./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b 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_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN --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 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- 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-6b4ec56 [2022-11-20 10:57:10,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:57:10,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:57:10,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:57:10,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:57:10,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:57:10,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:57:10,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:57:10,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:57:10,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:57:10,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:57:10,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:57:10,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:57:10,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:57:10,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:57:10,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:57:10,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:57:10,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:57:10,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:57:10,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:57:10,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:57:10,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:57:10,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:57:10,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:57:10,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:57:10,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:57:10,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:57:10,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:57:10,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:57:10,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:57:10,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:57:10,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:57:10,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:57:10,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:57:10,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:57:10,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:57:10,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:57:10,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:57:10,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:57:10,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:57:10,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:57:10,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 10:57:11,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:57:11,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:57:11,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:57:11,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:57:11,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:57:11,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:57:11,014 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:57:11,014 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 10:57:11,015 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 10:57:11,015 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 10:57:11,015 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 10:57:11,016 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 10:57:11,016 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 10:57:11,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:57:11,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:57:11,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:57:11,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:57:11,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:57:11,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:57:11,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 10:57:11,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 10:57:11,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 10:57:11,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:57:11,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:57:11,020 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 10:57:11,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:57:11,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 10:57:11,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:57:11,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:57:11,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:57:11,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:57:11,023 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 10:57:11,024 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_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2022-11-20 10:57:11,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:57:11,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:57:11,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:57:11,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:57:11,436 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:57:11,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-11-20 10:57:15,022 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:57:15,238 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:57:15,238 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-11-20 10:57:15,245 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/data/2f17f9881/b3c05e67558e4a5583efb669b7e372c4/FLAGb701604f5 [2022-11-20 10:57:15,264 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/data/2f17f9881/b3c05e67558e4a5583efb669b7e372c4 [2022-11-20 10:57:15,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:57:15,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:57:15,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:15,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:57:15,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:57:15,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600db26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15, skipping insertion in model container [2022-11-20 10:57:15,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:57:15,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:57:15,521 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_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-11-20 10:57:15,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:15,536 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:57:15,557 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_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-11-20 10:57:15,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:15,575 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:57:15,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15 WrapperNode [2022-11-20 10:57:15,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:15,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:15,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:57:15,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:57:15,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,609 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-20 10:57:15,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:15,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:57:15,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:57:15,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:57:15,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:57:15,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:57:15,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:57:15,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:57:15,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (1/1) ... [2022-11-20 10:57:15,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:15,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:15,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:15,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 10:57:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:57:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:57:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-20 10:57:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-20 10:57:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-20 10:57:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-20 10:57:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:57:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:57:15,824 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:57:15,827 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:57:15,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:57:15,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:57:15,969 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:57:15,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:15 BoogieIcfgContainer [2022-11-20 10:57:15,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:57:15,973 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 10:57:15,974 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 10:57:15,979 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 10:57:15,980 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:57:15,980 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:57:15" (1/3) ... [2022-11-20 10:57:15,981 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f60865a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:57:15, skipping insertion in model container [2022-11-20 10:57:15,982 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:57:15,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:15" (2/3) ... [2022-11-20 10:57:15,982 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f60865a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:57:15, skipping insertion in model container [2022-11-20 10:57:15,983 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:57:15,983 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:15" (3/3) ... [2022-11-20 10:57:15,985 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-2.c [2022-11-20 10:57:16,070 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 10:57:16,071 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 10:57:16,071 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 10:57:16,071 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 10:57:16,071 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 10:57:16,071 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 10:57:16,072 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 10:57:16,072 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 10:57:16,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 10:57:16,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:57:16,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:16,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:16,151 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:57:16,152 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:16,152 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 10:57:16,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 10:57:16,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:57:16,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:16,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:16,158 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:57:16,158 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:16,167 INFO L748 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-11-20 10:57:16,168 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-11-20 10:57:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:16,175 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-11-20 10:57:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:16,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114406153] [2022-11-20 10:57:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:16,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:16,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:16,397 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-11-20 10:57:16,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:16,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661647737] [2022-11-20 10:57:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:16,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:16,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:16,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:16,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:16,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-11-20 10:57:16,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:16,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811362373] [2022-11-20 10:57:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:16,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:16,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:16,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:16,910 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:16,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:16,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:16,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:16,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:57:16,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:16,913 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:16,914 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:16,914 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2022-11-20 10:57:16,914 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:16,915 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:16,934 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:16,964 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:16,967 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:16,983 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:16,986 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:16,989 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:16,993 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:16,996 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,074 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:17,075 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:57:17,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 10:57:17,129 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:17,129 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:17,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 10:57:17,188 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:17,188 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:17,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 10:57:17,237 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:17,237 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:17,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 10:57:17,292 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:17,292 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:17,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 10:57:17,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:17,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:17,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 10:57:17,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:17,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:17,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 10:57:17,452 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:17,453 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:17,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:17,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 10:57:17,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-20 10:57:17,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,502 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 10:57:17,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:57:17,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:17,604 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:57:17,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,608 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:17,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:17,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:17,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:17,609 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:57:17,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,609 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:17,609 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:17,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2022-11-20 10:57:17,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:17,610 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:17,612 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,617 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,622 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,627 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,644 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,648 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,658 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:17,738 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:17,744 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:57:17,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,766 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 [2022-11-20 10:57:17,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 10:57:17,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:17,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:17,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:17,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:17,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:17,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:17,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:17,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:17,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,826 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 [2022-11-20 10:57:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 10:57:17,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:17,842 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:17,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:17,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:17,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:17,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:17,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:17,854 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:17,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 10:57:17,874 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 [2022-11-20 10:57:17,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:17,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:17,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:17,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:17,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:17,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:17,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:17,900 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:17,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,913 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,924 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 [2022-11-20 10:57:17,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 10:57:17,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:17,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:17,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:17,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:17,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:17,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:17,942 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:17,951 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:17,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:17,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:17,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:17,962 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:17,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 10:57:17,966 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 [2022-11-20 10:57:17,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:17,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:17,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:17,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:17,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:17,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:17,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:18,005 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:18,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:18,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:18,011 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:18,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 10:57:18,014 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 [2022-11-20 10:57:18,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:18,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:18,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:18,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:18,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:18,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:18,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:18,047 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:57:18,054 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:57:18,054 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:57:18,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:18,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:18,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:18,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 10:57:18,062 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:57:18,062 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:57:18,062 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:57:18,063 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-11-20 10:57:18,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:18,069 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:57:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:57:18,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:18,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:18,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:18,356 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-20 10:57:18,358 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:18,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:18,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-11-20 10:57:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-11-20 10:57:18,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-20 10:57:18,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:18,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-20 10:57:18,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:18,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-11-20 10:57:18,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:18,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-11-20 10:57:18,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:57:18,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-11-20 10:57:18,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-20 10:57:18,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-11-20 10:57:18,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-11-20 10:57:18,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:18,769 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-20 10:57:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-11-20 10:57:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-11-20 10:57:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-20 10:57:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-20 10:57:18,818 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-20 10:57:18,818 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-20 10:57:18,818 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 10:57:18,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-11-20 10:57:18,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:57:18,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:18,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:18,825 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:18,825 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:18,825 INFO L748 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-11-20 10:57:18,826 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-11-20 10:57:18,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-11-20 10:57:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:18,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105424596] [2022-11-20 10:57:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 10:57:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:57:19,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:19,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105424596] [2022-11-20 10:57:19,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105424596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:19,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:19,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:57:19,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31797828] [2022-11-20 10:57:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:19,055 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:57:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-11-20 10:57:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:19,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477622127] [2022-11-20 10:57:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:57:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477622127] [2022-11-20 10:57:19,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477622127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:19,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:19,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:57:19,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884360939] [2022-11-20 10:57:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:19,161 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:57:19,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:19,166 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:19,273 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-11-20 10:57:19,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-11-20 10:57:19,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:57:19,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-11-20 10:57:19,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-11-20 10:57:19,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-20 10:57:19,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-11-20 10:57:19,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:19,280 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-11-20 10:57:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-11-20 10:57:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-20 10:57:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-20 10:57:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-20 10:57:19,290 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-20 10:57:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:19,292 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-20 10:57:19,292 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 10:57:19,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-11-20 10:57:19,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:57:19,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:19,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:19,295 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:19,296 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:19,296 INFO L748 eck$LassoCheckResult]: Stem: 340#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 341#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-11-20 10:57:19,296 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-11-20 10:57:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-11-20 10:57:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:19,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357672899] [2022-11-20 10:57:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:19,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 10:57:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:19,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:19,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357672899] [2022-11-20 10:57:19,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357672899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:19,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360637645] [2022-11-20 10:57:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:19,460 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:19,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 10:57:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:19,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:57:19,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:19,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:19,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360637645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:19,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:19,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-11-20 10:57:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207011558] [2022-11-20 10:57:19,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:19,752 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:57:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-11-20 10:57:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:19,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416643669] [2022-11-20 10:57:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:19,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:19,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:20,082 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:20,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:20,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:20,083 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:20,083 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:57:20,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:20,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:20,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:20,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2022-11-20 10:57:20,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:20,084 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:20,086 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,089 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,093 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,096 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,100 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,116 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,122 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,143 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:20,230 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:20,230 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:57:20,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:20,232 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:20,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:20,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:20,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 10:57:20,270 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:20,270 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:20,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:20,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:20,285 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:20,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:20,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:20,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 10:57:20,347 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:20,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:20,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:20,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:20,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:20,376 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:20,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:20,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:20,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 10:57:20,420 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:20,420 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:20,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:20,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:20,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:20,431 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:20,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:20,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:20,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 10:57:20,460 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:20,461 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:20,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:20,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:20,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:20,472 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:20,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:20,477 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:20,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 10:57:20,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:20,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:20,515 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:20,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:57:20,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:20,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 10:57:22,007 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:57:22,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:22,012 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:22,012 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:22,013 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:22,013 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:22,013 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:57:22,013 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:22,013 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:22,013 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:22,013 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2022-11-20 10:57:22,014 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:22,014 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:22,015 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,028 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,032 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,035 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,047 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,053 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,057 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,060 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:22,134 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:22,134 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:57:22,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:22,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:22,136 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:22,145 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 [2022-11-20 10:57:22,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 10:57:22,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:22,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:22,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:22,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:22,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:22,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:22,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:22,177 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:22,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:22,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:22,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:22,188 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:22,194 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 [2022-11-20 10:57:22,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 10:57:22,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:22,210 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:22,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:22,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:22,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:22,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:22,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:22,224 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:22,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:22,230 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:22,234 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 [2022-11-20 10:57:22,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 10:57:22,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:22,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:22,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:22,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:22,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:22,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:22,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:22,277 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:22,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:22,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:22,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:22,284 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:22,290 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 [2022-11-20 10:57:22,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 10:57:22,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:22,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:22,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:22,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:22,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:22,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:22,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:22,331 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:57:22,338 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:57:22,338 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:57:22,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:22,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:22,343 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:22,345 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:57:22,345 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:57:22,345 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:57:22,345 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-11-20 10:57:22,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 10:57:22,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:22,356 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:57:22,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:22,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:57:22,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:22,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:57:22,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:22,744 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-20 10:57:22,744 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:57:23,311 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-11-20 10:57:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:57:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-11-20 10:57:23,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-20 10:57:23,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:23,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-11-20 10:57:23,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:23,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-11-20 10:57:23,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:23,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-11-20 10:57:23,323 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-20 10:57:23,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-11-20 10:57:23,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-11-20 10:57:23,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-11-20 10:57:23,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-11-20 10:57:23,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:23,344 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-11-20 10:57:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-11-20 10:57:23,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-11-20 10:57:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-11-20 10:57:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-20 10:57:23,365 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-20 10:57:23,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:57:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:57:23,367 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:23,606 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2022-11-20 10:57:23,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 247 transitions. [2022-11-20 10:57:23,612 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-20 10:57:23,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 243 transitions. [2022-11-20 10:57:23,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2022-11-20 10:57:23,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2022-11-20 10:57:23,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 243 transitions. [2022-11-20 10:57:23,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:23,630 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 243 transitions. [2022-11-20 10:57:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 243 transitions. [2022-11-20 10:57:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2022-11-20 10:57:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (56), 33 states have call predecessors, (56), 36 states have call successors, (56) [2022-11-20 10:57:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2022-11-20 10:57:23,657 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-11-20 10:57:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:57:23,658 INFO L428 stractBuchiCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-11-20 10:57:23,658 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 10:57:23,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 225 transitions. [2022-11-20 10:57:23,661 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-20 10:57:23,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:23,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:23,663 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:23,663 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:23,663 INFO L748 eck$LassoCheckResult]: Stem: 1200#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1201#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1230#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1271#fibo1ENTRY ~n := #in~n; 1257#L10 assume !(~n < 1); 1251#L12 assume !(1 == ~n); 1206#L15 call #t~ret4 := fibo2(~n - 1);< 1258#fibo2ENTRY ~n := #in~n; 1265#L20 assume !(~n < 1); 1205#L22 assume !(1 == ~n); 1207#L25 call #t~ret6 := fibo1(~n - 1);< 1238#fibo1ENTRY ~n := #in~n; 1301#L10 assume !(~n < 1); 1306#L12 assume !(1 == ~n); 1203#L15 call #t~ret4 := fibo2(~n - 1);< 1316#fibo2ENTRY ~n := #in~n; 1319#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1315#fibo2EXIT >#50#return; 1312#L15-1 call #t~ret5 := fibo2(~n - 2);< 1313#fibo2ENTRY ~n := #in~n; 1317#L20 assume ~n < 1;#res := 0; 1314#fibo2FINAL assume true; 1311#fibo2EXIT >#52#return; 1308#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1304#fibo1FINAL assume true; 1305#fibo1EXIT >#46#return; 1226#L25-1 call #t~ret7 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1328#L10 assume ~n < 1;#res := 0; 1363#fibo1FINAL assume true; 1225#fibo1EXIT >#48#return; 1229#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1241#fibo2FINAL assume true; 1252#fibo2EXIT >#50#return; 1232#L15-1 call #t~ret5 := fibo2(~n - 2);< 1239#fibo2ENTRY [2022-11-20 10:57:23,663 INFO L750 eck$LassoCheckResult]: Loop: 1239#fibo2ENTRY ~n := #in~n; 1268#L20 assume !(~n < 1); 1309#L22 assume !(1 == ~n); 1231#L25 call #t~ret6 := fibo1(~n - 1);< 1216#fibo1ENTRY ~n := #in~n; 1346#L10 assume !(~n < 1); 1248#L12 assume !(1 == ~n); 1234#L15 call #t~ret4 := fibo2(~n - 1);< 1239#fibo2ENTRY [2022-11-20 10:57:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 613030308, now seen corresponding path program 1 times [2022-11-20 10:57:23,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:23,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836212724] [2022-11-20 10:57:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:23,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 10:57:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:57:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:23,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836212724] [2022-11-20 10:57:23,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836212724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:23,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590935282] [2022-11-20 10:57:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:23,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:23,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:23,851 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:23,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 10:57:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:23,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:57:23,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:24,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-11-20 10:57:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:57:24,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:57:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590935282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:24,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:24,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2022-11-20 10:57:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795657973] [2022-11-20 10:57:24,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:24,563 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:57:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-11-20 10:57:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:24,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265448348] [2022-11-20 10:57:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:24,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:24,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:24,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:24,695 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:24,695 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:24,695 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:24,696 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:24,696 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:57:24,696 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,696 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:24,696 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:24,696 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2022-11-20 10:57:24,696 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:24,696 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:24,697 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,705 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,708 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,711 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,717 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,726 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:24,787 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:24,787 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:57:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,792 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:24,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:24,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 10:57:24,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:24,830 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:24,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:24,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,836 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:24,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:24,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 10:57:24,860 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:24,860 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:24,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-11-20 10:57:24,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,865 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 10:57:24,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:24,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:24,882 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:24,882 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:24,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,888 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 10:57:24,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:24,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:24,908 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:24,908 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:24,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:24,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,913 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 10:57:24,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:24,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:24,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:24,930 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:24,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:24,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,935 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 10:57:24,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:24,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:24,953 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:24,953 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:24,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:24,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,958 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 10:57:24,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:24,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:24,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-20 10:57:24,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:24,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:24,980 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:24,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 10:57:24,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:57:24,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:25,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:57:25,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:25,109 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:25,110 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:25,110 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:25,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:25,110 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:57:25,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:25,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:25,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2022-11-20 10:57:25,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:25,110 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:25,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,117 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,123 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,126 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,129 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,131 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,134 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:25,206 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:25,206 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:57:25,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,208 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,220 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 [2022-11-20 10:57:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-20 10:57:25,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,237 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,238 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,238 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,240 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:25,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:25,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,245 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,249 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 [2022-11-20 10:57:25,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-20 10:57:25,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,263 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,299 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:25,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:25,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,304 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,308 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 [2022-11-20 10:57:25,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-20 10:57:25,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,339 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:25,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:25,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,350 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-20 10:57:25,355 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 [2022-11-20 10:57:25,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,370 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,379 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:25,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:25,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,384 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-20 10:57:25,387 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 [2022-11-20 10:57:25,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,411 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:25,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-11-20 10:57:25,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,416 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-20 10:57:25,420 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 [2022-11-20 10:57:25,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,436 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:25,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-11-20 10:57:25,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,440 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-20 10:57:25,444 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 [2022-11-20 10:57:25,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,470 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:25,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2022-11-20 10:57:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,475 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-20 10:57:25,478 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 [2022-11-20 10:57:25,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:25,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:25,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:25,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:25,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:25,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:25,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:25,495 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:57:25,498 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-20 10:57:25,498 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:57:25,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:25,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:25,502 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:25,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-20 10:57:25,504 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:57:25,505 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:57:25,505 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:57:25,505 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-11-20 10:57:25,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-11-20 10:57:25,509 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:57:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:25,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:57:25,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:25,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:26,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:26,192 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-20 10:57:26,192 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:57:26,424 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-11-20 10:57:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:57:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-11-20 10:57:26,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-20 10:57:26,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:26,427 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:57:26,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:26,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:57:26,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:26,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:26,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:27,012 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-20 10:57:27,012 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:57:27,216 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-11-20 10:57:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:57:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-11-20 10:57:27,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-20 10:57:27,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:27,219 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:57:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:27,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:57:27,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:27,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:27,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:27,802 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-20 10:57:27,803 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:57:28,013 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 553 states and 762 transitions. Complement of second has 25 states. [2022-11-20 10:57:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:57:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-11-20 10:57:28,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-20 10:57:28,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:28,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-20 10:57:28,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:28,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 16 letters. [2022-11-20 10:57:28,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:28,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 553 states and 762 transitions. [2022-11-20 10:57:28,034 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-11-20 10:57:28,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 553 states to 445 states and 639 transitions. [2022-11-20 10:57:28,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2022-11-20 10:57:28,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2022-11-20 10:57:28,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 639 transitions. [2022-11-20 10:57:28,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:28,056 INFO L218 hiAutomatonCegarLoop]: Abstraction has 445 states and 639 transitions. [2022-11-20 10:57:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 639 transitions. [2022-11-20 10:57:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 370. [2022-11-20 10:57:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 246 states have (on average 1.2845528455284554) internal successors, (316), 269 states have internal predecessors, (316), 71 states have call successors, (74), 55 states have call predecessors, (74), 53 states have return successors, (117), 45 states have call predecessors, (117), 69 states have call successors, (117) [2022-11-20 10:57:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions. [2022-11-20 10:57:28,123 INFO L240 hiAutomatonCegarLoop]: Abstraction has 370 states and 507 transitions. [2022-11-20 10:57:28,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:57:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:57:28,125 INFO L87 Difference]: Start difference. First operand 370 states and 507 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-20 10:57:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:28,581 INFO L93 Difference]: Finished difference Result 449 states and 635 transitions. [2022-11-20 10:57:28,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 635 transitions. [2022-11-20 10:57:28,589 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-20 10:57:28,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 410 states and 591 transitions. [2022-11-20 10:57:28,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2022-11-20 10:57:28,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 229 [2022-11-20 10:57:28,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 591 transitions. [2022-11-20 10:57:28,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:28,598 INFO L218 hiAutomatonCegarLoop]: Abstraction has 410 states and 591 transitions. [2022-11-20 10:57:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 591 transitions. [2022-11-20 10:57:28,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 359. [2022-11-20 10:57:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 233 states have (on average 1.240343347639485) internal successors, (289), 261 states have internal predecessors, (289), 74 states have call successors, (77), 50 states have call predecessors, (77), 52 states have return successors, (130), 47 states have call predecessors, (130), 72 states have call successors, (130) [2022-11-20 10:57:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 496 transitions. [2022-11-20 10:57:28,633 INFO L240 hiAutomatonCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-11-20 10:57:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:57:28,634 INFO L428 stractBuchiCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-11-20 10:57:28,634 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 10:57:28,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 496 transitions. [2022-11-20 10:57:28,638 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-20 10:57:28,638 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:28,638 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:28,641 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:28,641 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-11-20 10:57:28,642 INFO L748 eck$LassoCheckResult]: Stem: 4905#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4941#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4985#fibo1ENTRY ~n := #in~n; 5033#L10 assume !(~n < 1); 5032#L12 assume !(1 == ~n); 5017#L15 call #t~ret4 := fibo2(~n - 1);< 5030#fibo2ENTRY ~n := #in~n; 5029#L20 assume !(~n < 1); 5026#L22 assume !(1 == ~n); 4947#L25 call #t~ret6 := fibo1(~n - 1);< 5018#fibo1ENTRY ~n := #in~n; 5027#L10 assume !(~n < 1); 5123#L12 assume !(1 == ~n); 5102#L15 call #t~ret4 := fibo2(~n - 1);< 5121#fibo2ENTRY ~n := #in~n; 5126#L20 assume !(~n < 1); 5125#L22 assume 1 == ~n;#res := 1; 5122#fibo2FINAL assume true; 5120#fibo2EXIT >#50#return; 4944#L15-1 call #t~ret5 := fibo2(~n - 2);< 4948#fibo2ENTRY ~n := #in~n; 5148#L20 assume ~n < 1;#res := 0; 5137#fibo2FINAL assume true; 5136#fibo2EXIT >#52#return; 5135#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5134#fibo1FINAL assume true; 5133#fibo1EXIT >#46#return; 5108#L25-1 call #t~ret7 := fibo1(~n - 2);< 5114#fibo1ENTRY ~n := #in~n; 5254#L10 assume ~n < 1;#res := 0; 5252#fibo1FINAL assume true; 5158#fibo1EXIT >#48#return; 5159#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5181#fibo2FINAL assume true; 5180#fibo2EXIT >#50#return; 4915#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY [2022-11-20 10:57:28,642 INFO L750 eck$LassoCheckResult]: Loop: 5103#fibo2ENTRY ~n := #in~n; 4983#L20 assume !(~n < 1); 4913#L22 assume !(1 == ~n); 4919#L25 call #t~ret6 := fibo1(~n - 1);< 5117#fibo1ENTRY ~n := #in~n; 5131#L10 assume !(~n < 1); 5176#L12 assume !(1 == ~n); 4918#L15 call #t~ret4 := fibo2(~n - 1);< 4982#fibo2ENTRY ~n := #in~n; 4983#L20 assume !(~n < 1); 4913#L22 assume !(1 == ~n); 4919#L25 call #t~ret6 := fibo1(~n - 1);< 5117#fibo1ENTRY ~n := #in~n; 5131#L10 assume !(~n < 1); 5176#L12 assume !(1 == ~n); 4918#L15 call #t~ret4 := fibo2(~n - 1);< 4982#fibo2ENTRY ~n := #in~n; 4984#L20 assume !(~n < 1); 5195#L22 assume 1 == ~n;#res := 1; 5194#fibo2FINAL assume true; 5191#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#46#return; 5185#L25-1 call #t~ret7 := fibo1(~n - 2);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume !(~n < 1); 5197#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5151#fibo2ENTRY ~n := #in~n; 5174#L20 assume !(~n < 1); 5172#L22 assume !(1 == ~n); 5170#L25 call #t~ret6 := fibo1(~n - 1);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume !(~n < 1); 5197#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5151#fibo2ENTRY ~n := #in~n; 5174#L20 assume !(~n < 1); 5172#L22 assume 1 == ~n;#res := 1; 5173#fibo2FINAL assume true; 5192#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#46#return; 5185#L25-1 call #t~ret7 := fibo1(~n - 2);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume ~n < 1;#res := 0; 5157#fibo1FINAL assume true; 5188#fibo1EXIT >#48#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5140#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#48#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5140#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY [2022-11-20 10:57:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1718474001, now seen corresponding path program 1 times [2022-11-20 10:57:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:28,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420196024] [2022-11-20 10:57:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:28,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:28,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:57:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:29,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420196024] [2022-11-20 10:57:29,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420196024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:29,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957571816] [2022-11-20 10:57:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:29,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:29,009 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:29,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-20 10:57:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:57:29,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:57:29,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:57:29,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957571816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:29,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:29,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2022-11-20 10:57:29,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046450563] [2022-11-20 10:57:29,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:29,415 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:57:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 688787707, now seen corresponding path program 1 times [2022-11-20 10:57:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:29,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929617898] [2022-11-20 10:57:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:57:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:57:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 10:57:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:29,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929617898] [2022-11-20 10:57:29,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929617898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:29,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121276169] [2022-11-20 10:57:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:29,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:29,932 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:29,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-20 10:57:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:30,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:57:30,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 10:57:30,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 10:57:30,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121276169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:30,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:30,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-20 10:57:30,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294237122] [2022-11-20 10:57:30,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:30,740 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:57:30,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:30,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:57:30,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:57:30,742 INFO L87 Difference]: Start difference. First operand 359 states and 496 transitions. cyclomatic complexity: 144 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 10:57:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:31,016 INFO L93 Difference]: Finished difference Result 387 states and 546 transitions. [2022-11-20 10:57:31,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 546 transitions. [2022-11-20 10:57:31,021 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-20 10:57:31,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 387 states and 546 transitions. [2022-11-20 10:57:31,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 209 [2022-11-20 10:57:31,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 209 [2022-11-20 10:57:31,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 387 states and 546 transitions. [2022-11-20 10:57:31,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:31,028 INFO L218 hiAutomatonCegarLoop]: Abstraction has 387 states and 546 transitions. [2022-11-20 10:57:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states and 546 transitions. [2022-11-20 10:57:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2022-11-20 10:57:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 238 states have (on average 1.2352941176470589) internal successors, (294), 269 states have internal predecessors, (294), 75 states have call successors, (78), 50 states have call predecessors, (78), 56 states have return successors, (136), 49 states have call predecessors, (136), 73 states have call successors, (136) [2022-11-20 10:57:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2022-11-20 10:57:31,047 INFO L240 hiAutomatonCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-11-20 10:57:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:57:31,048 INFO L428 stractBuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-11-20 10:57:31,049 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 10:57:31,049 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2022-11-20 10:57:31,052 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-20 10:57:31,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:31,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:31,055 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:31,055 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-11-20 10:57:31,055 INFO L748 eck$LassoCheckResult]: Stem: 6614#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6615#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6654#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6697#fibo1ENTRY ~n := #in~n; 6748#L10 assume !(~n < 1); 6747#L12 assume !(1 == ~n); 6739#L15 call #t~ret4 := fibo2(~n - 1);< 6745#fibo2ENTRY ~n := #in~n; 6744#L20 assume !(~n < 1); 6741#L22 assume !(1 == ~n); 6661#L25 call #t~ret6 := fibo1(~n - 1);< 6740#fibo1ENTRY ~n := #in~n; 6729#L10 assume !(~n < 1); 6730#L12 assume !(1 == ~n); 6716#L15 call #t~ret4 := fibo2(~n - 1);< 6717#fibo2ENTRY ~n := #in~n; 6731#L20 assume !(~n < 1); 6732#L22 assume !(1 == ~n); 6663#L25 call #t~ret6 := fibo1(~n - 1);< 6740#fibo1ENTRY ~n := #in~n; 6742#L10 assume !(~n < 1); 6836#L12 assume 1 == ~n;#res := 1; 6834#fibo1FINAL assume true; 6832#fibo1EXIT >#46#return; 6812#L25-1 call #t~ret7 := fibo1(~n - 2);< 6819#fibo1ENTRY ~n := #in~n; 6932#L10 assume ~n < 1;#res := 0; 6933#fibo1FINAL assume true; 6936#fibo1EXIT >#48#return; 6886#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6914#fibo2FINAL assume true; 6851#fibo2EXIT >#50#return; 6626#L15-1 [2022-11-20 10:57:31,056 INFO L750 eck$LassoCheckResult]: Loop: 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6692#L20 assume !(~n < 1); 6622#L22 assume !(1 == ~n); 6628#L25 call #t~ret6 := fibo1(~n - 1);< 6875#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6901#L12 assume !(1 == ~n); 6627#L15 call #t~ret4 := fibo2(~n - 1);< 6695#fibo2ENTRY ~n := #in~n; 6692#L20 assume !(~n < 1); 6622#L22 assume !(1 == ~n); 6628#L25 call #t~ret6 := fibo1(~n - 1);< 6875#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6901#L12 assume !(1 == ~n); 6627#L15 call #t~ret4 := fibo2(~n - 1);< 6695#fibo2ENTRY ~n := #in~n; 6696#L20 assume !(~n < 1); 6906#L22 assume 1 == ~n;#res := 1; 6907#fibo2FINAL assume true; 6892#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6859#L25-1 call #t~ret7 := fibo1(~n - 2);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume !(1 == ~n); 6854#L15 call #t~ret4 := fibo2(~n - 1);< 6862#fibo2ENTRY ~n := #in~n; 6919#L20 assume !(~n < 1); 6916#L22 assume !(1 == ~n); 6857#L25 call #t~ret6 := fibo1(~n - 1);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume !(1 == ~n); 6854#L15 call #t~ret4 := fibo2(~n - 1);< 6862#fibo2ENTRY ~n := #in~n; 6919#L20 assume !(~n < 1); 6916#L22 assume 1 == ~n;#res := 1; 6915#fibo2FINAL assume true; 6890#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6859#L25-1 call #t~ret7 := fibo1(~n - 2);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume 1 == ~n;#res := 1; 6897#fibo1FINAL assume true; 6864#fibo1EXIT >#48#return; 6863#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6861#fibo2FINAL assume true; 6853#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#48#return; 6863#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6861#fibo2FINAL assume true; 6853#fibo2EXIT >#50#return; 6626#L15-1 [2022-11-20 10:57:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-11-20 10:57:31,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:31,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395589197] [2022-11-20 10:57:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:31,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:57:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:57:31,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:31,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395589197] [2022-11-20 10:57:31,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395589197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:31,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218899022] [2022-11-20 10:57:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:31,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:31,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:31,255 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:31,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-20 10:57:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:57:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:57:31,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:57:31,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218899022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:31,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:31,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2022-11-20 10:57:31,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300267275] [2022-11-20 10:57:31,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:31,659 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:57:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash 651349219, now seen corresponding path program 1 times [2022-11-20 10:57:31,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:31,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762232858] [2022-11-20 10:57:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:31,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:57:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:57:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 10:57:31,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:31,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762232858] [2022-11-20 10:57:31,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762232858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:31,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268695963] [2022-11-20 10:57:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:31,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:31,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:31,997 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:32,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-20 10:57:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:32,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:57:32,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-20 10:57:32,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-20 10:57:32,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268695963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:32,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:32,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-20 10:57:32,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696652594] [2022-11-20 10:57:32,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:32,806 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:57:32,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:32,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:57:32,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:57:32,808 INFO L87 Difference]: Start difference. First operand 369 states and 508 transitions. cyclomatic complexity: 146 Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:57:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:33,142 INFO L93 Difference]: Finished difference Result 400 states and 493 transitions. [2022-11-20 10:57:33,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 493 transitions. [2022-11-20 10:57:33,146 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-11-20 10:57:33,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 235 states and 273 transitions. [2022-11-20 10:57:33,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2022-11-20 10:57:33,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2022-11-20 10:57:33,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 273 transitions. [2022-11-20 10:57:33,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:33,149 INFO L218 hiAutomatonCegarLoop]: Abstraction has 235 states and 273 transitions. [2022-11-20 10:57:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states and 273 transitions. [2022-11-20 10:57:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 218. [2022-11-20 10:57:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 143 states have (on average 1.167832167832168) internal successors, (167), 159 states have internal predecessors, (167), 47 states have call successors, (48), 34 states have call predecessors, (48), 28 states have return successors, (39), 24 states have call predecessors, (39), 30 states have call successors, (39) [2022-11-20 10:57:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2022-11-20 10:57:33,156 INFO L240 hiAutomatonCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-11-20 10:57:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:57:33,157 INFO L428 stractBuchiCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-11-20 10:57:33,157 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 10:57:33,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 254 transitions. [2022-11-20 10:57:33,159 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-20 10:57:33,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:33,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:33,162 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:33,162 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:33,163 INFO L748 eck$LassoCheckResult]: Stem: 8302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8303#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8337#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8375#fibo1ENTRY ~n := #in~n; 8404#L10 assume !(~n < 1); 8399#L12 assume !(1 == ~n); 8349#L15 call #t~ret4 := fibo2(~n - 1);< 8394#fibo2ENTRY ~n := #in~n; 8390#L20 assume !(~n < 1); 8388#L22 assume !(1 == ~n); 8346#L25 call #t~ret6 := fibo1(~n - 1);< 8385#fibo1ENTRY ~n := #in~n; 8413#L10 assume !(~n < 1); 8409#L12 assume !(1 == ~n); 8402#L15 call #t~ret4 := fibo2(~n - 1);< 8403#fibo2ENTRY ~n := #in~n; 8414#L20 assume !(~n < 1); 8411#L22 assume 1 == ~n;#res := 1; 8406#fibo2FINAL assume true; 8401#fibo2EXIT >#50#return; 8397#L15-1 call #t~ret5 := fibo2(~n - 2);< 8398#fibo2ENTRY ~n := #in~n; 8405#L20 assume ~n < 1;#res := 0; 8400#fibo2FINAL assume true; 8396#fibo2EXIT >#52#return; 8395#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8392#fibo1FINAL assume true; 8383#fibo1EXIT >#46#return; 8377#L25-1 call #t~ret7 := fibo1(~n - 2);< 8379#fibo1ENTRY ~n := #in~n; 8449#L10 assume !(~n < 1); 8445#L12 assume 1 == ~n;#res := 1; 8420#fibo1FINAL assume true; 8376#fibo1EXIT >#48#return; 8348#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8350#fibo2FINAL assume true; 8354#fibo2EXIT >#50#return; 8321#L15-1 [2022-11-20 10:57:33,163 INFO L750 eck$LassoCheckResult]: Loop: 8321#L15-1 call #t~ret5 := fibo2(~n - 2);< 8431#fibo2ENTRY ~n := #in~n; 8427#L20 assume !(~n < 1); 8425#L22 assume !(1 == ~n); 8421#L25 call #t~ret6 := fibo1(~n - 1);< 8422#fibo1ENTRY ~n := #in~n; 8439#L10 assume !(~n < 1); 8440#L12 assume 1 == ~n;#res := 1; 8443#fibo1FINAL assume true; 8442#fibo1EXIT >#46#return; 8433#L25-1 call #t~ret7 := fibo1(~n - 2);< 8441#fibo1ENTRY ~n := #in~n; 8444#L10 assume !(~n < 1); 8436#L12 assume !(1 == ~n); 8323#L15 call #t~ret4 := fibo2(~n - 1);< 8429#fibo2ENTRY ~n := #in~n; 8430#L20 assume !(~n < 1); 8483#L22 assume 1 == ~n;#res := 1; 8471#fibo2FINAL assume true; 8459#fibo2EXIT >#50#return; 8321#L15-1 [2022-11-20 10:57:33,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -979062994, now seen corresponding path program 1 times [2022-11-20 10:57:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:33,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906280247] [2022-11-20 10:57:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:33,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:33,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1176615322, now seen corresponding path program 1 times [2022-11-20 10:57:33,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:33,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083357601] [2022-11-20 10:57:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:33,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:57:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:57:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:57:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083357601] [2022-11-20 10:57:33,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083357601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716810598] [2022-11-20 10:57:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:33,276 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:33,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-20 10:57:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:57:33,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:33,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:57:33,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716810598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:33,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:33,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-11-20 10:57:33,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753209969] [2022-11-20 10:57:33,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:33,439 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:57:33,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:57:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:57:33,440 INFO L87 Difference]: Start difference. First operand 218 states and 254 transitions. cyclomatic complexity: 42 Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:57:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:33,528 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2022-11-20 10:57:33,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 213 transitions. [2022-11-20 10:57:33,530 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-11-20 10:57:33,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 160 states and 179 transitions. [2022-11-20 10:57:33,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2022-11-20 10:57:33,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2022-11-20 10:57:33,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 179 transitions. [2022-11-20 10:57:33,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:33,533 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 179 transitions. [2022-11-20 10:57:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 179 transitions. [2022-11-20 10:57:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-11-20 10:57:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 114 states have internal predecessors, (118), 33 states have call successors, (34), 26 states have call predecessors, (34), 19 states have return successors, (25), 17 states have call predecessors, (25), 24 states have call successors, (25) [2022-11-20 10:57:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2022-11-20 10:57:33,538 INFO L240 hiAutomatonCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-11-20 10:57:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:33,539 INFO L428 stractBuchiCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-11-20 10:57:33,539 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-20 10:57:33,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 158 states and 177 transitions. [2022-11-20 10:57:33,541 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-11-20 10:57:33,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:33,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:33,542 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:33,542 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:33,543 INFO L748 eck$LassoCheckResult]: Stem: 8853#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8854#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8886#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8924#fibo1ENTRY ~n := #in~n; 8959#L10 assume !(~n < 1); 8958#L12 assume !(1 == ~n); 8888#L15 call #t~ret4 := fibo2(~n - 1);< 8955#fibo2ENTRY ~n := #in~n; 8951#L20 assume !(~n < 1); 8949#L22 assume !(1 == ~n); 8899#L25 call #t~ret6 := fibo1(~n - 1);< 8947#fibo1ENTRY ~n := #in~n; 8885#L10 assume !(~n < 1); 8908#L12 assume !(1 == ~n); 8963#L15 call #t~ret4 := fibo2(~n - 1);< 8964#fibo2ENTRY ~n := #in~n; 8977#L20 assume !(~n < 1); 8971#L22 assume 1 == ~n;#res := 1; 8968#fibo2FINAL assume true; 8962#fibo2EXIT >#50#return; 8953#L15-1 call #t~ret5 := fibo2(~n - 2);< 8954#fibo2ENTRY ~n := #in~n; 8957#L20 assume ~n < 1;#res := 0; 8956#fibo2FINAL assume true; 8952#fibo2EXIT >#52#return; 8950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8948#fibo1FINAL assume true; 8946#fibo1EXIT >#46#return; 8873#L25-1 call #t~ret7 := fibo1(~n - 2);< 8881#fibo1ENTRY ~n := #in~n; 8882#L10 assume !(~n < 1); 8901#L12 assume 1 == ~n;#res := 1; 8872#fibo1FINAL assume true; 8874#fibo1EXIT >#48#return; 8887#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8889#fibo2FINAL assume true; 8916#fibo2EXIT >#50#return; 8894#L15-1 call #t~ret5 := fibo2(~n - 2);< 8897#fibo2ENTRY [2022-11-20 10:57:33,543 INFO L750 eck$LassoCheckResult]: Loop: 8897#fibo2ENTRY ~n := #in~n; 8917#L20 assume !(~n < 1); 9002#L22 assume !(1 == ~n); 8893#L25 call #t~ret6 := fibo1(~n - 1);< 8896#fibo1ENTRY ~n := #in~n; 8984#L10 assume !(~n < 1); 8902#L12 assume !(1 == ~n); 8856#L15 call #t~ret4 := fibo2(~n - 1);< 8912#fibo2ENTRY ~n := #in~n; 8913#L20 assume !(~n < 1); 8855#L22 assume 1 == ~n;#res := 1; 8857#fibo2FINAL assume true; 8988#fibo2EXIT >#50#return; 8895#L15-1 call #t~ret5 := fibo2(~n - 2);< 8897#fibo2ENTRY [2022-11-20 10:57:33,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash -286181691, now seen corresponding path program 2 times [2022-11-20 10:57:33,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:33,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544633294] [2022-11-20 10:57:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:33,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:33,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:33,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash -767060718, now seen corresponding path program 1 times [2022-11-20 10:57:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:33,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059859499] [2022-11-20 10:57:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:33,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:33,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:33,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1541383382, now seen corresponding path program 3 times [2022-11-20 10:57:33,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:33,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417333080] [2022-11-20 10:57:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:33,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:57:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:57:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:57:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 10:57:33,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:33,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417333080] [2022-11-20 10:57:33,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417333080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:33,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698614740] [2022-11-20 10:57:33,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:57:33,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:33,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:33,751 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:33,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-20 10:57:33,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:57:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:57:33,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:57:33,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 10:57:33,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 10:57:34,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698614740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:34,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:34,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 13 [2022-11-20 10:57:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867395511] [2022-11-20 10:57:34,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:34,200 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:34,200 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:34,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:34,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:34,201 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:57:34,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:34,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:34,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2022-11-20 10:57:34,201 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:34,201 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:34,202 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,205 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,208 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,211 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,215 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,220 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,226 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:34,293 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:57:34,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,298 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:34,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-20 10:57:34,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:34,335 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:34,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,342 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:34,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-20 10:57:34,379 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:34,380 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:34,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,387 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:34,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-20 10:57:34,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:34,424 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:34,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,429 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:34,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-11-20 10:57:34,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:34,467 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:34,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,474 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:34,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-20 10:57:34,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:34,501 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:34,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2022-11-20 10:57:34,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,506 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:34,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-20 10:57:34,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:57:34,548 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:57:34,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,554 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:57:34,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-20 10:57:34,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-11-20 10:57:34,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,606 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:57:34,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:57:34,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-20 10:57:34,643 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:57:34,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,648 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:57:34,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:57:34,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:57:34,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:57:34,648 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:57:34,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:57:34,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:57:34,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2022-11-20 10:57:34,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:57:34,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:57:34,650 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,652 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,655 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,657 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,660 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,662 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,667 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,670 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:57:34,716 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:57:34,716 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:57:34,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,717 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,724 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 [2022-11-20 10:57:34,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-11-20 10:57:34,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:34,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:34,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:34,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:34,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:34,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:34,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:34,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:34,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,756 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,764 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:57:34,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-11-20 10:57:34,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:34,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:34,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:34,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:34,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:34,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:34,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:34,796 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:34,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,802 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,805 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 [2022-11-20 10:57:34,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:34,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:34,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:34,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:34,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:34,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:34,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:34,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-11-20 10:57:34,827 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:34,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,832 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,836 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 [2022-11-20 10:57:34,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:34,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:34,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:34,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:34,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:34,849 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:34,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:34,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-11-20 10:57:34,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:34,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,869 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:57:34,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-11-20 10:57:34,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:34,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:34,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:34,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:34,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:34,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:34,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:34,903 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:57:34,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,908 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,916 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 [2022-11-20 10:57:34,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-11-20 10:57:34,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:57:34,930 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:57:34,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:57:34,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:57:34,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:57:34,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:57:34,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:57:34,941 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:57:34,943 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-20 10:57:34,944 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:57:34,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:57:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:34,951 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:34,953 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:57:34,953 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:57:34,953 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:57:34,953 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-11-20 10:57:34,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-11-20 10:57:34,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:34,957 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:57:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:35,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:57:35,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:35,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:57:35,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:35,528 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-20 10:57:35,528 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:57:35,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-11-20 10:57:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:57:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-11-20 10:57:35,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-20 10:57:35,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:35,884 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:57:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:35,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:57:35,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:36,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:36,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:57:36,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:36,453 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-20 10:57:36,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:57:36,777 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-11-20 10:57:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:57:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-11-20 10:57:36,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-20 10:57:36,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:36,780 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:57:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:36,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:57:36,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:37,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:57:37,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:37,359 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-20 10:57:37,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:57:37,835 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 338 states and 380 transitions. Complement of second has 29 states. [2022-11-20 10:57:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-20 10:57:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:57:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 43 transitions. [2022-11-20 10:57:37,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-20 10:57:37,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:37,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 52 letters. Loop has 14 letters. [2022-11-20 10:57:37,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:37,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 28 letters. [2022-11-20 10:57:37,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:57:37,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 380 transitions. [2022-11-20 10:57:37,843 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-11-20 10:57:37,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 220 states and 255 transitions. [2022-11-20 10:57:37,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2022-11-20 10:57:37,847 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 100 [2022-11-20 10:57:37,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 255 transitions. [2022-11-20 10:57:37,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:37,848 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 255 transitions. [2022-11-20 10:57:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 255 transitions. [2022-11-20 10:57:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 168. [2022-11-20 10:57:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.125) internal successors, (126), 120 states have internal predecessors, (126), 35 states have call successors, (36), 28 states have call predecessors, (36), 21 states have return successors, (27), 19 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-20 10:57:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2022-11-20 10:57:37,854 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 189 transitions. [2022-11-20 10:57:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:57:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:57:37,855 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:57:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:38,086 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2022-11-20 10:57:38,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 198 transitions. [2022-11-20 10:57:38,088 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-11-20 10:57:38,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 159 states and 178 transitions. [2022-11-20 10:57:38,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-11-20 10:57:38,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-11-20 10:57:38,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 178 transitions. [2022-11-20 10:57:38,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:57:38,095 INFO L218 hiAutomatonCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-11-20 10:57:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 178 transitions. [2022-11-20 10:57:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2022-11-20 10:57:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 113 states have internal predecessors, (120), 32 states have call successors, (32), 27 states have call predecessors, (32), 19 states have return successors, (23), 16 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-20 10:57:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2022-11-20 10:57:38,108 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-11-20 10:57:38,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:57:38,109 INFO L428 stractBuchiCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-11-20 10:57:38,109 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-20 10:57:38,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 157 states and 175 transitions. [2022-11-20 10:57:38,110 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-11-20 10:57:38,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:57:38,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:57:38,112 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:38,112 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:38,112 INFO L748 eck$LassoCheckResult]: Stem: 11190#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11191#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 11223#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11245#fibo1ENTRY ~n := #in~n; 11236#L10 assume !(~n < 1); 11231#L12 assume !(1 == ~n); 11198#L15 call #t~ret4 := fibo2(~n - 1);< 11238#fibo2ENTRY ~n := #in~n; 11346#L20 assume !(~n < 1); 11197#L22 assume !(1 == ~n); 11199#L25 call #t~ret6 := fibo1(~n - 1);< 11280#fibo1ENTRY ~n := #in~n; 11279#L10 assume !(~n < 1); 11278#L12 assume !(1 == ~n); 11275#L15 call #t~ret4 := fibo2(~n - 1);< 11276#fibo2ENTRY ~n := #in~n; 11284#L20 assume !(~n < 1); 11283#L22 assume 1 == ~n;#res := 1; 11282#fibo2FINAL assume true; 11274#fibo2EXIT >#50#return; 11271#L15-1 call #t~ret5 := fibo2(~n - 2);< 11272#fibo2ENTRY ~n := #in~n; 11277#L20 assume ~n < 1;#res := 0; 11273#fibo2FINAL assume true; 11270#fibo2EXIT >#52#return; 11269#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11268#fibo1FINAL assume true; 11266#fibo1EXIT >#46#return; 11204#L25-1 call #t~ret7 := fibo1(~n - 2);< 11216#fibo1ENTRY ~n := #in~n; 11259#L10 assume !(~n < 1); 11258#L12 assume !(1 == ~n); 11215#L15 call #t~ret4 := fibo2(~n - 1);< 11257#fibo2ENTRY ~n := #in~n; 11255#L20 assume !(~n < 1); 11253#L22 assume 1 == ~n;#res := 1; 11232#fibo2FINAL assume true; 11233#fibo2EXIT >#50#return; 11213#L15-1 [2022-11-20 10:57:38,112 INFO L750 eck$LassoCheckResult]: Loop: 11213#L15-1 call #t~ret5 := fibo2(~n - 2);< 11287#fibo2ENTRY ~n := #in~n; 11309#L20 assume !(~n < 1); 11336#L22 assume !(1 == ~n); 11201#L25 call #t~ret6 := fibo1(~n - 1);< 11224#fibo1ENTRY ~n := #in~n; 11339#L10 assume !(~n < 1); 11297#L12 assume !(1 == ~n); 11211#L15 call #t~ret4 := fibo2(~n - 1);< 11293#fibo2ENTRY ~n := #in~n; 11316#L20 assume !(~n < 1); 11315#L22 assume 1 == ~n;#res := 1; 11234#fibo2FINAL assume true; 11235#fibo2EXIT >#50#return; 11210#L15-1 call #t~ret5 := fibo2(~n - 2);< 11288#fibo2ENTRY ~n := #in~n; 11333#L20 assume ~n < 1;#res := 0; 11332#fibo2FINAL assume true; 11286#fibo2EXIT >#52#return; 11243#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11200#fibo1FINAL assume true; 11206#fibo1EXIT >#46#return; 11203#L25-1 call #t~ret7 := fibo1(~n - 2);< 11214#fibo1ENTRY ~n := #in~n; 11311#L10 assume !(~n < 1); 11310#L12 assume !(1 == ~n); 11212#L15 call #t~ret4 := fibo2(~n - 1);< 11322#fibo2ENTRY ~n := #in~n; 11326#L20 assume !(~n < 1); 11324#L22 assume 1 == ~n;#res := 1; 11321#fibo2FINAL assume true; 11291#fibo2EXIT >#50#return; 11213#L15-1 [2022-11-20 10:57:38,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash 772882902, now seen corresponding path program 1 times [2022-11-20 10:57:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:38,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510214826] [2022-11-20 10:57:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 10:57:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:57:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:57:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:38,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510214826] [2022-11-20 10:57:38,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510214826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000420529] [2022-11-20 10:57:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:38,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:38,251 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:38,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-20 10:57:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:57:38,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:57:38,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:57:38,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000420529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:38,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:38,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2022-11-20 10:57:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007686676] [2022-11-20 10:57:38,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:38,538 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 10:57:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1807088251, now seen corresponding path program 1 times [2022-11-20 10:57:38,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:38,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983886882] [2022-11-20 10:57:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:57:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:57:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:57:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:57:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:57:38,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983886882] [2022-11-20 10:57:38,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983886882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:38,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086091133] [2022-11-20 10:57:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:38,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:38,694 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:38,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-20 10:57:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:57:38,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:57:38,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:57:39,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086091133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:39,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:39,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2022-11-20 10:57:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612649237] [2022-11-20 10:57:39,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:39,105 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:57:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:57:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:57:39,106 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. cyclomatic complexity: 23 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 10:57:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:39,325 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-11-20 10:57:39,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 44 transitions. [2022-11-20 10:57:39,326 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:57:39,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2022-11-20 10:57:39,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 10:57:39,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 10:57:39,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 10:57:39,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:39,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:57:39,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:57:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:57:39,327 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:57:39,327 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-20 10:57:39,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:57:39,328 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:57:39,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 10:57:39,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:57:39 BoogieIcfgContainer [2022-11-20 10:57:39,338 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 10:57:39,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:57:39,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:57:39,339 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:57:39,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:15" (3/4) ... [2022-11-20 10:57:39,343 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:57:39,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:57:39,344 INFO L158 Benchmark]: Toolchain (without parser) took 24071.47ms. Allocated memory was 151.0MB in the beginning and 234.9MB in the end (delta: 83.9MB). Free memory was 102.8MB in the beginning and 83.0MB in the end (delta: 19.9MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. [2022-11-20 10:57:39,344 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 151.0MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:39,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.21ms. Allocated memory is still 151.0MB. Free memory was 102.4MB in the beginning and 92.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:57:39,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.97ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 91.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:39,345 INFO L158 Benchmark]: Boogie Preprocessor took 34.47ms. Allocated memory is still 151.0MB. Free memory was 91.3MB in the beginning and 90.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:57:39,345 INFO L158 Benchmark]: RCFGBuilder took 325.55ms. Allocated memory is still 151.0MB. Free memory was 90.2MB in the beginning and 80.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:57:39,346 INFO L158 Benchmark]: BuchiAutomizer took 23364.64ms. Allocated memory was 151.0MB in the beginning and 234.9MB in the end (delta: 83.9MB). Free memory was 80.2MB in the beginning and 84.0MB in the end (delta: -3.8MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. [2022-11-20 10:57:39,346 INFO L158 Benchmark]: Witness Printer took 4.38ms. Allocated memory is still 234.9MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:39,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 151.0MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.21ms. Allocated memory is still 151.0MB. Free memory was 102.4MB in the beginning and 92.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.97ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 91.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.47ms. Allocated memory is still 151.0MB. Free memory was 91.3MB in the beginning and 90.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 325.55ms. Allocated memory is still 151.0MB. Free memory was 90.2MB in the beginning and 80.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 23364.64ms. Allocated memory was 151.0MB in the beginning and 234.9MB in the end (delta: 83.9MB). Free memory was 80.2MB in the beginning and 84.0MB in the end (delta: -3.8MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. * Witness Printer took 4.38ms. Allocated memory is still 234.9MB. Free memory is still 83.0MB. 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 12 terminating modules (8 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 10 locations. 8 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 23.2s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 13.6s. Construction of modules took 2.0s. Büchi inclusion checks took 7.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 264 StatesRemovedByMinimization, 11 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, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 676 mSDsluCounter, 985 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 655 mSDsCounter, 355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2158 IncrementalHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 355 mSolverCounterUnsat, 330 mSDtfsCounter, 2158 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp95 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp83 dnf100 smp100 tf111 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 54ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 10:57:39,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:39,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:39,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-11-20 10:57:39,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-11-20 10:57:40,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-11-20 10:57:40,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-11-20 10:57:40,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-20 10:57:40,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-20 10:57:40,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:41,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 10:57:41,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4b4b4c-d5e1-4ee0-8a63-43d211757e08/bin/uautomizer-ug76WZFUDN/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