./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:53:28,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:53:28,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:53:28,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:53:28,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:53:28,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:53:28,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:53:28,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:53:28,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:53:28,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:53:28,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:53:28,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:53:28,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:53:28,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:53:28,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:53:28,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:53:28,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:53:28,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:53:28,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:53:28,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:53:28,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:53:28,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:53:28,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:53:28,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:53:28,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:53:28,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:53:28,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:53:28,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:53:28,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:53:28,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:53:28,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:53:28,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:53:28,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:53:28,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:53:28,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:53:28,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:53:28,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:53:28,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:53:28,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:53:28,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:53:28,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:53:28,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 17:53:28,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:53:28,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:53:28,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:53:28,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:53:28,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:53:28,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:53:28,442 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:53:28,442 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 17:53:28,442 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 17:53:28,450 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 17:53:28,450 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 17:53:28,450 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 17:53:28,450 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 17:53:28,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:53:28,451 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:53:28,451 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:53:28,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:53:28,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:53:28,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:53:28,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 17:53:28,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 17:53:28,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 17:53:28,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:53:28,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:53:28,452 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 17:53:28,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:53:28,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 17:53:28,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:53:28,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:53:28,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:53:28,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:53:28,454 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 17:53:28,454 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_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 [2022-12-13 17:53:28,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:53:28,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:53:28,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:53:28,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:53:28,642 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:53:28,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2022-12-13 17:53:31,265 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:53:31,425 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:53:31,425 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2022-12-13 17:53:31,429 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/data/f0932ec37/aa64d64effd64e638107091e64153c68/FLAGd6e0a37cb [2022-12-13 17:53:31,847 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/data/f0932ec37/aa64d64effd64e638107091e64153c68 [2022-12-13 17:53:31,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:53:31,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:53:31,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:53:31,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:53:31,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:53:31,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:53:31" (1/1) ... [2022-12-13 17:53:31,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114a127e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:31, skipping insertion in model container [2022-12-13 17:53:31,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:53:31" (1/1) ... [2022-12-13 17:53:31,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:53:31,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:53:31,976 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_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2022-12-13 17:53:31,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:53:31,986 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:53:31,996 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_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2022-12-13 17:53:31,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:53:32,006 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:53:32,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32 WrapperNode [2022-12-13 17:53:32,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:53:32,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:53:32,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:53:32,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:53:32,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,029 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-12-13 17:53:32,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:53:32,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:53:32,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:53:32,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:53:32,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,041 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:53:32,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:53:32,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:53:32,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:53:32,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (1/1) ... [2022-12-13 17:53:32,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 17:53:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:53:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:53:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-12-13 17:53:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-12-13 17:53:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-12-13 17:53:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-12-13 17:53:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:53:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:53:32,162 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:53:32,164 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:53:32,249 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:53:32,255 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:53:32,255 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:53:32,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:53:32 BoogieIcfgContainer [2022-12-13 17:53:32,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:53:32,258 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 17:53:32,258 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 17:53:32,261 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 17:53:32,262 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 17:53:32,262 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 05:53:31" (1/3) ... [2022-12-13 17:53:32,263 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68a0bf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 05:53:32, skipping insertion in model container [2022-12-13 17:53:32,263 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 17:53:32,263 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:53:32" (2/3) ... [2022-12-13 17:53:32,264 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68a0bf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 05:53:32, skipping insertion in model container [2022-12-13 17:53:32,264 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 17:53:32,264 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:53:32" (3/3) ... [2022-12-13 17:53:32,265 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-1.c [2022-12-13 17:53:32,320 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 17:53:32,320 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 17:53:32,320 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 17:53:32,320 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 17:53:32,320 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 17:53:32,320 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 17:53:32,321 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 17:53:32,321 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 17:53:32,325 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) [2022-12-13 17:53:32,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:53:32,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:32,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:32,353 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 17:53:32,353 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:32,353 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 17:53:32,354 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) [2022-12-13 17:53:32,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:53:32,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:32,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:32,358 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 17:53:32,358 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:32,365 INFO L748 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 12#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17#$Ultimate##0true [2022-12-13 17:53:32,366 INFO L750 eck$LassoCheckResult]: Loop: 17#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 14#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 13#L22true assume !(1 == ~n); 20#L25true call #t~ret6 := fibo1(~n - 1);< 17#$Ultimate##0true [2022-12-13 17:53:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-12-13 17:53:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:32,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286143828] [2022-12-13 17:53:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:32,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:32,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:32,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-12-13 17:53:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:32,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261831866] [2022-12-13 17:53:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:32,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:32,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-12-13 17:53:32,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:32,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683851692] [2022-12-13 17:53:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:32,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:32,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:32,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:32,703 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:32,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:32,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:32,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:32,705 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:53:32,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:32,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:32,705 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2022-12-13 17:53:32,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:32,706 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:32,721 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,729 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,731 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,733 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,735 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,741 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:32,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:32,787 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:53:32,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 17:53:32,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:32,808 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:32,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 17:53:32,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,828 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:32,828 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:32,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 17:53:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 17:53:32,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,846 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:32,846 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:32,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 17:53:32,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 17:53:32,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:32,865 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:32,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:32,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 17:53:32,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,883 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:32,883 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:32,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:32,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 17:53:32,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,901 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:32,901 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:32,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 17:53:32,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 17:53:32,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:32,924 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:32,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 17:53:32,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:32,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:32,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 17:53:32,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:32,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:32,945 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:32,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 17:53:32,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:53:32,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:33,006 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:53:33,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:33,009 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:33,009 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:33,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:33,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:33,009 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:53:33,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:33,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:33,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2022-12-13 17:53:33,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:33,010 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:33,011 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,014 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,016 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,018 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,019 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,021 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,028 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,030 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:33,059 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:33,063 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:53:33,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 17:53:33,067 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:33,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:33,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:33,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:33,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:33,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:33,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:33,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:33,082 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:33,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:33,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 17:53:33,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:33,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:33,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:33,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:33,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:33,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:33,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:33,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:33,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:33,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:33,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,105 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 17:53:33,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:33,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:33,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:33,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:33,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:33,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:33,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:33,117 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:33,118 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:33,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,122 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 17:53:33,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:33,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:33,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:33,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:33,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:33,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:33,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:33,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:33,136 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:33,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 17:53:33,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,140 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 17:53:33,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:33,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:33,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:33,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:33,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:33,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:33,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:33,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:33,155 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:33,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 17:53:33,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,158 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 17:53:33,160 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:33,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:33,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:33,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:33,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:33,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:33,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:33,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:33,173 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:53:33,177 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 17:53:33,177 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 17:53:33,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:33,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,217 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 17:53:33,219 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:53:33,219 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:53:33,219 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:53:33,220 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-12-13 17:53:33,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:33,226 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:53:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:53:33,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:53:33,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:33,384 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 [2022-12-13 17:53:33,386 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) [2022-12-13 17:53:33,530 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. [2022-12-13 17:53:33,532 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 [2022-12-13 17:53:33,535 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) [2022-12-13 17:53:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-12-13 17:53:33,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-12-13 17:53:33,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:33,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-12-13 17:53:33,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:33,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-12-13 17:53:33,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:33,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-12-13 17:53:33,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:53:33,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-12-13 17:53:33,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-12-13 17:53:33,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-12-13 17:53:33,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-12-13 17:53:33,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:33,550 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-12-13 17:53:33,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-12-13 17:53:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-12-13 17:53:33,571 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) [2022-12-13 17:53:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-12-13 17:53:33,573 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 17:53:33,573 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 17:53:33,573 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 17:53:33,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-12-13 17:53:33,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:53:33,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:33,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:33,575 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:33,575 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:33,575 INFO L748 eck$LassoCheckResult]: Stem: 234#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 221#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; 216#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 215#$Ultimate##0 ~n := #in~n; 217#L10 assume !(~n < 1); 227#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 231#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 201#L25 call #t~ret6 := fibo1(~n - 1);< 218#$Ultimate##0 ~n := #in~n; 220#L10 assume ~n < 1;#res := 0; 207#fibo1FINAL assume true; 208#fibo1EXIT >#46#return; 209#L25-1 [2022-12-13 17:53:33,575 INFO L750 eck$LassoCheckResult]: Loop: 209#L25-1 call #t~ret7 := fibo1(~n - 2);< 214#$Ultimate##0 ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 223#$Ultimate##0 ~n := #in~n; 243#L20 assume !(~n < 1); 244#L22 assume !(1 == ~n); 222#L25 call #t~ret6 := fibo1(~n - 1);< 214#$Ultimate##0 ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 236#fibo1FINAL assume true; 237#fibo1EXIT >#46#return; 209#L25-1 [2022-12-13 17:53:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-12-13 17:53:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:33,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596623344] [2022-12-13 17:53:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:53:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:53:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:33,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596623344] [2022-12-13 17:53:33,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596623344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:53:33,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:53:33,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:53:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559798901] [2022-12-13 17:53:33,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:53:33,677 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:53:33,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-12-13 17:53:33,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:33,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547208145] [2022-12-13 17:53:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:33,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:53:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:53:33,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:33,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547208145] [2022-12-13 17:53:33,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547208145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:53:33,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:53:33,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:53:33,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983335845] [2022-12-13 17:53:33,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:53:33,733 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:53:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:33,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:53:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:53:33,737 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) [2022-12-13 17:53:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:33,791 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-12-13 17:53:33,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-12-13 17:53:33,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:53:33,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-12-13 17:53:33,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-12-13 17:53:33,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-12-13 17:53:33,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-12-13 17:53:33,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:33,795 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-12-13 17:53:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-12-13 17:53:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-12-13 17:53:33,798 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) [2022-12-13 17:53:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-12-13 17:53:33,799 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 17:53:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:53:33,800 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 17:53:33,800 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 17:53:33,800 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-12-13 17:53:33,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:53:33,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:33,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:33,802 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:33,802 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:33,802 INFO L748 eck$LassoCheckResult]: Stem: 379#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 362#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 363#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 364#$Ultimate##0 ~n := #in~n; 365#L10 assume !(~n < 1); 393#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 377#$Ultimate##0 ~n := #in~n; 394#L20 assume !(~n < 1); 395#L22 assume !(1 == ~n); 346#L25 call #t~ret6 := fibo1(~n - 1);< 366#$Ultimate##0 ~n := #in~n; 368#L10 assume !(~n < 1); 371#L12 assume 1 == ~n;#res := 1; 372#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 353#L25-1 [2022-12-13 17:53:33,802 INFO L750 eck$LassoCheckResult]: Loop: 353#L25-1 call #t~ret7 := fibo1(~n - 2);< 360#$Ultimate##0 ~n := #in~n; 386#L10 assume !(~n < 1); 385#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 390#$Ultimate##0 ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 354#L25 call #t~ret6 := fibo1(~n - 1);< 360#$Ultimate##0 ~n := #in~n; 386#L10 assume !(~n < 1); 385#L12 assume 1 == ~n;#res := 1; 382#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 353#L25-1 [2022-12-13 17:53:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-12-13 17:53:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:33,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103317842] [2022-12-13 17:53:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 17:53:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:53:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:33,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103317842] [2022-12-13 17:53:33,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103317842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:33,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940850316] [2022-12-13 17:53:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:33,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:33,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:33,900 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:33,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:53:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:33,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:53:33,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:33,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:34,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940850316] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:34,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:34,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-12-13 17:53:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628021281] [2022-12-13 17:53:34,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:34,034 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:53:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-12-13 17:53:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:34,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925130631] [2022-12-13 17:53:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:34,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:34,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:34,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:34,178 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:34,178 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:34,178 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:34,178 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:34,178 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:53:34,178 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:34,178 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:34,178 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:34,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2022-12-13 17:53:34,179 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:34,179 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:34,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,181 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,183 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,184 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,185 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,190 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,193 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:34,224 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:34,224 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:53:34,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:34,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:34,226 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:34,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 17:53:34,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:34,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:34,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:34,240 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:34,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 17:53:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:34,244 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:34,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 17:53:34,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:34,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:34,257 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:34,258 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:34,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 17:53:34,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:34,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:34,262 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:34,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 17:53:34,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:34,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:34,276 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:34,276 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:34,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 17:53:34,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:34,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:34,280 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:34,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 17:53:34,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:34,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:34,294 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:34,294 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:34,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 17:53:34,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:34,298 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:34,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 17:53:34,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:34,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:34,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 17:53:34,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:34,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:34,316 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:34,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 17:53:34,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:53:34,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:35,471 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:53:35,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:35,475 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:35,475 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:35,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:35,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:35,475 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:53:35,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:35,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:35,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:35,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2022-12-13 17:53:35,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:35,475 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:35,476 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,478 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,479 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,480 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,484 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,486 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,487 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,488 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:35,517 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:35,517 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:53:35,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:35,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:35,518 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:35,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 17:53:35,520 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:35,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:35,530 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:35,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:35,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:35,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:35,531 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:35,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:35,532 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:35,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 17:53:35,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:35,535 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:35,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 17:53:35,537 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:35,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:35,547 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:35,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:35,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:35,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:35,548 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:35,548 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:35,549 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:35,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 17:53:35,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:35,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:35,552 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:35,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 17:53:35,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:35,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:35,564 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:35,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:35,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:35,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:35,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:35,565 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:35,566 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:35,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:35,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:35,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:35,570 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:35,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 17:53:35,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:35,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:35,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:35,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:35,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:35,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:35,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:35,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:35,585 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:53:35,588 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 17:53:35,588 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 17:53:35,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:35,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:35,590 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:35,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 17:53:35,591 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:53:35,591 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:53:35,591 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:53:35,591 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-12-13 17:53:35,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 17:53:35,594 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:53:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:35,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:53:35,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:35,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:53:35,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:35,777 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 [2022-12-13 17:53:35,777 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) [2022-12-13 17:53:36,050 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. [2022-12-13 17:53:36,050 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 [2022-12-13 17:53:36,051 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) [2022-12-13 17:53:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-12-13 17:53:36,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-12-13 17:53:36,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:36,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-12-13 17:53:36,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:36,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-12-13 17:53:36,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:36,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-12-13 17:53:36,058 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 17:53:36,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-12-13 17:53:36,062 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-12-13 17:53:36,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-12-13 17:53:36,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-12-13 17:53:36,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:36,064 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-12-13 17:53:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-12-13 17:53:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-12-13 17:53:36,075 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) [2022-12-13 17:53:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-12-13 17:53:36,077 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-12-13 17:53:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:36,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:53:36,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:53:36,077 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) [2022-12-13 17:53:36,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-12-13 17:53:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:36,173 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2022-12-13 17:53:36,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 247 transitions. [2022-12-13 17:53:36,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 17:53:36,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 243 transitions. [2022-12-13 17:53:36,180 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2022-12-13 17:53:36,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2022-12-13 17:53:36,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 243 transitions. [2022-12-13 17:53:36,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:36,181 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 243 transitions. [2022-12-13 17:53:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 243 transitions. [2022-12-13 17:53:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2022-12-13 17:53:36,190 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) [2022-12-13 17:53:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2022-12-13 17:53:36,192 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-12-13 17:53:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:53:36,193 INFO L428 stractBuchiCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-12-13 17:53:36,193 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 17:53:36,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 225 transitions. [2022-12-13 17:53:36,195 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 17:53:36,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:36,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:36,196 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] [2022-12-13 17:53:36,196 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:36,196 INFO L748 eck$LassoCheckResult]: Stem: 1265#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1237#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1238#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1268#$Ultimate##0 ~n := #in~n; 1260#L10 assume !(~n < 1); 1253#L12 assume !(1 == ~n); 1225#L15 call #t~ret4 := fibo2(~n - 1);< 1261#$Ultimate##0 ~n := #in~n; 1263#L20 assume !(~n < 1); 1264#L22 assume !(1 == ~n); 1239#L25 call #t~ret6 := fibo1(~n - 1);< 1240#$Ultimate##0 ~n := #in~n; 1298#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1303#L15 call #t~ret4 := fibo2(~n - 1);< 1310#$Ultimate##0 ~n := #in~n; 1313#L20 assume ~n < 1;#res := 0; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#50#return; 1307#L15-1 call #t~ret5 := fibo2(~n - 2);< 1308#$Ultimate##0 ~n := #in~n; 1315#L20 assume ~n < 1;#res := 0; 1312#fibo2FINAL assume true; 1306#fibo2EXIT >#52#return; 1304#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1305#fibo1FINAL assume true; 1362#fibo1EXIT >#46#return; 1218#L25-1 call #t~ret7 := fibo1(~n - 2);< 1295#$Ultimate##0 ~n := #in~n; 1325#L10 assume ~n < 1;#res := 0; 1217#fibo1FINAL assume true; 1220#fibo1EXIT >#48#return; 1232#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1241#fibo2FINAL assume true; 1254#fibo2EXIT >#50#return; 1201#L15-1 call #t~ret5 := fibo2(~n - 2);< 1323#$Ultimate##0 [2022-12-13 17:53:36,197 INFO L750 eck$LassoCheckResult]: Loop: 1323#$Ultimate##0 ~n := #in~n; 1317#L20 assume !(~n < 1); 1200#L22 assume !(1 == ~n); 1205#L25 call #t~ret6 := fibo1(~n - 1);< 1226#$Ultimate##0 ~n := #in~n; 1234#L10 assume !(~n < 1); 1259#L12 assume !(1 == ~n); 1202#L15 call #t~ret4 := fibo2(~n - 1);< 1323#$Ultimate##0 [2022-12-13 17:53:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 613030308, now seen corresponding path program 1 times [2022-12-13 17:53:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:36,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310516974] [2022-12-13 17:53:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:53:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:53:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:53:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:53:36,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:36,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310516974] [2022-12-13 17:53:36,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310516974] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:36,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393041734] [2022-12-13 17:53:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:36,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:36,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,298 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 17:53:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:36,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:53:36,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:53:36,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:53:36,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393041734] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:36,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:36,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2022-12-13 17:53:36,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872415025] [2022-12-13 17:53:36,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:36,643 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:53:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-12-13 17:53:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:36,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831701993] [2022-12-13 17:53:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:36,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:36,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:36,715 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:36,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:36,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:36,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:36,715 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:53:36,715 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:36,715 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:36,715 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2022-12-13 17:53:36,715 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:36,715 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:36,716 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,717 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,719 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,720 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,721 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,722 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,728 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,763 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:36,763 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:53:36,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,764 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 17:53:36,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:36,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,779 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:36,779 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:36,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-12-13 17:53:36,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,783 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 17:53:36,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:36,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,797 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:36,798 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:36,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-12-13 17:53:36,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,802 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-12-13 17:53:36,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:36,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:36,816 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:36,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-12-13 17:53:36,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,819 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 17:53:36,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:36,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,833 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:36,833 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:36,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-12-13 17:53:36,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,836 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 17:53:36,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:36,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:36,850 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:36,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:36,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,853 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 17:53:36,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:36,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,867 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:36,867 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:36,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:36,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,870 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 17:53:36,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:36,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-12-13 17:53:36,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,888 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 17:53:36,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:53:36,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:36,948 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:53:36,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-12-13 17:53:36,951 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:36,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:36,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:36,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:36,952 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:53:36,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:36,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:36,952 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2022-12-13 17:53:36,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:36,952 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:36,952 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,956 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,957 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,959 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,961 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,962 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:36,996 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:36,996 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:53:36,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:36,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:36,997 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:36,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-12-13 17:53:36,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,011 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:37,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-12-13 17:53:37,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,015 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-12-13 17:53:37,017 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,029 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:37,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:37,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,032 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-12-13 17:53:37,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,046 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:37,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-12-13 17:53:37,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,050 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-12-13 17:53:37,052 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,064 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:37,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,067 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-12-13 17:53:37,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,081 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:37,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-12-13 17:53:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,084 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-12-13 17:53:37,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,099 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:37,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:37,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,102 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-12-13 17:53:37,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:37,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:37,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,119 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-12-13 17:53:37,121 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:37,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:37,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:37,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:37,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:37,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:37,132 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:37,132 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:37,134 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:53:37,136 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 17:53:37,136 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 17:53:37,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:37,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:37,137 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:37,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-12-13 17:53:37,139 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:53:37,139 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:53:37,139 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:53:37,139 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-12-13 17:53:37,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-12-13 17:53:37,142 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:53:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:37,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2022-12-13 17:53:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:37,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:53:37,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:37,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:53:37,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:37,477 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 [2022-12-13 17:53:37,477 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) [2022-12-13 17:53:37,605 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. [2022-12-13 17:53:37,605 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 [2022-12-13 17:53:37,606 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) [2022-12-13 17:53:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-12-13 17:53:37,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-12-13 17:53:37,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:37,606 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:53:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:37,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:53:37,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:37,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:53:37,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:37,905 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 [2022-12-13 17:53:37,905 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) [2022-12-13 17:53:37,996 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. [2022-12-13 17:53:37,996 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 [2022-12-13 17:53:37,997 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) [2022-12-13 17:53:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-12-13 17:53:37,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-12-13 17:53:37,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:37,998 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:53:38,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:53:38,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:53:38,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:38,286 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 [2022-12-13 17:53:38,286 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) [2022-12-13 17:53:38,410 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. [2022-12-13 17:53:38,411 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 [2022-12-13 17:53:38,411 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) [2022-12-13 17:53:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-12-13 17:53:38,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 8 letters. [2022-12-13 17:53:38,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:38,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 17:53:38,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:38,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 16 letters. [2022-12-13 17:53:38,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:38,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 553 states and 762 transitions. [2022-12-13 17:53:38,417 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-12-13 17:53:38,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 553 states to 445 states and 639 transitions. [2022-12-13 17:53:38,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2022-12-13 17:53:38,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2022-12-13 17:53:38,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 639 transitions. [2022-12-13 17:53:38,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:38,434 INFO L218 hiAutomatonCegarLoop]: Abstraction has 445 states and 639 transitions. [2022-12-13 17:53:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 639 transitions. [2022-12-13 17:53:38,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 370. [2022-12-13 17:53:38,456 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) [2022-12-13 17:53:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions. [2022-12-13 17:53:38,459 INFO L240 hiAutomatonCegarLoop]: Abstraction has 370 states and 507 transitions. [2022-12-13 17:53:38,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:53:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:53:38,460 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) [2022-12-13 17:53:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:38,657 INFO L93 Difference]: Finished difference Result 449 states and 635 transitions. [2022-12-13 17:53:38,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 635 transitions. [2022-12-13 17:53:38,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:53:38,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 410 states and 591 transitions. [2022-12-13 17:53:38,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2022-12-13 17:53:38,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 229 [2022-12-13 17:53:38,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 591 transitions. [2022-12-13 17:53:38,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:38,666 INFO L218 hiAutomatonCegarLoop]: Abstraction has 410 states and 591 transitions. [2022-12-13 17:53:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 591 transitions. [2022-12-13 17:53:38,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 359. [2022-12-13 17:53:38,675 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) [2022-12-13 17:53:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 496 transitions. [2022-12-13 17:53:38,677 INFO L240 hiAutomatonCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-12-13 17:53:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:53:38,678 INFO L428 stractBuchiCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-12-13 17:53:38,678 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 17:53:38,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 496 transitions. [2022-12-13 17:53:38,680 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:53:38,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:38,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:38,681 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] [2022-12-13 17:53:38,681 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] [2022-12-13 17:53:38,681 INFO L748 eck$LassoCheckResult]: Stem: 4982#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4942#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4943#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4985#$Ultimate##0 ~n := #in~n; 5104#L10 assume !(~n < 1); 5103#L12 assume !(1 == ~n); 5040#L15 call #t~ret4 := fibo2(~n - 1);< 5102#$Ultimate##0 ~n := #in~n; 5101#L20 assume !(~n < 1); 5100#L22 assume !(1 == ~n); 4954#L25 call #t~ret6 := fibo1(~n - 1);< 5037#$Ultimate##0 ~n := #in~n; 5039#L10 assume !(~n < 1); 5122#L12 assume !(1 == ~n); 5097#L15 call #t~ret4 := fibo2(~n - 1);< 5146#$Ultimate##0 ~n := #in~n; 5152#L20 assume !(~n < 1); 5149#L22 assume 1 == ~n;#res := 1; 5148#fibo2FINAL assume true; 5145#fibo2EXIT >#50#return; 4951#L15-1 call #t~ret5 := fibo2(~n - 2);< 4955#$Ultimate##0 ~n := #in~n; 5128#L20 assume ~n < 1;#res := 0; 5125#fibo2FINAL assume true; 5123#fibo2EXIT >#52#return; 5121#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5119#fibo1FINAL assume true; 5117#fibo1EXIT >#46#return; 5090#L25-1 call #t~ret7 := fibo1(~n - 2);< 5113#$Ultimate##0 ~n := #in~n; 5244#L10 assume ~n < 1;#res := 0; 5196#fibo1FINAL assume true; 5153#fibo1EXIT >#48#return; 5151#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5147#fibo2EXIT >#50#return; 4910#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 [2022-12-13 17:53:38,681 INFO L750 eck$LassoCheckResult]: Loop: 5106#$Ultimate##0 ~n := #in~n; 4921#L20 assume !(~n < 1); 4908#L22 assume !(1 == ~n); 4914#L25 call #t~ret6 := fibo1(~n - 1);< 5130#$Ultimate##0 ~n := #in~n; 5126#L10 assume !(~n < 1); 5127#L12 assume !(1 == ~n); 4909#L15 call #t~ret4 := fibo2(~n - 1);< 4920#$Ultimate##0 ~n := #in~n; 4921#L20 assume !(~n < 1); 4908#L22 assume !(1 == ~n); 4914#L25 call #t~ret6 := fibo1(~n - 1);< 5130#$Ultimate##0 ~n := #in~n; 5126#L10 assume !(~n < 1); 5127#L12 assume !(1 == ~n); 4909#L15 call #t~ret4 := fibo2(~n - 1);< 4920#$Ultimate##0 ~n := #in~n; 4922#L20 assume !(~n < 1); 5175#L22 assume 1 == ~n;#res := 1; 5173#fibo2FINAL assume true; 5172#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5200#fibo2FINAL assume true; 5169#fibo2EXIT >#52#return; 5139#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5162#fibo1FINAL assume true; 5160#fibo1EXIT >#46#return; 5157#L25-1 call #t~ret7 := fibo1(~n - 2);< 5161#$Ultimate##0 ~n := #in~n; 5189#L10 assume !(~n < 1); 5184#L12 assume !(1 == ~n); 5138#L15 call #t~ret4 := fibo2(~n - 1);< 5166#$Ultimate##0 ~n := #in~n; 5165#L20 assume !(~n < 1); 5163#L22 assume !(1 == ~n); 5156#L25 call #t~ret6 := fibo1(~n - 1);< 5161#$Ultimate##0 ~n := #in~n; 5189#L10 assume !(~n < 1); 5184#L12 assume !(1 == ~n); 5138#L15 call #t~ret4 := fibo2(~n - 1);< 5166#$Ultimate##0 ~n := #in~n; 5165#L20 assume !(~n < 1); 5163#L22 assume 1 == ~n;#res := 1; 5164#fibo2FINAL assume true; 5170#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5200#fibo2FINAL assume true; 5169#fibo2EXIT >#52#return; 5139#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5162#fibo1FINAL assume true; 5160#fibo1EXIT >#46#return; 5157#L25-1 call #t~ret7 := fibo1(~n - 2);< 5161#$Ultimate##0 ~n := #in~n; 5189#L10 assume ~n < 1;#res := 0; 5190#fibo1FINAL assume true; 5155#fibo1EXIT >#48#return; 5159#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5201#fibo2FINAL assume true; 5136#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5200#fibo2FINAL assume true; 5169#fibo2EXIT >#52#return; 5139#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5162#fibo1FINAL assume true; 5160#fibo1EXIT >#48#return; 5159#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5201#fibo2FINAL assume true; 5136#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 [2022-12-13 17:53:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1718474001, now seen corresponding path program 1 times [2022-12-13 17:53:38,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:38,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466389756] [2022-12-13 17:53:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:38,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:53:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:53:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:53:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466389756] [2022-12-13 17:53:38,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466389756] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14277326] [2022-12-13 17:53:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:38,810 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:38,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 17:53:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:38,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:53:38,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:53:38,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:53:39,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14277326] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:39,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:39,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2022-12-13 17:53:39,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361040271] [2022-12-13 17:53:39,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:39,012 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:53:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 688787707, now seen corresponding path program 1 times [2022-12-13 17:53:39,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:39,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072569076] [2022-12-13 17:53:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:39,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:53:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:53:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:53:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:53:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 17:53:39,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:39,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072569076] [2022-12-13 17:53:39,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072569076] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509693503] [2022-12-13 17:53:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:39,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:39,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:39,253 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:39,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 17:53:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:53:39,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 17:53:39,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 17:53:39,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509693503] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:39,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:39,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-12-13 17:53:39,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274123836] [2022-12-13 17:53:39,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:39,606 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:53:39,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:39,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:53:39,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:53:39,607 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) [2022-12-13 17:53:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:39,733 INFO L93 Difference]: Finished difference Result 387 states and 546 transitions. [2022-12-13 17:53:39,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 546 transitions. [2022-12-13 17:53:39,737 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:53:39,741 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 387 states and 546 transitions. [2022-12-13 17:53:39,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 209 [2022-12-13 17:53:39,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 209 [2022-12-13 17:53:39,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 387 states and 546 transitions. [2022-12-13 17:53:39,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:39,742 INFO L218 hiAutomatonCegarLoop]: Abstraction has 387 states and 546 transitions. [2022-12-13 17:53:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states and 546 transitions. [2022-12-13 17:53:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2022-12-13 17:53:39,753 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) [2022-12-13 17:53:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2022-12-13 17:53:39,756 INFO L240 hiAutomatonCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-12-13 17:53:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:53:39,757 INFO L428 stractBuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-12-13 17:53:39,757 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 17:53:39,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2022-12-13 17:53:39,759 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:53:39,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:39,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:39,761 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] [2022-12-13 17:53:39,761 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] [2022-12-13 17:53:39,762 INFO L748 eck$LassoCheckResult]: Stem: 6684#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6644#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6645#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6686#$Ultimate##0 ~n := #in~n; 6742#L10 assume !(~n < 1); 6741#L12 assume !(1 == ~n); 6730#L15 call #t~ret4 := fibo2(~n - 1);< 6740#$Ultimate##0 ~n := #in~n; 6739#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6654#L25 call #t~ret6 := fibo1(~n - 1);< 6731#$Ultimate##0 ~n := #in~n; 6721#L10 assume !(~n < 1); 6722#L12 assume !(1 == ~n); 6707#L15 call #t~ret4 := fibo2(~n - 1);< 6708#$Ultimate##0 ~n := #in~n; 6728#L20 assume !(~n < 1); 6729#L22 assume !(1 == ~n); 6656#L25 call #t~ret6 := fibo1(~n - 1);< 6731#$Ultimate##0 ~n := #in~n; 6737#L10 assume !(~n < 1); 6835#L12 assume 1 == ~n;#res := 1; 6832#fibo1FINAL assume true; 6830#fibo1EXIT >#46#return; 6803#L25-1 call #t~ret7 := fibo1(~n - 2);< 6807#$Ultimate##0 ~n := #in~n; 6904#L10 assume ~n < 1;#res := 0; 6905#fibo1FINAL assume true; 6952#fibo1EXIT >#48#return; 6900#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6941#fibo2FINAL assume true; 6848#fibo2EXIT >#50#return; 6849#L15-1 [2022-12-13 17:53:39,762 INFO L750 eck$LassoCheckResult]: Loop: 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6881#L20 assume !(~n < 1); 6880#L22 assume !(1 == ~n); 6637#L25 call #t~ret6 := fibo1(~n - 1);< 6828#$Ultimate##0 ~n := #in~n; 6826#L10 assume !(~n < 1); 6827#L12 assume !(1 == ~n); 6856#L15 call #t~ret4 := fibo2(~n - 1);< 6866#$Ultimate##0 ~n := #in~n; 6881#L20 assume !(~n < 1); 6880#L22 assume !(1 == ~n); 6637#L25 call #t~ret6 := fibo1(~n - 1);< 6828#$Ultimate##0 ~n := #in~n; 6826#L10 assume !(~n < 1); 6827#L12 assume !(1 == ~n); 6856#L15 call #t~ret4 := fibo2(~n - 1);< 6866#$Ultimate##0 ~n := #in~n; 6882#L20 assume !(~n < 1); 6915#L22 assume 1 == ~n;#res := 1; 6914#fibo2FINAL assume true; 6910#fibo2EXIT >#50#return; 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6883#L20 assume ~n < 1;#res := 0; 6890#fibo2FINAL assume true; 6907#fibo2EXIT >#52#return; 6850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6934#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6862#L25-1 call #t~ret7 := fibo1(~n - 2);< 6875#$Ultimate##0 ~n := #in~n; 6924#L10 assume !(~n < 1); 6918#L12 assume !(1 == ~n); 6858#L15 call #t~ret4 := fibo2(~n - 1);< 6865#$Ultimate##0 ~n := #in~n; 6896#L20 assume !(~n < 1); 6893#L22 assume !(1 == ~n); 6863#L25 call #t~ret6 := fibo1(~n - 1);< 6875#$Ultimate##0 ~n := #in~n; 6924#L10 assume !(~n < 1); 6918#L12 assume !(1 == ~n); 6858#L15 call #t~ret4 := fibo2(~n - 1);< 6865#$Ultimate##0 ~n := #in~n; 6896#L20 assume !(~n < 1); 6893#L22 assume 1 == ~n;#res := 1; 6894#fibo2FINAL assume true; 6909#fibo2EXIT >#50#return; 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6883#L20 assume ~n < 1;#res := 0; 6890#fibo2FINAL assume true; 6907#fibo2EXIT >#52#return; 6850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6934#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6862#L25-1 call #t~ret7 := fibo1(~n - 2);< 6875#$Ultimate##0 ~n := #in~n; 6924#L10 assume !(~n < 1); 6918#L12 assume 1 == ~n;#res := 1; 6897#fibo1FINAL assume true; 6879#fibo1EXIT >#48#return; 6867#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6864#fibo2FINAL assume true; 6854#fibo2EXIT >#50#return; 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6883#L20 assume ~n < 1;#res := 0; 6890#fibo2FINAL assume true; 6907#fibo2EXIT >#52#return; 6850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6934#fibo1FINAL assume true; 6868#fibo1EXIT >#48#return; 6867#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6864#fibo2FINAL assume true; 6854#fibo2EXIT >#50#return; 6849#L15-1 [2022-12-13 17:53:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:39,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-12-13 17:53:39,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:39,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424374063] [2022-12-13 17:53:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:39,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:53:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:53:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:39,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424374063] [2022-12-13 17:53:39,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424374063] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:39,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171233147] [2022-12-13 17:53:39,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:39,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:39,872 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:39,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-13 17:53:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:39,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 17:53:39,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:53:39,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:53:40,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171233147] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:40,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:40,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2022-12-13 17:53:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584642970] [2022-12-13 17:53:40,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:40,084 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:53:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 651349219, now seen corresponding path program 1 times [2022-12-13 17:53:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:40,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763304938] [2022-12-13 17:53:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:40,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:53:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:53:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:53:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 17:53:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 17:53:40,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:40,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763304938] [2022-12-13 17:53:40,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763304938] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:40,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498123050] [2022-12-13 17:53:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:40,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:40,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:40,242 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:40,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-12-13 17:53:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:53:40,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 17:53:40,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 17:53:40,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498123050] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:40,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:40,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-12-13 17:53:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409613532] [2022-12-13 17:53:40,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:40,610 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:53:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 17:53:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:53:40,610 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) [2022-12-13 17:53:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:40,813 INFO L93 Difference]: Finished difference Result 400 states and 493 transitions. [2022-12-13 17:53:40,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 493 transitions. [2022-12-13 17:53:40,818 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-12-13 17:53:40,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 235 states and 273 transitions. [2022-12-13 17:53:40,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2022-12-13 17:53:40,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2022-12-13 17:53:40,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 273 transitions. [2022-12-13 17:53:40,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:40,821 INFO L218 hiAutomatonCegarLoop]: Abstraction has 235 states and 273 transitions. [2022-12-13 17:53:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states and 273 transitions. [2022-12-13 17:53:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 218. [2022-12-13 17:53:40,826 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) [2022-12-13 17:53:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2022-12-13 17:53:40,826 INFO L240 hiAutomatonCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-12-13 17:53:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:53:40,827 INFO L428 stractBuchiCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-12-13 17:53:40,827 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 17:53:40,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 254 transitions. [2022-12-13 17:53:40,828 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:53:40,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:40,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:40,828 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] [2022-12-13 17:53:40,828 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:40,829 INFO L748 eck$LassoCheckResult]: Stem: 8359#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8336#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8337#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8365#$Ultimate##0 ~n := #in~n; 8395#L10 assume !(~n < 1); 8390#L12 assume !(1 == ~n); 8346#L15 call #t~ret4 := fibo2(~n - 1);< 8385#$Ultimate##0 ~n := #in~n; 8382#L20 assume !(~n < 1); 8380#L22 assume !(1 == ~n); 8341#L25 call #t~ret6 := fibo1(~n - 1);< 8375#$Ultimate##0 ~n := #in~n; 8404#L10 assume !(~n < 1); 8400#L12 assume !(1 == ~n); 8393#L15 call #t~ret4 := fibo2(~n - 1);< 8394#$Ultimate##0 ~n := #in~n; 8405#L20 assume !(~n < 1); 8402#L22 assume 1 == ~n;#res := 1; 8397#fibo2FINAL assume true; 8392#fibo2EXIT >#50#return; 8388#L15-1 call #t~ret5 := fibo2(~n - 2);< 8389#$Ultimate##0 ~n := #in~n; 8396#L20 assume ~n < 1;#res := 0; 8391#fibo2FINAL assume true; 8387#fibo2EXIT >#52#return; 8386#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8384#fibo1FINAL assume true; 8373#fibo1EXIT >#46#return; 8367#L25-1 call #t~ret7 := fibo1(~n - 2);< 8369#$Ultimate##0 ~n := #in~n; 8449#L10 assume !(~n < 1); 8445#L12 assume 1 == ~n;#res := 1; 8412#fibo1FINAL assume true; 8366#fibo1EXIT >#48#return; 8345#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8347#fibo2FINAL assume true; 8350#fibo2EXIT >#50#return; 8358#L15-1 [2022-12-13 17:53:40,829 INFO L750 eck$LassoCheckResult]: Loop: 8358#L15-1 call #t~ret5 := fibo2(~n - 2);< 8427#$Ultimate##0 ~n := #in~n; 8423#L20 assume !(~n < 1); 8420#L22 assume !(1 == ~n); 8413#L25 call #t~ret6 := fibo1(~n - 1);< 8417#$Ultimate##0 ~n := #in~n; 8437#L10 assume !(~n < 1); 8438#L12 assume 1 == ~n;#res := 1; 8443#fibo1FINAL assume true; 8442#fibo1EXIT >#46#return; 8430#L25-1 call #t~ret7 := fibo1(~n - 2);< 8441#$Ultimate##0 ~n := #in~n; 8444#L10 assume !(~n < 1); 8434#L12 assume !(1 == ~n); 8414#L15 call #t~ret4 := fibo2(~n - 1);< 8425#$Ultimate##0 ~n := #in~n; 8426#L20 assume !(~n < 1); 8486#L22 assume 1 == ~n;#res := 1; 8484#fibo2FINAL assume true; 8472#fibo2EXIT >#50#return; 8358#L15-1 [2022-12-13 17:53:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash -979062994, now seen corresponding path program 1 times [2022-12-13 17:53:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:40,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028147776] [2022-12-13 17:53:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:40,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:40,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1176615322, now seen corresponding path program 1 times [2022-12-13 17:53:40,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:40,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965105611] [2022-12-13 17:53:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:40,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:53:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:53:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:53:40,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:40,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965105611] [2022-12-13 17:53:40,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965105611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:40,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901876947] [2022-12-13 17:53:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:40,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:40,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:40,873 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:40,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-13 17:53:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:40,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:53:40,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:40,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:53:40,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901876947] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:40,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:40,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-12-13 17:53:40,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026994633] [2022-12-13 17:53:40,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:40,947 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:53:40,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:53:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:53:40,948 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) [2022-12-13 17:53:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:40,993 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2022-12-13 17:53:40,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 213 transitions. [2022-12-13 17:53:40,994 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-12-13 17:53:40,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 160 states and 179 transitions. [2022-12-13 17:53:40,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2022-12-13 17:53:40,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2022-12-13 17:53:40,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 179 transitions. [2022-12-13 17:53:40,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:40,995 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 179 transitions. [2022-12-13 17:53:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 179 transitions. [2022-12-13 17:53:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-12-13 17:53:40,997 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) [2022-12-13 17:53:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2022-12-13 17:53:40,998 INFO L240 hiAutomatonCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-12-13 17:53:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:53:40,998 INFO L428 stractBuchiCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-12-13 17:53:40,999 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-12-13 17:53:40,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 158 states and 177 transitions. [2022-12-13 17:53:41,000 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-12-13 17:53:41,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:41,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:41,000 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] [2022-12-13 17:53:41,000 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:41,001 INFO L748 eck$LassoCheckResult]: Stem: 8912#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8892#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8893#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8915#$Ultimate##0 ~n := #in~n; 8965#L10 assume !(~n < 1); 8964#L12 assume !(1 == ~n); 8895#L15 call #t~ret4 := fibo2(~n - 1);< 8952#$Ultimate##0 ~n := #in~n; 8946#L20 assume !(~n < 1); 8936#L22 assume !(1 == ~n); 8888#L25 call #t~ret6 := fibo1(~n - 1);< 8887#$Ultimate##0 ~n := #in~n; 8890#L10 assume !(~n < 1); 8900#L12 assume !(1 == ~n); 8854#L15 call #t~ret4 := fibo2(~n - 1);< 8860#$Ultimate##0 ~n := #in~n; 8861#L20 assume !(~n < 1); 8853#L22 assume 1 == ~n;#res := 1; 8855#fibo2FINAL assume true; 8908#fibo2EXIT >#50#return; 8898#L15-1 call #t~ret5 := fibo2(~n - 2);< 8899#$Ultimate##0 ~n := #in~n; 8993#L20 assume ~n < 1;#res := 0; 8991#fibo2FINAL assume true; 8989#fibo2EXIT >#52#return; 8987#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8985#fibo1FINAL assume true; 8934#fibo1EXIT >#46#return; 8876#L25-1 call #t~ret7 := fibo1(~n - 2);< 8933#$Ultimate##0 ~n := #in~n; 8979#L10 assume !(~n < 1); 8977#L12 assume 1 == ~n;#res := 1; 8976#fibo1FINAL assume true; 8932#fibo1EXIT >#48#return; 8894#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8896#fibo2FINAL assume true; 9009#fibo2EXIT >#50#return; 8867#L15-1 call #t~ret5 := fibo2(~n - 2);< 8982#$Ultimate##0 [2022-12-13 17:53:41,001 INFO L750 eck$LassoCheckResult]: Loop: 8982#$Ultimate##0 ~n := #in~n; 8980#L20 assume !(~n < 1); 8978#L22 assume !(1 == ~n); 8877#L25 call #t~ret6 := fibo1(~n - 1);< 8975#$Ultimate##0 ~n := #in~n; 8994#L10 assume !(~n < 1); 8990#L12 assume !(1 == ~n); 8866#L15 call #t~ret4 := fibo2(~n - 1);< 8906#$Ultimate##0 ~n := #in~n; 8981#L20 assume !(~n < 1); 9010#L22 assume 1 == ~n;#res := 1; 9008#fibo2FINAL assume true; 9000#fibo2EXIT >#50#return; 8868#L15-1 call #t~ret5 := fibo2(~n - 2);< 8982#$Ultimate##0 [2022-12-13 17:53:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -286181691, now seen corresponding path program 2 times [2022-12-13 17:53:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:41,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78738537] [2022-12-13 17:53:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:41,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:41,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash -767060718, now seen corresponding path program 1 times [2022-12-13 17:53:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:41,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103163912] [2022-12-13 17:53:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:41,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:41,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:53:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:53:41,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:53:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1541383382, now seen corresponding path program 3 times [2022-12-13 17:53:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615680833] [2022-12-13 17:53:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:41,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:53:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:53:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:53:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 17:53:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615680833] [2022-12-13 17:53:41,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615680833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391544928] [2022-12-13 17:53:41,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:53:41,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:41,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,097 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-12-13 17:53:41,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:53:41,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:53:41,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:53:41,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 17:53:41,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 17:53:41,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391544928] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:41,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:41,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 13 [2022-12-13 17:53:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542686092] [2022-12-13 17:53:41,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:41,289 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:41,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:41,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:41,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:41,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:53:41,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:41,290 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:41,290 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2022-12-13 17:53:41,290 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:41,290 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:41,291 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,292 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,293 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,294 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,295 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,296 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,298 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,300 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,318 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:41,318 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:53:41,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,319 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-12-13 17:53:41,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:41,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:41,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:41,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-12-13 17:53:41,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,336 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-12-13 17:53:41,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:41,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,349 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:41,349 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:41,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-12-13 17:53:41,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,352 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-12-13 17:53:41,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:41,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:41,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:41,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-12-13 17:53:41,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,370 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-12-13 17:53:41,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:41,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,383 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:41,383 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:41,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2022-12-13 17:53:41,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,386 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-12-13 17:53:41,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:41,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:41,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:41,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:41,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,403 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-12-13 17:53:41,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:41,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,417 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:53:41,417 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:53:41,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:41,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,420 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-12-13 17:53:41,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:53:41,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-12-13 17:53:41,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,437 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-12-13 17:53:41,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:53:41,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:53:41,453 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:53:41,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:41,455 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:53:41,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:53:41,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:53:41,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:53:41,455 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:53:41,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:53:41,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:53:41,455 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2022-12-13 17:53:41,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:53:41,456 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:53:41,456 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,458 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,459 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,460 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,461 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,462 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,464 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,465 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 17:53:41,484 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:53:41,484 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:53:41,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,485 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-12-13 17:53:41,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:41,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:41,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:41,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:41,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:41,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:41,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:41,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:41,500 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:41,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2022-12-13 17:53:41,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,503 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-12-13 17:53:41,505 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:41,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:41,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:41,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:41,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:41,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:41,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:41,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:41,517 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:41,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2022-12-13 17:53:41,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,520 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-12-13 17:53:41,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:41,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:41,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:41,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:41,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:41,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:41,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:41,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:41,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:41,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2022-12-13 17:53:41,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,538 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-12-13 17:53:41,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:41,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:41,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:41,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:41,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:41,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:41,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:41,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:41,552 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:41,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:41,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,555 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-12-13 17:53:41,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:41,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:41,567 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:41,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:41,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:41,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:41,568 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:41,568 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:41,569 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:53:41,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2022-12-13 17:53:41,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,572 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-12-13 17:53:41,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:53:41,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:53:41,584 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:53:41,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:53:41,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:53:41,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:53:41,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:53:41,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:53:41,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:53:41,589 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 17:53:41,589 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 17:53:41,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:53:41,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,590 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-12-13 17:53:41,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:53:41,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:53:41,592 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:53:41,592 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-12-13 17:53:41,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2022-12-13 17:53:41,595 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:53:41,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:53:41,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:53:41,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:41,878 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 [2022-12-13 17:53:41,878 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) [2022-12-13 17:53:41,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:42,020 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. [2022-12-13 17:53:42,020 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 [2022-12-13 17:53:42,021 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) [2022-12-13 17:53:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-12-13 17:53:42,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-12-13 17:53:42,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:42,021 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:53:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:42,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:53:42,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:42,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:53:42,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:42,320 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 [2022-12-13 17:53:42,320 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) [2022-12-13 17:53:42,454 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. [2022-12-13 17:53:42,454 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 [2022-12-13 17:53:42,455 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) [2022-12-13 17:53:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-12-13 17:53:42,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-12-13 17:53:42,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:42,455 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:53:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:42,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:53:42,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:42,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:53:42,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:53:42,699 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 [2022-12-13 17:53:42,699 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) [2022-12-13 17:53:42,869 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. [2022-12-13 17:53:42,870 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 [2022-12-13 17:53:42,870 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) [2022-12-13 17:53:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 43 transitions. [2022-12-13 17:53:42,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 14 letters. [2022-12-13 17:53:42,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:42,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 52 letters. Loop has 14 letters. [2022-12-13 17:53:42,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:42,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 28 letters. [2022-12-13 17:53:42,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:53:42,872 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 380 transitions. [2022-12-13 17:53:42,873 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-12-13 17:53:42,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 220 states and 255 transitions. [2022-12-13 17:53:42,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2022-12-13 17:53:42,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 100 [2022-12-13 17:53:42,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 255 transitions. [2022-12-13 17:53:42,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:42,875 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 255 transitions. [2022-12-13 17:53:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 255 transitions. [2022-12-13 17:53:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 168. [2022-12-13 17:53:42,877 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) [2022-12-13 17:53:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2022-12-13 17:53:42,878 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 189 transitions. [2022-12-13 17:53:42,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:53:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:53:42,878 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) [2022-12-13 17:53:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:43,000 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2022-12-13 17:53:43,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 198 transitions. [2022-12-13 17:53:43,001 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-12-13 17:53:43,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 159 states and 178 transitions. [2022-12-13 17:53:43,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-12-13 17:53:43,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-12-13 17:53:43,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 178 transitions. [2022-12-13 17:53:43,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:53:43,002 INFO L218 hiAutomatonCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-12-13 17:53:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 178 transitions. [2022-12-13 17:53:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2022-12-13 17:53:43,004 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) [2022-12-13 17:53:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2022-12-13 17:53:43,004 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-12-13 17:53:43,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:53:43,005 INFO L428 stractBuchiCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-12-13 17:53:43,005 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-12-13 17:53:43,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 157 states and 175 transitions. [2022-12-13 17:53:43,005 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-12-13 17:53:43,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:53:43,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:53:43,006 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] [2022-12-13 17:53:43,006 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:43,006 INFO L748 eck$LassoCheckResult]: Stem: 11246#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11225#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 11226#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11249#$Ultimate##0 ~n := #in~n; 11239#L10 assume !(~n < 1); 11233#L12 assume !(1 == ~n); 11195#L15 call #t~ret4 := fibo2(~n - 1);< 11202#$Ultimate##0 ~n := #in~n; 11203#L20 assume !(~n < 1); 11194#L22 assume !(1 == ~n); 11196#L25 call #t~ret6 := fibo1(~n - 1);< 11273#$Ultimate##0 ~n := #in~n; 11285#L10 assume !(~n < 1); 11284#L12 assume !(1 == ~n); 11281#L15 call #t~ret4 := fibo2(~n - 1);< 11282#$Ultimate##0 ~n := #in~n; 11289#L20 assume !(~n < 1); 11288#L22 assume 1 == ~n;#res := 1; 11287#fibo2FINAL assume true; 11280#fibo2EXIT >#50#return; 11277#L15-1 call #t~ret5 := fibo2(~n - 2);< 11278#$Ultimate##0 ~n := #in~n; 11283#L20 assume ~n < 1;#res := 0; 11279#fibo2FINAL assume true; 11276#fibo2EXIT >#52#return; 11275#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11274#fibo1FINAL assume true; 11272#fibo1EXIT >#46#return; 11268#L25-1 call #t~ret7 := fibo1(~n - 2);< 11219#$Ultimate##0 ~n := #in~n; 11270#L10 assume !(~n < 1); 11269#L12 assume !(1 == ~n); 11218#L15 call #t~ret4 := fibo2(~n - 1);< 11267#$Ultimate##0 ~n := #in~n; 11264#L20 assume !(~n < 1); 11257#L22 assume 1 == ~n;#res := 1; 11258#fibo2FINAL assume true; 11328#fibo2EXIT >#50#return; 11245#L15-1 [2022-12-13 17:53:43,006 INFO L750 eck$LassoCheckResult]: Loop: 11245#L15-1 call #t~ret5 := fibo2(~n - 2);< 11325#$Ultimate##0 ~n := #in~n; 11320#L20 assume !(~n < 1); 11319#L22 assume !(1 == ~n); 11296#L25 call #t~ret6 := fibo1(~n - 1);< 11318#$Ultimate##0 ~n := #in~n; 11334#L10 assume !(~n < 1); 11333#L12 assume !(1 == ~n); 11295#L15 call #t~ret4 := fibo2(~n - 1);< 11297#$Ultimate##0 ~n := #in~n; 11324#L20 assume !(~n < 1); 11331#L22 assume 1 == ~n;#res := 1; 11330#fibo2FINAL assume true; 11329#fibo2EXIT >#50#return; 11316#L15-1 call #t~ret5 := fibo2(~n - 2);< 11322#$Ultimate##0 ~n := #in~n; 11323#L20 assume ~n < 1;#res := 0; 11336#fibo2FINAL assume true; 11327#fibo2EXIT >#52#return; 11326#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11321#fibo1FINAL assume true; 11317#fibo1EXIT >#46#return; 11221#L25-1 call #t~ret7 := fibo1(~n - 2);< 11220#$Ultimate##0 ~n := #in~n; 11222#L10 assume !(~n < 1); 11232#L12 assume !(1 == ~n); 11191#L15 call #t~ret4 := fibo2(~n - 1);< 11240#$Ultimate##0 ~n := #in~n; 11314#L20 assume !(~n < 1); 11190#L22 assume 1 == ~n;#res := 1; 11192#fibo2FINAL assume true; 11244#fibo2EXIT >#50#return; 11245#L15-1 [2022-12-13 17:53:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash 772882902, now seen corresponding path program 1 times [2022-12-13 17:53:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:43,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543779705] [2022-12-13 17:53:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:53:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 17:53:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 17:53:43,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:43,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543779705] [2022-12-13 17:53:43,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543779705] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:43,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748795687] [2022-12-13 17:53:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:43,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:43,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:43,073 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:43,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-12-13 17:53:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:53:43,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:53:43,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:53:43,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748795687] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:43,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:43,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2022-12-13 17:53:43,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649718768] [2022-12-13 17:53:43,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:43,234 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:53:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1807088251, now seen corresponding path program 1 times [2022-12-13 17:53:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:43,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743148499] [2022-12-13 17:53:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:53:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:53:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 17:53:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:53:43,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:43,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743148499] [2022-12-13 17:53:43,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743148499] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:43,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786229653] [2022-12-13 17:53:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:43,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:43,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:43,316 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:43,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-12-13 17:53:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:43,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:53:43,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:53:43,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:53:43,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786229653] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:43,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:43,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2022-12-13 17:53:43,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792917349] [2022-12-13 17:53:43,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:43,537 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:53:43,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:43,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 17:53:43,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:53:43,537 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) [2022-12-13 17:53:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:43,626 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-12-13 17:53:43,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 44 transitions. [2022-12-13 17:53:43,626 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 17:53:43,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2022-12-13 17:53:43,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 17:53:43,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 17:53:43,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 17:53:43,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:53:43,627 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:53:43,627 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:53:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 17:53:43,627 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:53:43,627 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-12-13 17:53:43,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 17:53:43,627 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 17:53:43,627 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 17:53:43,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 05:53:43 BoogieIcfgContainer [2022-12-13 17:53:43,632 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 17:53:43,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:53:43,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:53:43,633 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:53:43,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:53:32" (3/4) ... [2022-12-13 17:53:43,635 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 17:53:43,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:53:43,635 INFO L158 Benchmark]: Toolchain (without parser) took 11784.44ms. Allocated memory was 148.9MB in the beginning and 190.8MB in the end (delta: 41.9MB). Free memory was 115.5MB in the beginning and 88.0MB in the end (delta: 27.6MB). Peak memory consumption was 72.7MB. Max. memory is 16.1GB. [2022-12-13 17:53:43,635 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 148.9MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:53:43,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.01ms. Allocated memory is still 148.9MB. Free memory was 115.1MB in the beginning and 105.2MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 17:53:43,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.23ms. Allocated memory is still 148.9MB. Free memory was 105.2MB in the beginning and 103.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:53:43,636 INFO L158 Benchmark]: Boogie Preprocessor took 12.74ms. Allocated memory is still 148.9MB. Free memory was 103.6MB in the beginning and 103.0MB in the end (delta: 660.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:53:43,636 INFO L158 Benchmark]: RCFGBuilder took 213.63ms. Allocated memory is still 148.9MB. Free memory was 103.0MB in the beginning and 93.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 17:53:43,636 INFO L158 Benchmark]: BuchiAutomizer took 11374.35ms. Allocated memory was 148.9MB in the beginning and 190.8MB in the end (delta: 41.9MB). Free memory was 93.1MB in the beginning and 88.0MB in the end (delta: 5.2MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2022-12-13 17:53:43,636 INFO L158 Benchmark]: Witness Printer took 2.42ms. Allocated memory is still 190.8MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:53:43,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 148.9MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.01ms. Allocated memory is still 148.9MB. Free memory was 115.1MB in the beginning and 105.2MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.23ms. Allocated memory is still 148.9MB. Free memory was 105.2MB in the beginning and 103.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.74ms. Allocated memory is still 148.9MB. Free memory was 103.6MB in the beginning and 103.0MB in the end (delta: 660.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 213.63ms. Allocated memory is still 148.9MB. Free memory was 103.0MB in the beginning and 93.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 11374.35ms. Allocated memory was 148.9MB in the beginning and 190.8MB in the end (delta: 41.9MB). Free memory was 93.1MB in the beginning and 88.0MB in the end (delta: 5.2MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * Witness Printer took 2.42ms. Allocated memory is still 190.8MB. Free memory is still 88.0MB. 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 11.3s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 6.7s. Construction of modules took 0.9s. Büchi inclusion checks took 3.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 264 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.0s 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, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 676 mSDsluCounter, 985 SdHoareTripleChecker+Invalid, 0.9s 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, 0.0s 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: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 17:53:43,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-12-13 17:53:43,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-12-13 17:53:44,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-12-13 17:53:44,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:44,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-12-13 17:53:44,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-12-13 17:53:44,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-13 17:53:45,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-12-13 17:53:45,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 17:53:45,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 17:53:45,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d45aed6-c5f6-4fb2-8e28-3cb89adee9e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE