./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8 --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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- 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-2329fc7 [2022-12-13 20:16:43,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:16:43,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:16:43,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:16:43,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:16:43,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:16:43,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:16:43,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:16:43,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:16:43,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:16:43,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:16:43,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:16:43,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:16:43,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:16:43,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:16:43,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:16:43,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:16:43,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:16:43,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:16:43,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:16:43,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:16:43,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:16:43,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:16:43,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:16:43,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:16:43,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:16:43,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:16:43,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:16:43,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:16:43,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:16:43,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:16:43,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:16:43,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:16:43,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:16:43,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:16:43,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:16:43,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:16:43,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:16:43,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:16:43,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:16:43,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:16:43,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 20:16:43,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:16:43,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:16:43,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:16:43,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:16:43,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:16:43,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:16:43,879 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:16:43,879 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 20:16:43,879 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 20:16:43,879 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 20:16:43,879 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 20:16:43,879 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 20:16:43,879 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 20:16:43,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:16:43,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:16:43,881 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 20:16:43,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:16:43,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 20:16:43,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:16:43,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:16:43,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:16:43,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:16:43,882 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 20:16:43,882 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_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2022-12-13 20:16:44,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:16:44,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:16:44,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:16:44,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:16:44,086 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:16:44,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-12-13 20:16:46,695 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:16:46,828 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:16:46,828 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-12-13 20:16:46,832 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/data/fd0b8825a/7dc8b873d8464363bec33094a5204dbf/FLAG4ecf10691 [2022-12-13 20:16:46,843 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/data/fd0b8825a/7dc8b873d8464363bec33094a5204dbf [2022-12-13 20:16:46,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:16:46,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:16:46,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:16:46,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:16:46,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:16:46,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:46,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ba0b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46, skipping insertion in model container [2022-12-13 20:16:46,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:46,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:16:46,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:16:46,964 WARN L237 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_44eb2b3a-2497-426b-b7a5-359a78a63db8/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-12-13 20:16:46,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:16:46,973 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:16:46,982 WARN L237 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_44eb2b3a-2497-426b-b7a5-359a78a63db8/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-12-13 20:16:46,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:16:46,992 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:16:46,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46 WrapperNode [2022-12-13 20:16:46,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:16:46,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:16:46,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:16:46,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:16:46,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,018 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-12-13 20:16:47,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:16:47,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:16:47,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:16:47,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:16:47,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:16:47,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:16:47,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:16:47,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:16:47,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (1/1) ... [2022-12-13 20:16:47,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 20:16:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:16:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:16:47,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:16:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:16:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-12-13 20:16:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-12-13 20:16:47,138 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:16:47,140 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:16:47,208 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:16:47,214 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:16:47,214 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:16:47,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:16:47 BoogieIcfgContainer [2022-12-13 20:16:47,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:16:47,218 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 20:16:47,218 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 20:16:47,221 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 20:16:47,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 20:16:47,222 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 08:16:46" (1/3) ... [2022-12-13 20:16:47,223 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31bc37f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 08:16:47, skipping insertion in model container [2022-12-13 20:16:47,223 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 20:16:47,223 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:46" (2/3) ... [2022-12-13 20:16:47,223 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31bc37f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 08:16:47, skipping insertion in model container [2022-12-13 20:16:47,223 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 20:16:47,223 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:16:47" (3/3) ... [2022-12-13 20:16:47,224 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2022-12-13 20:16:47,263 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 20:16:47,263 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 20:16:47,263 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 20:16:47,263 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 20:16:47,263 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 20:16:47,263 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 20:16:47,264 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 20:16:47,264 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 20:16:47,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 20:16:47,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 20:16:47,282 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:16:47,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:16:47,287 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 20:16:47,287 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 20:16:47,287 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 20:16:47,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 20:16:47,289 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 20:16:47,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:16:47,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:16:47,290 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 20:16:47,290 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 20:16:47,295 INFO L748 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2022-12-13 20:16:47,296 INFO L750 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2022-12-13 20:16:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-12-13 20:16:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:47,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475643196] [2022-12-13 20:16:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:47,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:16:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:47,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:16:47,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-12-13 20:16:47,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:47,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722326779] [2022-12-13 20:16:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:47,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:47,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:16:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:47,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:16:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-12-13 20:16:47,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:47,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856235978] [2022-12-13 20:16:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:47,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:47,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:16:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:47,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:16:47,516 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:47,517 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:47,517 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:47,517 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:47,517 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:16:47,517 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,517 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:47,517 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:47,517 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-12-13 20:16:47,517 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:47,518 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:47,528 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,536 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,539 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,541 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,548 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,587 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:47,587 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:16:47,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 20:16:47,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:47,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:47,608 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:47,608 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:47,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:47,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 20:16:47,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:47,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:47,627 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:47,627 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:47,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 20:16:47,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 20:16:47,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:47,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:47,645 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:47,645 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:47,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 20:16:47,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 20:16:47,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:47,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:47,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 20:16:47,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 20:16:47,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:16:47,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:47,727 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:16:47,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 20:16:47,731 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:47,731 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:47,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:47,731 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:47,731 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:16:47,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:47,732 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:47,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-12-13 20:16:47,732 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:47,732 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:47,733 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,735 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,746 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:47,780 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:47,784 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:16:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 20:16:47,789 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 [2022-12-13 20:16:47,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:47,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:47,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:47,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:47,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:47,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:47,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:47,804 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:47,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 20:16:47,810 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 [2022-12-13 20:16:47,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:47,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:47,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:47,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:47,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:47,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:47,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:47,823 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:47,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 20:16:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 20:16:47,829 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 [2022-12-13 20:16:47,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:47,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:47,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:47,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:47,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:47,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:47,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:47,842 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:47,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:47,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 20:16:47,848 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 [2022-12-13 20:16:47,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:47,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:47,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:47,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:47,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:47,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:47,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:47,862 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:16:47,866 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 20:16:47,866 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 20:16:47,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:47,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:47,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 20:16:47,905 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:16:47,905 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:16:47,905 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:16:47,906 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-12-13 20:16:47,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:47,911 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:16:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:47,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:16:47,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:47,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:16:47,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:48,061 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-12-13 20:16:48,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:48,155 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-12-13 20:16:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-12-13 20:16:48,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-12-13 20:16:48,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:48,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-12-13 20:16:48,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:48,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-12-13 20:16:48,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:48,166 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-12-13 20:16:48,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 20:16:48,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-12-13 20:16:48,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-12-13 20:16:48,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 20:16:48,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-12-13 20:16:48,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:48,175 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-12-13 20:16:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-12-13 20:16:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-12-13 20:16:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:16:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-12-13 20:16:48,194 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 20:16:48,195 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 20:16:48,195 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 20:16:48,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-12-13 20:16:48,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 20:16:48,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:16:48,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:16:48,196 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:48,196 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:48,196 INFO L748 eck$LassoCheckResult]: Stem: 136#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 137#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 122#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 121#$Ultimate##0 ~n := #in~n; 123#L8 assume !(~n < 1); 135#L10 assume !(1 == ~n); 125#L13 call #t~ret4 := fibo(~n - 1);< 124#$Ultimate##0 ~n := #in~n; 126#L8 assume ~n < 1;#res := 0; 132#fiboFINAL assume true; 133#fiboEXIT >#33#return; 128#L13-1 [2022-12-13 20:16:48,196 INFO L750 eck$LassoCheckResult]: Loop: 128#L13-1 call #t~ret5 := fibo(~n - 2);< 129#$Ultimate##0 ~n := #in~n; 139#L8 assume !(~n < 1); 140#L10 assume !(1 == ~n); 127#L13 call #t~ret4 := fibo(~n - 1);< 129#$Ultimate##0 ~n := #in~n; 139#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 138#fiboEXIT >#33#return; 128#L13-1 [2022-12-13 20:16:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-12-13 20:16:48,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:48,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936075544] [2022-12-13 20:16:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:48,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 20:16:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:16:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936075544] [2022-12-13 20:16:48,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936075544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:48,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:48,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:16:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27222107] [2022-12-13 20:16:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:48,292 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 20:16:48,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-12-13 20:16:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:48,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950309804] [2022-12-13 20:16:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:16:48,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:16:48,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:48,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950309804] [2022-12-13 20:16:48,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950309804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:48,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:48,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:16:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883083077] [2022-12-13 20:16:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:48,365 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 20:16:48,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:48,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:16:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:16:48,369 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:16:48,417 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-13 20:16:48,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-12-13 20:16:48,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 20:16:48,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-12-13 20:16:48,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-12-13 20:16:48,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-12-13 20:16:48,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-12-13 20:16:48,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:48,420 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 20:16:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-12-13 20:16:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-13 20:16:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 20:16:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-12-13 20:16:48,422 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 20:16:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:16:48,423 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 20:16:48,423 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 20:16:48,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-12-13 20:16:48,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 20:16:48,424 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:16:48,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:16:48,424 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:48,424 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:48,424 INFO L748 eck$LassoCheckResult]: Stem: 208#$Ultimate##0 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(12, 2);call #Ultimate.allocInit(12, 3); 209#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 202#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 205#$Ultimate##0 ~n := #in~n; 200#L8 assume !(~n < 1); 211#L10 assume !(1 == ~n); 199#L13 call #t~ret4 := fibo(~n - 1);< 198#$Ultimate##0 ~n := #in~n; 201#L8 assume !(~n < 1); 217#L10 assume 1 == ~n;#res := 1; 216#fiboFINAL assume true; 215#fiboEXIT >#33#return; 195#L13-1 [2022-12-13 20:16:48,424 INFO L750 eck$LassoCheckResult]: Loop: 195#L13-1 call #t~ret5 := fibo(~n - 2);< 194#$Ultimate##0 ~n := #in~n; 197#L8 assume !(~n < 1); 210#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 194#$Ultimate##0 ~n := #in~n; 197#L8 assume !(~n < 1); 210#L10 assume 1 == ~n;#res := 1; 212#fiboFINAL assume true; 213#fiboEXIT >#33#return; 195#L13-1 [2022-12-13 20:16:48,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-12-13 20:16:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:48,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378319334] [2022-12-13 20:16:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 20:16:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:48,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:48,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378319334] [2022-12-13 20:16:48,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378319334] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:16:48,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100431597] [2022-12-13 20:16:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:48,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:16:48,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:48,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:16:48,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:16:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:48,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:16:48,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:48,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:16:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:48,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100431597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:16:48,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:16:48,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-13 20:16:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840140993] [2022-12-13 20:16:48,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:16:48,621 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 20:16:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-12-13 20:16:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:48,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163001181] [2022-12-13 20:16:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:48,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:16:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:48,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:16:48,721 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:48,721 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:48,721 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:48,721 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:48,721 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:16:48,721 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:48,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:48,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:48,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-12-13 20:16:48,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:48,722 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:48,722 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:48,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:48,726 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:48,732 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:48,760 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:48,760 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:16:48,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:48,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:48,761 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:48,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 20:16:48,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:48,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:48,775 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:48,775 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:48,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 20:16:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:48,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:48,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:48,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 20:16:48,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:48,781 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:48,792 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:48,792 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:48,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 20:16:48,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:48,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:48,796 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:48,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 20:16:48,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:48,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:48,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 20:16:48,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:48,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:48,813 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:48,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 20:16:48,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:16:48,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:49,385 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:16:49,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 20:16:49,389 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:49,389 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:49,389 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:49,389 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:49,389 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:16:49,389 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:49,389 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:49,389 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:49,389 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-12-13 20:16:49,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:49,390 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:49,390 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:49,393 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:49,394 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:49,398 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:49,416 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:49,416 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:16:49,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:49,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:49,417 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:49,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 20:16:49,419 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 [2022-12-13 20:16:49,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:49,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:49,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:49,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:49,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:49,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:49,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:49,432 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:49,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 20:16:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:49,435 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:49,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-12-13 20:16:49,437 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 [2022-12-13 20:16:49,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:49,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:49,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:49,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:49,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:49,448 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:49,448 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:49,450 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:49,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:49,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:49,453 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:49,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 20:16:49,455 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 [2022-12-13 20:16:49,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:49,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:49,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:49,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:49,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:49,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:49,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:49,469 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:16:49,472 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 20:16:49,472 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 20:16:49,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:49,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:49,473 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:49,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 20:16:49,475 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:16:49,475 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:16:49,475 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:16:49,475 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-12-13 20:16:49,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:49,479 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:16:49,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:49,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:16:49,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:49,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 20:16:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:49,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:16:49,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:49,637 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-12-13 20:16:49,637 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:16:49,782 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-12-13 20:16:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:16:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-12-13 20:16:49,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-12-13 20:16:49,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:49,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-12-13 20:16:49,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:49,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-12-13 20:16:49,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:49,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-12-13 20:16:49,790 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-12-13 20:16:49,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-12-13 20:16:49,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-12-13 20:16:49,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-12-13 20:16:49,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-12-13 20:16:49,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:49,795 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-12-13 20:16:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-12-13 20:16:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-12-13 20:16:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-12-13 20:16:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-12-13 20:16:49,806 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-12-13 20:16:49,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:49,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:16:49,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:16:49,807 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:16:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:16:49,879 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-12-13 20:16:49,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-12-13 20:16:49,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-12-13 20:16:49,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-12-13 20:16:49,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-12-13 20:16:49,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-12-13 20:16:49,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-12-13 20:16:49,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:49,886 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-12-13 20:16:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-12-13 20:16:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-12-13 20:16:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-12-13 20:16:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-12-13 20:16:49,894 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-12-13 20:16:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:16:49,895 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-12-13 20:16:49,895 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 20:16:49,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-12-13 20:16:49,897 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-12-13 20:16:49,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:16:49,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:16:49,897 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:49,898 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:49,898 INFO L748 eck$LassoCheckResult]: Stem: 818#$Ultimate##0 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(12, 2);call #Ultimate.allocInit(12, 3); 819#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 803#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#$Ultimate##0 ~n := #in~n; 822#L8 assume !(~n < 1); 823#L10 assume !(1 == ~n); 791#L13 call #t~ret4 := fibo(~n - 1);< 790#$Ultimate##0 ~n := #in~n; 792#L8 assume !(~n < 1); 829#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 851#L8 assume !(~n < 1); 849#L10 assume !(1 == ~n); 844#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 851#L8 assume !(~n < 1); 849#L10 assume !(1 == ~n); 844#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 852#L8 assume !(~n < 1); 850#L10 assume 1 == ~n;#res := 1; 848#fiboFINAL assume true; 847#fiboEXIT >#33#return; 794#L13-1 call #t~ret5 := fibo(~n - 2);< 845#$Ultimate##0 ~n := #in~n; 820#L8 assume ~n < 1;#res := 0; 821#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 825#L13-1 [2022-12-13 20:16:49,898 INFO L750 eck$LassoCheckResult]: Loop: 825#L13-1 call #t~ret5 := fibo(~n - 2);< 800#$Ultimate##0 ~n := #in~n; 882#L8 assume !(~n < 1); 824#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 800#$Ultimate##0 ~n := #in~n; 882#L8 assume !(~n < 1); 824#L10 assume 1 == ~n;#res := 1; 828#fiboFINAL assume true; 874#fiboEXIT >#33#return; 825#L13-1 [2022-12-13 20:16:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-12-13 20:16:49,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:49,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385578137] [2022-12-13 20:16:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:49,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:16:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 20:16:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 20:16:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:16:50,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:50,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385578137] [2022-12-13 20:16:50,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385578137] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:16:50,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696524180] [2022-12-13 20:16:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:50,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:16:50,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:50,040 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:16:50,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 20:16:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:16:50,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:16:50,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:16:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:16:50,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696524180] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:16:50,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:16:50,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-12-13 20:16:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782068357] [2022-12-13 20:16:50,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:16:50,299 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 20:16:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-12-13 20:16:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:50,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598188283] [2022-12-13 20:16:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:50,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:16:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:50,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:16:50,382 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:50,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:50,383 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:50,383 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:50,383 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:16:50,383 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:50,383 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:50,383 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:50,383 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-12-13 20:16:50,383 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:50,383 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:50,384 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:50,386 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:50,391 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:50,392 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:50,417 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:50,417 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:16:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:50,418 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:50,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 20:16:50,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:50,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:50,433 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:50,433 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:50,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 20:16:50,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:50,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:50,437 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:50,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 20:16:50,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:50,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:50,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 20:16:50,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:50,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:50,455 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:50,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 20:16:50,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:16:50,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:51,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:16:51,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 20:16:51,026 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:51,026 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:51,027 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:51,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:51,027 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:16:51,027 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:51,027 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:51,027 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:51,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-12-13 20:16:51,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:51,027 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:51,028 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:51,031 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:51,039 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:51,040 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:51,061 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:51,061 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:16:51,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:51,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:51,062 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:51,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 20:16:51,064 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 [2022-12-13 20:16:51,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:51,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:51,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:51,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:51,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:51,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:51,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:51,077 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:51,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:51,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:51,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:51,080 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:51,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 20:16:51,082 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 [2022-12-13 20:16:51,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:51,092 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:51,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:51,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:51,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:51,093 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:51,093 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:51,096 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:16:51,097 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 20:16:51,097 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 20:16:51,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:51,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:51,099 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:51,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 20:16:51,100 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:16:51,100 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:16:51,100 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:16:51,101 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-12-13 20:16:51,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 20:16:51,103 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:16:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:16:51,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:51,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:16:51,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:51,369 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-12-13 20:16:51,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:16:51,492 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-12-13 20:16:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:16:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-12-13 20:16:51,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-12-13 20:16:51,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:51,494 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:16:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:51,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:16:51,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:51,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:16:51,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-12-13 20:16:51,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:51,735 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-12-13 20:16:51,735 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:16:51,840 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-12-13 20:16:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:16:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-12-13 20:16:51,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-12-13 20:16:51,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:51,842 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:16:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:51,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:16:51,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:52,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:16:52,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:52,076 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 6 loop predicates [2022-12-13 20:16:52,077 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:16:52,228 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-12-13 20:16:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:16:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-12-13 20:16:52,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-12-13 20:16:52,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:52,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-12-13 20:16:52,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:52,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-12-13 20:16:52,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:52,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-12-13 20:16:52,245 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-12-13 20:16:52,254 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-12-13 20:16:52,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-12-13 20:16:52,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-12-13 20:16:52,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-12-13 20:16:52,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:52,256 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-12-13 20:16:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-12-13 20:16:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-12-13 20:16:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-12-13 20:16:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-12-13 20:16:52,285 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-12-13 20:16:52,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:52,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 20:16:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:16:52,286 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 20:16:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:16:52,587 INFO L93 Difference]: Finished difference Result 658 states and 956 transitions. [2022-12-13 20:16:52,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 658 states and 956 transitions. [2022-12-13 20:16:52,595 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-12-13 20:16:52,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 658 states to 633 states and 920 transitions. [2022-12-13 20:16:52,605 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 276 [2022-12-13 20:16:52,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2022-12-13 20:16:52,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 633 states and 920 transitions. [2022-12-13 20:16:52,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:52,606 INFO L218 hiAutomatonCegarLoop]: Abstraction has 633 states and 920 transitions. [2022-12-13 20:16:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states and 920 transitions. [2022-12-13 20:16:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 600. [2022-12-13 20:16:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 367 states have (on average 1.1662125340599454) internal successors, (428), 386 states have internal predecessors, (428), 144 states have call successors, (158), 73 states have call predecessors, (158), 89 states have return successors, (293), 140 states have call predecessors, (293), 135 states have call successors, (293) [2022-12-13 20:16:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 879 transitions. [2022-12-13 20:16:52,632 INFO L240 hiAutomatonCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-12-13 20:16:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 20:16:52,633 INFO L428 stractBuchiCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-12-13 20:16:52,633 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 20:16:52,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 600 states and 879 transitions. [2022-12-13 20:16:52,637 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-12-13 20:16:52,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:16:52,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:16:52,638 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:52,638 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 20:16:52,639 INFO L748 eck$LassoCheckResult]: Stem: 4149#$Ultimate##0 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(12, 2);call #Ultimate.allocInit(12, 3); 4150#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4113#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4112#$Ultimate##0 ~n := #in~n; 4114#L8 assume !(~n < 1); 4196#L10 assume !(1 == ~n); 4192#L13 call #t~ret4 := fibo(~n - 1);< 4195#$Ultimate##0 ~n := #in~n; 4194#L8 assume !(~n < 1); 4193#L10 assume !(1 == ~n); 4188#L13 call #t~ret4 := fibo(~n - 1);< 4191#$Ultimate##0 ~n := #in~n; 4190#L8 assume !(~n < 1); 4189#L10 assume !(1 == ~n); 4184#L13 call #t~ret4 := fibo(~n - 1);< 4187#$Ultimate##0 ~n := #in~n; 4186#L8 assume !(~n < 1); 4185#L10 assume !(1 == ~n); 4180#L13 call #t~ret4 := fibo(~n - 1);< 4183#$Ultimate##0 ~n := #in~n; 4182#L8 assume !(~n < 1); 4181#L10 assume !(1 == ~n); 4177#L13 call #t~ret4 := fibo(~n - 1);< 4179#$Ultimate##0 ~n := #in~n; 4178#L8 assume !(~n < 1); 4176#L10 assume !(1 == ~n); 4173#L13 call #t~ret4 := fibo(~n - 1);< 4171#$Ultimate##0 ~n := #in~n; 4174#L8 assume !(~n < 1); 4222#L10 assume !(1 == ~n); 4172#L13 call #t~ret4 := fibo(~n - 1);< 4171#$Ultimate##0 ~n := #in~n; 4175#L8 assume !(~n < 1); 4325#L10 assume 1 == ~n;#res := 1; 4323#fiboFINAL assume true; 4322#fiboEXIT >#33#return; 4290#L13-1 call #t~ret5 := fibo(~n - 2);< 4292#$Ultimate##0 ~n := #in~n; 4510#L8 assume !(~n < 1); 4501#L10 assume !(1 == ~n); 4502#L13 call #t~ret4 := fibo(~n - 1);< 4513#$Ultimate##0 ~n := #in~n; 4573#L8 assume !(~n < 1); 4517#L10 assume !(1 == ~n); 4518#L13 call #t~ret4 := fibo(~n - 1);< 4532#$Ultimate##0 [2022-12-13 20:16:52,639 INFO L750 eck$LassoCheckResult]: Loop: 4532#$Ultimate##0 ~n := #in~n; 4619#L8 assume !(~n < 1); 4600#L10 assume !(1 == ~n); 4528#L13 call #t~ret4 := fibo(~n - 1);< 4532#$Ultimate##0 [2022-12-13 20:16:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1242269160, now seen corresponding path program 1 times [2022-12-13 20:16:52,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987380127] [2022-12-13 20:16:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:52,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 20:16:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:16:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987380127] [2022-12-13 20:16:52,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987380127] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:16:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155540019] [2022-12-13 20:16:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:52,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:16:52,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:52,828 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:16:52,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 20:16:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:52,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:16:52,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:16:52,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:16:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:16:53,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155540019] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:16:53,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:16:53,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 24 [2022-12-13 20:16:53,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504982712] [2022-12-13 20:16:53,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:16:53,057 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 20:16:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-12-13 20:16:53,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:53,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244523010] [2022-12-13 20:16:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:53,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:16:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:53,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:16:53,079 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:53,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:53,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:53,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:53,079 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:16:53,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:53,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:53,079 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-12-13 20:16:53,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:53,079 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:53,079 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,081 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,082 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,083 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,086 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,104 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:53,105 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:16:53,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,105 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 20:16:53,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:53,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:53,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:53,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:53,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-12-13 20:16:53,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,122 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-12-13 20:16:53,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:53,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:53,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:53,138 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:53,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-12-13 20:16:53,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,142 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 20:16:53,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:53,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:53,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:53,155 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:53,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-12-13 20:16:53,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,158 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 20:16:53,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:53,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:53,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-12-13 20:16:53,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,175 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-12-13 20:16:53,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:16:53,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:53,233 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:16:53,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-12-13 20:16:53,236 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:53,236 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:53,236 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:53,236 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:53,236 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:16:53,236 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,236 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:53,236 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:53,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-12-13 20:16:53,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:53,236 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:53,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,238 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,240 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,241 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,242 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:53,269 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:53,269 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:16:53,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,270 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 20:16:53,272 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 20:16:53,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:53,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:53,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:53,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:53,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:53,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:53,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:53,284 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:53,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:53,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,287 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 20:16:53,288 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 [2022-12-13 20:16:53,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:53,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:53,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:53,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:53,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:53,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:53,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:53,300 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:53,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-12-13 20:16:53,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,304 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 20:16:53,306 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 [2022-12-13 20:16:53,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:53,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:53,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:53,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:53,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:53,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:53,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:53,318 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:53,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-12-13 20:16:53,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,321 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 20:16:53,323 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 [2022-12-13 20:16:53,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:53,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:53,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:53,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:53,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:53,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:53,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:53,335 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:53,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-12-13 20:16:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,338 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 20:16:53,340 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 [2022-12-13 20:16:53,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:53,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:53,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:53,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:53,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:53,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:53,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:53,353 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:16:53,356 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 20:16:53,356 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 20:16:53,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:53,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:53,357 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:53,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-12-13 20:16:53,359 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:16:53,359 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:16:53,359 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:16:53,359 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-12-13 20:16:53,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-12-13 20:16:53,362 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:16:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 20:16:53,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:53,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:16:53,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:53,523 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-12-13 20:16:53,523 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:53,576 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-12-13 20:16:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:53,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-12-13 20:16:53,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-12-13 20:16:53,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:53,578 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:16:53,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:53,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 20:16:53,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:53,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:16:53,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:53,741 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-12-13 20:16:53,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:53,791 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-12-13 20:16:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-12-13 20:16:53,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-12-13 20:16:53,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:53,792 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:16:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:53,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 20:16:53,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:53,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-12-13 20:16:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:53,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:16:53,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:53,959 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 3 loop predicates [2022-12-13 20:16:53,959 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:54,014 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 811 states and 1113 transitions. Complement of second has 14 states. [2022-12-13 20:16:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-12-13 20:16:54,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2022-12-13 20:16:54,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:54,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2022-12-13 20:16:54,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:54,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2022-12-13 20:16:54,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:54,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 811 states and 1113 transitions. [2022-12-13 20:16:54,021 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-12-13 20:16:54,026 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 811 states to 662 states and 952 transitions. [2022-12-13 20:16:54,026 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 235 [2022-12-13 20:16:54,026 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2022-12-13 20:16:54,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 662 states and 952 transitions. [2022-12-13 20:16:54,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:54,027 INFO L218 hiAutomatonCegarLoop]: Abstraction has 662 states and 952 transitions. [2022-12-13 20:16:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states and 952 transitions. [2022-12-13 20:16:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 632. [2022-12-13 20:16:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 394 states have (on average 1.1548223350253808) internal successors, (455), 418 states have internal predecessors, (455), 144 states have call successors, (158), 73 states have call predecessors, (158), 94 states have return successors, (303), 140 states have call predecessors, (303), 135 states have call successors, (303) [2022-12-13 20:16:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 916 transitions. [2022-12-13 20:16:54,042 INFO L240 hiAutomatonCegarLoop]: Abstraction has 632 states and 916 transitions. [2022-12-13 20:16:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 20:16:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-12-13 20:16:54,043 INFO L87 Difference]: Start difference. First operand 632 states and 916 transitions. Second operand has 24 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 16 states have internal predecessors, (40), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:16:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:16:54,314 INFO L93 Difference]: Finished difference Result 901 states and 1327 transitions. [2022-12-13 20:16:54,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 901 states and 1327 transitions. [2022-12-13 20:16:54,320 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-12-13 20:16:54,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 901 states to 858 states and 1265 transitions. [2022-12-13 20:16:54,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2022-12-13 20:16:54,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 306 [2022-12-13 20:16:54,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 858 states and 1265 transitions. [2022-12-13 20:16:54,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:54,328 INFO L218 hiAutomatonCegarLoop]: Abstraction has 858 states and 1265 transitions. [2022-12-13 20:16:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states and 1265 transitions. [2022-12-13 20:16:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 789. [2022-12-13 20:16:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 491 states have (on average 1.1344195519348268) internal successors, (557), 520 states have internal predecessors, (557), 190 states have call successors, (206), 98 states have call predecessors, (206), 108 states have return successors, (366), 170 states have call predecessors, (366), 178 states have call successors, (366) [2022-12-13 20:16:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1129 transitions. [2022-12-13 20:16:54,346 INFO L240 hiAutomatonCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-12-13 20:16:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 20:16:54,346 INFO L428 stractBuchiCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-12-13 20:16:54,346 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 20:16:54,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 789 states and 1129 transitions. [2022-12-13 20:16:54,350 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-12-13 20:16:54,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:16:54,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:16:54,350 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 13, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:54,350 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 20:16:54,351 INFO L748 eck$LassoCheckResult]: Stem: 9154#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 9155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 9141#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 9142#$Ultimate##0 ~n := #in~n; 9385#L8 assume !(~n < 1); 9382#L10 assume !(1 == ~n); 9350#L13 call #t~ret4 := fibo(~n - 1);< 9377#$Ultimate##0 ~n := #in~n; 9375#L8 assume !(~n < 1); 9374#L10 assume !(1 == ~n); 9339#L13 call #t~ret4 := fibo(~n - 1);< 9355#$Ultimate##0 ~n := #in~n; 9391#L8 assume !(~n < 1); 9389#L10 assume !(1 == ~n); 9344#L13 call #t~ret4 := fibo(~n - 1);< 9346#$Ultimate##0 ~n := #in~n; 9435#L8 assume !(~n < 1); 9433#L10 assume !(1 == ~n); 9417#L13 call #t~ret4 := fibo(~n - 1);< 9429#$Ultimate##0 ~n := #in~n; 9421#L8 assume !(~n < 1); 9419#L10 assume !(1 == ~n); 9365#L13 call #t~ret4 := fibo(~n - 1);< 9418#$Ultimate##0 ~n := #in~n; 9499#L8 assume !(~n < 1); 9497#L10 assume !(1 == ~n); 9168#L13 call #t~ret4 := fibo(~n - 1);< 9493#$Ultimate##0 ~n := #in~n; 9481#L8 assume !(~n < 1); 9480#L10 assume !(1 == ~n); 9426#L13 call #t~ret4 := fibo(~n - 1);< 9479#$Ultimate##0 ~n := #in~n; 9498#L8 assume !(~n < 1); 9496#L10 assume !(1 == ~n); 9490#L13 call #t~ret4 := fibo(~n - 1);< 9495#$Ultimate##0 ~n := #in~n; 9656#L8 assume !(~n < 1); 9655#L10 assume !(1 == ~n); 9491#L13 call #t~ret4 := fibo(~n - 1);< 9495#$Ultimate##0 ~n := #in~n; 9657#L8 assume !(~n < 1); 9786#L10 assume 1 == ~n;#res := 1; 9785#fiboFINAL assume true; 9759#fiboEXIT >#33#return; 9150#L13-1 call #t~ret5 := fibo(~n - 2);< 9758#$Ultimate##0 ~n := #in~n; 9779#L8 assume !(~n < 1); 9765#L10 assume !(1 == ~n); 9767#L13 call #t~ret4 := fibo(~n - 1);< 9782#$Ultimate##0 ~n := #in~n; 9884#L8 assume !(~n < 1); 9890#L10 assume !(1 == ~n); 9163#L13 call #t~ret4 := fibo(~n - 1);< 9173#$Ultimate##0 ~n := #in~n; 9174#L8 assume !(~n < 1); 9896#L10 assume !(1 == ~n); 9164#L13 [2022-12-13 20:16:54,351 INFO L750 eck$LassoCheckResult]: Loop: 9164#L13 call #t~ret4 := fibo(~n - 1);< 9173#$Ultimate##0 ~n := #in~n; 9174#L8 assume !(~n < 1); 9896#L10 assume !(1 == ~n); 9164#L13 [2022-12-13 20:16:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash -486527177, now seen corresponding path program 2 times [2022-12-13 20:16:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:54,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358654312] [2022-12-13 20:16:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:16:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:16:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358654312] [2022-12-13 20:16:54,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358654312] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:16:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087183235] [2022-12-13 20:16:54,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:16:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:16:54,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:54,576 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:16:54,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 20:16:54,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:16:54,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:16:54,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 20:16:54,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:16:54,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:16:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:16:54,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087183235] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:16:54,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:16:54,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 23 [2022-12-13 20:16:54,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661424706] [2022-12-13 20:16:54,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:16:54,834 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 20:16:54,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:54,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1893846, now seen corresponding path program 3 times [2022-12-13 20:16:54,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:54,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696384631] [2022-12-13 20:16:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:54,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:54,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:16:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:16:54,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:16:54,874 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:54,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:54,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:54,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:54,874 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:16:54,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:54,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:54,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:54,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-12-13 20:16:54,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:54,875 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:54,875 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:54,876 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:54,882 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:54,883 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:54,916 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:54,916 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:16:54,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:54,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:54,917 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:54,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-12-13 20:16:54,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:54,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:54,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:16:54,931 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:16:54,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-12-13 20:16:54,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:54,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:54,934 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:54,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-12-13 20:16:54,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:16:54,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:54,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-12-13 20:16:54,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:54,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:54,960 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:54,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-12-13 20:16:54,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:16:54,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:16:55,687 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:16:55,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-12-13 20:16:55,691 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:16:55,691 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:16:55,691 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:16:55,691 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:16:55,691 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:16:55,691 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:55,691 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:16:55,691 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:16:55,691 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-12-13 20:16:55,691 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:16:55,691 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:16:55,691 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:55,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:55,694 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:55,695 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:16:55,719 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:16:55,719 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:16:55,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:55,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:55,720 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:55,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-12-13 20:16:55,722 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 [2022-12-13 20:16:55,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:55,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:55,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:55,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:55,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:55,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:55,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:55,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:55,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-12-13 20:16:55,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:55,737 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:55,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-12-13 20:16:55,739 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 [2022-12-13 20:16:55,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:55,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:55,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:55,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:55,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:55,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:55,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:55,751 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:55,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:55,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:55,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:55,754 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:55,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-12-13 20:16:55,756 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 [2022-12-13 20:16:55,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:55,766 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:55,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:55,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:55,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:55,767 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:55,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:55,768 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:16:55,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:55,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:55,771 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:55,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-12-13 20:16:55,773 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 [2022-12-13 20:16:55,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:16:55,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:16:55,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:16:55,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:16:55,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:16:55,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:16:55,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:16:55,787 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:16:55,789 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 20:16:55,789 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 20:16:55,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:16:55,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:55,790 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:55,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-12-13 20:16:55,792 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:16:55,792 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:16:55,792 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:16:55,792 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-12-13 20:16:55,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:55,794 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:16:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:55,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 20:16:55,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:55,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-12-13 20:16:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:55,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:16:55,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:55,954 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-12-13 20:16:55,955 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:55,996 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 816 states and 1157 transitions. Complement of second has 18 states. [2022-12-13 20:16:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2022-12-13 20:16:55,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 56 letters. Loop has 4 letters. [2022-12-13 20:16:55,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:55,997 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:16:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:56,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 20:16:56,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:56,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:16:56,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:16:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:56,150 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-12-13 20:16:56,150 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:56,209 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 1046 states and 1479 transitions. Complement of second has 22 states. [2022-12-13 20:16:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-12-13 20:16:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-12-13 20:16:56,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 4 letters. [2022-12-13 20:16:56,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:56,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 60 letters. Loop has 4 letters. [2022-12-13 20:16:56,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:56,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 8 letters. [2022-12-13 20:16:56,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:16:56,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1046 states and 1479 transitions. [2022-12-13 20:16:56,219 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-12-13 20:16:56,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1046 states to 967 states and 1395 transitions. [2022-12-13 20:16:56,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 306 [2022-12-13 20:16:56,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 334 [2022-12-13 20:16:56,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 967 states and 1395 transitions. [2022-12-13 20:16:56,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:16:56,227 INFO L218 hiAutomatonCegarLoop]: Abstraction has 967 states and 1395 transitions. [2022-12-13 20:16:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states and 1395 transitions. [2022-12-13 20:16:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 954. [2022-12-13 20:16:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 601 states have (on average 1.1231281198003327) internal successors, (675), 638 states have internal predecessors, (675), 223 states have call successors, (257), 125 states have call predecessors, (257), 130 states have return successors, (446), 190 states have call predecessors, (446), 211 states have call successors, (446) [2022-12-13 20:16:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1378 transitions. [2022-12-13 20:16:56,246 INFO L240 hiAutomatonCegarLoop]: Abstraction has 954 states and 1378 transitions. [2022-12-13 20:16:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:56,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 20:16:56,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:16:56,246 INFO L87 Difference]: Start difference. First operand 954 states and 1378 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 13 states have internal predecessors, (38), 11 states have call successors, (12), 12 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 20:16:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:16:56,504 INFO L93 Difference]: Finished difference Result 554 states and 654 transitions. [2022-12-13 20:16:56,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 554 states and 654 transitions. [2022-12-13 20:16:56,509 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 20:16:56,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 554 states to 0 states and 0 transitions. [2022-12-13 20:16:56,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 20:16:56,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 20:16:56,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 20:16:56,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:56,510 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:16:56,510 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:16:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:16:56,511 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:16:56,511 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 20:16:56,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 20:16:56,511 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 20:16:56,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 20:16:56,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 08:16:56 BoogieIcfgContainer [2022-12-13 20:16:56,516 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 20:16:56,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:16:56,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:16:56,516 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:16:56,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:16:47" (3/4) ... [2022-12-13 20:16:56,518 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:16:56,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:16:56,519 INFO L158 Benchmark]: Toolchain (without parser) took 9672.67ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 105.2MB in the beginning and 127.8MB in the end (delta: -22.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-12-13 20:16:56,519 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:16:56,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.19ms. Allocated memory is still 138.4MB. Free memory was 104.8MB in the beginning and 95.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 20:16:56,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.76ms. Allocated memory is still 138.4MB. Free memory was 95.2MB in the beginning and 93.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:16:56,519 INFO L158 Benchmark]: Boogie Preprocessor took 14.81ms. Allocated memory is still 138.4MB. Free memory was 93.6MB in the beginning and 92.7MB in the end (delta: 881.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:16:56,519 INFO L158 Benchmark]: RCFGBuilder took 182.29ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 83.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 20:16:56,520 INFO L158 Benchmark]: BuchiAutomizer took 9298.07ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 83.9MB in the beginning and 128.9MB in the end (delta: -44.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:16:56,520 INFO L158 Benchmark]: Witness Printer took 2.47ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 127.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:16:56,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.19ms. Allocated memory is still 138.4MB. Free memory was 104.8MB in the beginning and 95.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.76ms. Allocated memory is still 138.4MB. Free memory was 95.2MB in the beginning and 93.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.81ms. Allocated memory is still 138.4MB. Free memory was 93.6MB in the beginning and 92.7MB in the end (delta: 881.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 182.29ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 83.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9298.07ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 83.9MB in the beginning and 128.9MB in the end (delta: -44.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.47ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 127.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.2s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 5.2s. Construction of modules took 0.7s. Büchi inclusion checks took 3.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 254 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 606 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 520 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1479 IncrementalHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 520 mSolverCounterUnsat, 217 mSDtfsCounter, 1479 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp81 dnf100 smp100 tf110 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 20:16:56,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-13 20:16:56,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 20:16:56,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 20:16:57,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 20:16:57,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44eb2b3a-2497-426b-b7a5-359a78a63db8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE