY ~n := #in~n; 13776#L10 assume !(~n < 1); 13774#L12 assume !(1 == ~n); 13365#L15 call #t~ret4 := fibo2(~n - 1);< 13758#fibo2ENTRY ~n := #in~n; 13762#L20 assume !(~n < 1); 13767#L22 assume !(1 == ~n); 13732#L25 call #t~ret6 := fibo1(~n - 1);< 13737#fibo1ENTRY ~n := #in~n; 13776#L10 assume !(~n < 1); 13774#L12 assume !(1 == ~n); 13365#L15 call #t~ret4 := fibo2(~n - 1);< 13758#fibo2ENTRY ~n := #in~n; 13769#L20 assume !(~n < 1); 13363#L22 assume 1 == ~n;#res := 1; 13366#fibo2FINAL assume true; 13403#fibo2EXIT >#50#return; 13672#L15-1 call #t~ret5 := fibo2(~n - 2);< 13747#fibo2ENTRY ~n := #in~n; 13869#L20 assume ~n < 1;#res := 0; 13866#fibo2FINAL assume true; 13744#fibo2EXIT >#52#return; 13701#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13735#fibo1FINAL assume true; 13729#fibo1EXIT >#46#return; 13721#L25-1 call #t~ret7 := fibo1(~n - 2);< 13727#fibo1ENTRY ~n := #in~n; 13867#L10 assume !(~n < 1); 13863#L12 assume !(1 == ~n); 13736#L15 call #t~ret4 := fibo2(~n - 1);< 13757#fibo2ENTRY ~n := #in~n; 13768#L20 assume !(~n < 1); 13765#L22 assume !(1 == ~n); 13723#L25 call #t~ret6 := fibo1(~n - 1);< 13727#fibo1ENTRY ~n := #in~n; 13867#L10 assume !(~n < 1); 13863#L12 assume !(1 == ~n); 13736#L15 call #t~ret4 := fibo2(~n - 1);< 13757#fibo2ENTRY ~n := #in~n; 13768#L20 assume !(~n < 1); 13765#L22 assume 1 == ~n;#res := 1; 13766#fibo2FINAL assume true; 13756#fibo2EXIT >#50#return; 13697#L15-1 call #t~ret5 := fibo2(~n - 2);< 13704#fibo2ENTRY ~n := #in~n; 13759#L20 assume ~n < 1;#res := 0; 13752#fibo2FINAL assume true; 13743#fibo2EXIT >#52#return; 13701#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13735#fibo1FINAL assume true; 13729#fibo1EXIT >#46#return; 13721#L25-1 call #t~ret7 := fibo1(~n - 2);< 13727#fibo1ENTRY ~n := #in~n; 13867#L10 assume !(~n < 1); 13863#L12 assume 1 == ~n;#res := 1; 13675#fibo1FINAL assume true; 13720#fibo1EXIT >#48#return; 13726#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13773#fibo2FINAL assume true; 13745#fibo2EXIT >#50#return; 13697#L15-1 call #t~ret5 := fibo2(~n - 2);< 13704#fibo2ENTRY ~n := #in~n; 13759#L20 assume ~n < 1;#res := 0; 13752#fibo2FINAL assume true; 13743#fibo2EXIT >#52#return; 13701#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13735#fibo1FINAL assume true; 13729#fibo1EXIT >#48#return; 13726#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13773#fibo2FINAL assume true; 13745#fibo2EXIT >#50#return; 13697#L15-1 [2022-10-17 10:26:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:36,037 INFO L85 PathProgramCache]: Analyzing trace with hash 509963004, now seen corresponding path program 1 times [2022-10-17 10:26:36,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:36,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57386192] [2022-10-17 10:26:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:36,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:26:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:26:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:26:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:26:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 51 proven. 159 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-10-17 10:26:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57386192] [2022-10-17 10:26:36,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57386192] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398665957] [2022-10-17 10:26:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:36,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:36,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:36,479 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:36,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-10-17 10:26:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:36,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:26:36,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 55 proven. 180 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-10-17 10:26:36,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 55 proven. 180 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-10-17 10:26:37,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398665957] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:37,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:37,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2022-10-17 10:26:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634378075] [2022-10-17 10:26:37,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:37,118 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:26:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:37,119 INFO L85 PathProgramCache]: Analyzing trace with hash 651349219, now seen corresponding path program 2 times [2022-10-17 10:26:37,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:37,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647418284] [2022-10-17 10:26:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:37,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:26:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:26:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:26:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:26:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-17 10:26:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:37,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647418284] [2022-10-17 10:26:37,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647418284] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:37,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459056809] [2022-10-17 10:26:37,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:26:37,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:37,467 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:37,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-10-17 10:26:37,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:26:37,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:26:37,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:26:37,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-10-17 10:26:37,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-10-17 10:26:38,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459056809] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:38,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:38,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-10-17 10:26:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445599110] [2022-10-17 10:26:38,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:38,071 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:26:38,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:38,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 10:26:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:26:38,072 INFO L87 Difference]: Start difference. First operand 580 states and 779 transitions. cyclomatic complexity: 207 Second operand has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 12 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 8 states have call predecessors, (19), 12 states have call successors, (19) [2022-10-17 10:26:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:38,341 INFO L93 Difference]: Finished difference Result 295 states and 378 transitions. [2022-10-17 10:26:38,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 295 states and 378 transitions. [2022-10-17 10:26:38,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2022-10-17 10:26:38,349 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 295 states to 246 states and 314 transitions. [2022-10-17 10:26:38,349 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 169 [2022-10-17 10:26:38,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2022-10-17 10:26:38,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 246 states and 314 transitions. [2022-10-17 10:26:38,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:38,350 INFO L218 hiAutomatonCegarLoop]: Abstraction has 246 states and 314 transitions. [2022-10-17 10:26:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states and 314 transitions. [2022-10-17 10:26:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 227. [2022-10-17 10:26:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 147 states have (on average 1.1156462585034013) internal successors, (164), 152 states have internal predecessors, (164), 46 states have call successors, (46), 31 states have call predecessors, (46), 34 states have return successors, (81), 43 states have call predecessors, (81), 44 states have call successors, (81) [2022-10-17 10:26:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 291 transitions. [2022-10-17 10:26:38,359 INFO L240 hiAutomatonCegarLoop]: Abstraction has 227 states and 291 transitions. [2022-10-17 10:26:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:26:38,360 INFO L428 stractBuchiCegarLoop]: Abstraction has 227 states and 291 transitions. [2022-10-17 10:26:38,360 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-10-17 10:26:38,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 227 states and 291 transitions. [2022-10-17 10:26:38,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2022-10-17 10:26:38,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:38,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:38,365 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:38,366 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-10-17 10:26:38,366 INFO L748 eck$LassoCheckResult]: Stem: 15849#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 15850#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 15886#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 15925#fibo1ENTRY ~n := #in~n; 15964#L10 assume !(~n < 1); 15962#L12 assume !(1 == ~n); 15923#L15 call #t~ret4 := fibo2(~n - 1);< 15922#fibo2ENTRY ~n := #in~n; 15924#L20 assume !(~n < 1); 15974#L22 assume !(1 == ~n); 15970#L25 call #t~ret6 := fibo1(~n - 1);< 15971#fibo1ENTRY ~n := #in~n; 15992#L10 assume !(~n < 1); 15990#L12 assume !(1 == ~n); 15985#L15 call #t~ret4 := fibo2(~n - 1);< 15986#fibo2ENTRY ~n := #in~n; 16003#L20 assume !(~n < 1); 16002#L22 assume !(1 == ~n); 15877#L25 call #t~ret6 := fibo1(~n - 1);< 15876#fibo1ENTRY ~n := #in~n; 15878#L10 assume !(~n < 1); 16011#L12 assume !(1 == ~n); 15855#L15 call #t~ret4 := fibo2(~n - 1);< 16006#fibo2ENTRY ~n := #in~n; 15920#L20 assume !(~n < 1); 15854#L22 assume !(1 == ~n); 15856#L25 call #t~ret6 := fibo1(~n - 1);< 15891#fibo1ENTRY ~n := #in~n; 15999#L10 assume !(~n < 1); 15993#L12 assume !(1 == ~n); 15852#L15 call #t~ret4 := fibo2(~n - 1);< 15988#fibo2ENTRY ~n := #in~n; 15983#L20 assume !(~n < 1); 15851#L22 assume 1 == ~n;#res := 1; 15853#fibo2FINAL assume true; 16030#fibo2EXIT >#50#return; 16028#L15-1 call #t~ret5 := fibo2(~n - 2);< 16029#fibo2ENTRY ~n := #in~n; 16034#L20 assume ~n < 1;#res := 0; 16033#fibo2FINAL assume true; 16027#fibo2EXIT >#52#return; 16026#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 16024#fibo1FINAL assume true; 16023#fibo1EXIT >#46#return; 15880#L25-1 call #t~ret7 := fibo1(~n - 2);< 16014#fibo1ENTRY ~n := #in~n; 16021#L10 assume !(~n < 1); 16019#L12 assume 1 == ~n;#res := 1; 16018#fibo1FINAL assume true; 16013#fibo1EXIT >#48#return; 16010#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 16007#fibo2FINAL assume true; 16004#fibo2EXIT >#50#return; 15864#L15-1 call #t~ret5 := fibo2(~n - 2);< 15951#fibo2ENTRY [2022-10-17 10:26:38,367 INFO L750 eck$LassoCheckResult]: Loop: 15951#fibo2ENTRY ~n := #in~n; 15937#L20 assume !(~n < 1); 16025#L22 assume !(1 == ~n); 15894#L25 call #t~ret6 := fibo1(~n - 1);< 15933#fibo1ENTRY ~n := #in~n; 15930#L10 assume !(~n < 1); 15929#L12 assume !(1 == ~n); 15868#L15 call #t~ret4 := fibo2(~n - 1);< 15928#fibo2ENTRY ~n := #in~n; 15937#L20 assume !(~n < 1); 16025#L22 assume !(1 == ~n); 15894#L25 call #t~ret6 := fibo1(~n - 1);< 15933#fibo1ENTRY ~n := #in~n; 15930#L10 assume !(~n < 1); 15929#L12 assume !(1 == ~n); 15868#L15 call #t~ret4 := fibo2(~n - 1);< 15928#fibo2ENTRY ~n := #in~n; 15936#L20 assume !(~n < 1); 15934#L22 assume !(1 == ~n); 15885#L25 call #t~ret6 := fibo1(~n - 1);< 15932#fibo1ENTRY ~n := #in~n; 15939#L10 assume !(~n < 1); 15938#L12 assume 1 == ~n;#res := 1; 15931#fibo1FINAL assume true; 15884#fibo1EXIT >#46#return; 15861#L25-1 call #t~ret7 := fibo1(~n - 2);< 15869#fibo1ENTRY ~n := #in~n; 15943#L10 assume ~n < 1;#res := 0; 15860#fibo1FINAL assume true; 15862#fibo1EXIT >#48#return; 15899#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 15900#fibo2FINAL assume true; 15906#fibo2EXIT >#50#return; 15888#L15-1 call #t~ret5 := fibo2(~n - 2);< 15896#fibo2ENTRY ~n := #in~n; 16069#L20 assume ~n < 1;#res := 0; 15919#fibo2FINAL assume true; 16064#fibo2EXIT >#52#return; 15976#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 16036#fibo1FINAL assume true; 16020#fibo1EXIT >#46#return; 15914#L25-1 call #t~ret7 := fibo1(~n - 2);< 16017#fibo1ENTRY ~n := #in~n; 16043#L10 assume !(~n < 1); 16037#L12 assume !(1 == ~n); 15909#L15 call #t~ret4 := fibo2(~n - 1);< 15916#fibo2ENTRY ~n := #in~n; 16054#L20 assume !(~n < 1); 16053#L22 assume 1 == ~n;#res := 1; 16052#fibo2FINAL assume true; 16050#fibo2EXIT >#50#return; 16040#L15-1 call #t~ret5 := fibo2(~n - 2);< 16049#fibo2ENTRY ~n := #in~n; 16051#L20 assume ~n < 1;#res := 0; 16048#fibo2FINAL assume true; 16039#fibo2EXIT >#52#return; 15926#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 15927#fibo1FINAL assume true; 15994#fibo1EXIT >#48#return; 15995#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 16059#fibo2FINAL assume true; 16056#fibo2EXIT >#50#return; 15865#L15-1 call #t~ret5 := fibo2(~n - 2);< 15951#fibo2ENTRY [2022-10-17 10:26:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -430230985, now seen corresponding path program 1 times [2022-10-17 10:26:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:38,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735862448] [2022-10-17 10:26:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:38,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:38,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:38,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash 715172710, now seen corresponding path program 1 times [2022-10-17 10:26:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:38,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008338161] [2022-10-17 10:26:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:38,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:26:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:26:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:26:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 19 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-10-17 10:26:38,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008338161] [2022-10-17 10:26:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008338161] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099803094] [2022-10-17 10:26:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:38,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:38,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:38,624 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:38,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-10-17 10:26:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:38,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:26:38,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-17 10:26:38,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-17 10:26:39,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099803094] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:39,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:39,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-10-17 10:26:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308619096] [2022-10-17 10:26:39,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:39,084 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:26:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:26:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:26:39,085 INFO L87 Difference]: Start difference. First operand 227 states and 291 transitions. cyclomatic complexity: 66 Second operand has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2022-10-17 10:26:39,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:39,244 INFO L93 Difference]: Finished difference Result 239 states and 304 transitions. [2022-10-17 10:26:39,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 239 states and 304 transitions. [2022-10-17 10:26:39,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2022-10-17 10:26:39,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 239 states to 237 states and 302 transitions. [2022-10-17 10:26:39,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 166 [2022-10-17 10:26:39,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 166 [2022-10-17 10:26:39,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 237 states and 302 transitions. [2022-10-17 10:26:39,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:26:39,252 INFO L218 hiAutomatonCegarLoop]: Abstraction has 237 states and 302 transitions. [2022-10-17 10:26:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states and 302 transitions. [2022-10-17 10:26:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2022-10-17 10:26:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 146 states have (on average 1.1164383561643836) internal successors, (163), 150 states have internal predecessors, (163), 45 states have call successors, (45), 31 states have call predecessors, (45), 33 states have return successors, (78), 42 states have call predecessors, (78), 43 states have call successors, (78) [2022-10-17 10:26:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 286 transitions. [2022-10-17 10:26:39,260 INFO L240 hiAutomatonCegarLoop]: Abstraction has 224 states and 286 transitions. [2022-10-17 10:26:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:26:39,262 INFO L428 stractBuchiCegarLoop]: Abstraction has 224 states and 286 transitions. [2022-10-17 10:26:39,263 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-10-17 10:26:39,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 224 states and 286 transitions. [2022-10-17 10:26:39,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2022-10-17 10:26:39,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:39,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:39,266 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:39,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:39,266 INFO L748 eck$LassoCheckResult]: Stem: 16850#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 16851#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 16883#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 16914#fibo1ENTRY ~n := #in~n; 16950#L10 assume !(~n < 1); 16948#L12 assume !(1 == ~n); 16912#L15 call #t~ret4 := fibo2(~n - 1);< 16911#fibo2ENTRY ~n := #in~n; 16913#L20 assume !(~n < 1); 16960#L22 assume !(1 == ~n); 16956#L25 call #t~ret6 := fibo1(~n - 1);< 16957#fibo1ENTRY ~n := #in~n; 16975#L10 assume !(~n < 1); 16973#L12 assume !(1 == ~n); 16969#L15 call #t~ret4 := fibo2(~n - 1);< 16970#fibo2ENTRY ~n := #in~n; 16989#L20 assume !(~n < 1); 16988#L22 assume !(1 == ~n); 16985#L25 call #t~ret6 := fibo1(~n - 1);< 16986#fibo1ENTRY ~n := #in~n; 16998#L10 assume !(~n < 1); 16996#L12 assume !(1 == ~n); 16991#L15 call #t~ret4 := fibo2(~n - 1);< 16993#fibo2ENTRY ~n := #in~n; 17016#L20 assume !(~n < 1); 17015#L22 assume !(1 == ~n); 16877#L25 call #t~ret6 := fibo1(~n - 1);< 16876#fibo1ENTRY ~n := #in~n; 16879#L10 assume !(~n < 1); 17030#L12 assume !(1 == ~n); 17028#L15 call #t~ret4 := fibo2(~n - 1);< 17029#fibo2ENTRY ~n := #in~n; 17035#L20 assume !(~n < 1); 17033#L22 assume 1 == ~n;#res := 1; 17032#fibo2FINAL assume true; 17027#fibo2EXIT >#50#return; 17025#L15-1 call #t~ret5 := fibo2(~n - 2);< 17026#fibo2ENTRY ~n := #in~n; 17036#L20 assume ~n < 1;#res := 0; 17034#fibo2FINAL assume true; 17024#fibo2EXIT >#52#return; 17023#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17022#fibo1FINAL assume true; 17012#fibo1EXIT >#46#return; 17001#L25-1 call #t~ret7 := fibo1(~n - 2);< 17004#fibo1ENTRY ~n := #in~n; 17018#L10 assume !(~n < 1); 17011#L12 assume 1 == ~n;#res := 1; 17010#fibo1FINAL assume true; 16999#fibo1EXIT >#48#return; 16997#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 16994#fibo2FINAL assume true; 16990#fibo2EXIT >#50#return; 16867#L15-1 call #t~ret5 := fibo2(~n - 2);< 16891#fibo2ENTRY [2022-10-17 10:26:39,267 INFO L750 eck$LassoCheckResult]: Loop: 16891#fibo2ENTRY ~n := #in~n; 16926#L20 assume !(~n < 1); 16929#L22 assume !(1 == ~n); 16886#L25 call #t~ret6 := fibo1(~n - 1);< 16922#fibo1ENTRY ~n := #in~n; 16919#L10 assume !(~n < 1); 16918#L12 assume !(1 == ~n); 16870#L15 call #t~ret4 := fibo2(~n - 1);< 16917#fibo2ENTRY ~n := #in~n; 16926#L20 assume !(~n < 1); 16929#L22 assume !(1 == ~n); 16886#L25 call #t~ret6 := fibo1(~n - 1);< 16922#fibo1ENTRY ~n := #in~n; 16919#L10 assume !(~n < 1); 16918#L12 assume !(1 == ~n); 16870#L15 call #t~ret4 := fibo2(~n - 1);< 16917#fibo2ENTRY ~n := #in~n; 16925#L20 assume !(~n < 1); 16923#L22 assume 1 == ~n;#res := 1; 16924#fibo2FINAL assume true; 17065#fibo2EXIT >#50#return; 16906#L15-1 call #t~ret5 := fibo2(~n - 2);< 16910#fibo2ENTRY ~n := #in~n; 16905#L20 assume ~n < 1;#res := 0; 16907#fibo2FINAL assume true; 17041#fibo2EXIT >#52#return; 17040#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17037#fibo1FINAL assume true; 16976#fibo1EXIT >#46#return; 16979#L25-1 call #t~ret7 := fibo1(~n - 2);< 17014#fibo1ENTRY ~n := #in~n; 17047#L10 assume !(~n < 1); 17042#L12 assume 1 == ~n;#res := 1; 17013#fibo1FINAL assume true; 17005#fibo1EXIT >#48#return; 17007#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17063#fibo2FINAL assume true; 17051#fibo2EXIT >#50#return; 16868#L15-1 call #t~ret5 := fibo2(~n - 2);< 16891#fibo2ENTRY [2022-10-17 10:26:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash -430230985, now seen corresponding path program 2 times [2022-10-17 10:26:39,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:39,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578286302] [2022-10-17 10:26:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:39,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:39,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:39,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2121786900, now seen corresponding path program 3 times [2022-10-17 10:26:39,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:39,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21338239] [2022-10-17 10:26:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:39,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:39,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:39,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1323744482, now seen corresponding path program 3 times [2022-10-17 10:26:39,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:39,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911893203] [2022-10-17 10:26:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:39,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:26:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:26:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:26:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:26:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:26:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:26:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 56 proven. 95 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-10-17 10:26:39,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:39,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911893203] [2022-10-17 10:26:39,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911893203] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:39,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421587056] [2022-10-17 10:26:39,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:26:39,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:39,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:39,610 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:39,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-10-17 10:26:39,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-17 10:26:39,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:26:39,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:26:39,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 79 proven. 75 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-17 10:26:39,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 79 proven. 77 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-10-17 10:26:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421587056] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:40,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:40,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 36 [2022-10-17 10:26:40,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56104172] [2022-10-17 10:26:40,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:40,908 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:40,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:40,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:40,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:40,908 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:26:40,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:40,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:40,908 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:40,908 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2022-10-17 10:26:40,908 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:40,908 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:40,909 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,911 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,912 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,927 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,929 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,931 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,933 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:40,983 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:40,984 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:26:40,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:40,985 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:40,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-10-17 10:26:40,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:40,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:40,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:40,995 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:41,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:41,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,016 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2022-10-17 10:26:41,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:41,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:41,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:41,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2022-10-17 10:26:41,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,048 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2022-10-17 10:26:41,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:41,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:41,057 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:41,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2022-10-17 10:26:41,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,077 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2022-10-17 10:26:41,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:41,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,086 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:41,086 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:41,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2022-10-17 10:26:41,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,107 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2022-10-17 10:26:41,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:41,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,116 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:41,116 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:41,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2022-10-17 10:26:41,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,136 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2022-10-17 10:26:41,137 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:41,137 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,146 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:41,146 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:41,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2022-10-17 10:26:41,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,166 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2022-10-17 10:26:41,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:41,169 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,177 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:41,177 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:41,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2022-10-17 10:26:41,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,197 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2022-10-17 10:26:41,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:41,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2022-10-17 10:26:41,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,227 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2022-10-17 10:26:41,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:26:41,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:41,303 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:26:41,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2022-10-17 10:26:41,305 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:41,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:41,306 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:41,306 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:41,306 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:26:41,306 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:41,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:41,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2022-10-17 10:26:41,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:41,306 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:41,306 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,308 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,310 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,311 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,312 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,314 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,315 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,317 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:41,370 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:41,370 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:26:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,371 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2022-10-17 10:26:41,372 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:26:41,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,381 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:41,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2022-10-17 10:26:41,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,401 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2022-10-17 10:26:41,402 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 [2022-10-17 10:26:41,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,410 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,411 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:41,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:41,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,431 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2022-10-17 10:26:41,432 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:26:41,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,442 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:41,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,463 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2022-10-17 10:26:41,464 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 [2022-10-17 10:26:41,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,471 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,471 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,472 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:41,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2022-10-17 10:26:41,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,492 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2022-10-17 10:26:41,494 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:26:41,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,507 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:41,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2022-10-17 10:26:41,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,526 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2022-10-17 10:26:41,527 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 [2022-10-17 10:26:41,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,535 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,535 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,537 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:41,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2022-10-17 10:26:41,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,557 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2022-10-17 10:26:41,558 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 [2022-10-17 10:26:41,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,575 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:26:41,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:41,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,602 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2022-10-17 10:26:41,604 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 [2022-10-17 10:26:41,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:26:41,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:26:41,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:26:41,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:26:41,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:26:41,627 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:26:41,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:26:41,634 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:26:41,636 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:26:41,636 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-10-17 10:26:41,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:41,638 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:41,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:26:41,639 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:26:41,639 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:26:41,639 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-10-17 10:26:41,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2022-10-17 10:26:41,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:41,659 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:26:41,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:41,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891388d0-c90f-40d5-b191-2ca7b4ef844c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:41,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:26:41,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:42,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 10:26:42,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:26:42,313 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2022-10-17 10:26:42,313 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:42,717 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Result 381 states and 482 transitions. Complement of second has 28 states. [2022-10-17 10:26:42,718 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 [2022-10-17 10:26:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 52 transitions. [2022-10-17 10:26:42,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 52 transitions. Stem has 54 letters. Loop has 39 letters. [2022-10-17 10:26:42,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:42,720 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:42,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:26:42,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:43,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 10:26:43,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:26:43,418 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 11 loop predicates [2022-10-17 10:26:43,418 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:43,819 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Result 381 states and 482 transitions. Complement of second has 28 states. [2022-10-17 10:26:43,820 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 [2022-10-17 10:26:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 52 transitions. [2022-10-17 10:26:43,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 52 transitions. Stem has 54 letters. Loop has 39 letters. [2022-10-17 10:26:43,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:43,821 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:43,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:43,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:26:43,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:44,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 10:26:44,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:26:44,449 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2022-10-17 10:26:44,449 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:44,847 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Result 342 states and 430 transitions. Complement of second has 30 states. [2022-10-17 10:26:44,847 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 [2022-10-17 10:26:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-10-17 10:26:44,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 54 letters. Loop has 39 letters. [2022-10-17 10:26:44,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:44,850 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:44,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:26:44,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:45,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 10:26:45,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:26:45,515 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 11 loop predicates [2022-10-17 10:26:45,515 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:45,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 224 states and 286 transitions. cyclomatic complexity: 64. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Result 342 states and 430 transitions. Complement of second has 30 states. [2022-10-17 10:26:45,896 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 [2022-10-17 10:26:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-17 10:26:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-10-17 10:26:45,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 54 letters. Loop has 39 letters. [2022-10-17 10:26:45,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:26:45,899 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:26:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier