./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:47:37,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:47:37,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:47:37,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:47:37,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:47:37,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:47:37,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:47:37,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:47:37,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:47:37,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:47:37,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:47:37,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:47:37,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:47:37,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:47:37,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:47:37,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:47:37,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:47:37,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:47:37,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:47:37,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:47:37,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:47:37,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:47:37,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:47:37,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:47:37,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:47:37,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:47:37,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:47:37,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:47:37,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:47:37,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:47:37,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:47:37,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:47:37,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:47:37,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:47:37,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:47:37,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:47:37,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:47:37,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:47:37,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:47:37,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:47:37,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:47:37,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-02 20:47:37,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:47:37,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:47:37,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:47:37,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:47:37,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:47:37,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:47:37,942 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:47:37,942 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:47:37,942 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:47:37,942 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:47:37,943 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:47:37,944 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:47:37,944 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:47:37,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:47:37,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:47:37,945 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:47:37,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:47:37,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:47:37,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:47:37,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:47:37,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:47:37,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:47:37,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:47:37,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:47:37,948 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:47:37,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:47:37,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:47:37,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:47:37,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:47:37,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:47:37,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:47:37,950 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:47:37,951 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_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2022-11-02 20:47:38,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:47:38,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:47:38,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:47:38,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:47:38,257 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:47:38,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-11-02 20:47:38,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/data/5050354e7/e62397a330ee4d959e56da80b8f58abc/FLAGd569eeda3 [2022-11-02 20:47:38,759 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:47:38,760 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-11-02 20:47:38,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/data/5050354e7/e62397a330ee4d959e56da80b8f58abc/FLAGd569eeda3 [2022-11-02 20:47:39,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/data/5050354e7/e62397a330ee4d959e56da80b8f58abc [2022-11-02 20:47:39,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:47:39,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:47:39,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:39,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:47:39,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:47:39,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129baf4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39, skipping insertion in model container [2022-11-02 20:47:39,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:47:39,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:47:39,417 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-11-02 20:47:39,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:39,431 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:47:39,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-11-02 20:47:39,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:39,469 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:47:39,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39 WrapperNode [2022-11-02 20:47:39,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:39,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:39,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:47:39,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:47:39,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,506 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-02 20:47:39,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:39,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:47:39,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:47:39,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:47:39,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,535 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:47:39,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:47:39,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:47:39,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:47:39,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (1/1) ... [2022-11-02 20:47:39,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:39,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:39,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:39,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:47:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:47:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:47:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-02 20:47:39,639 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-02 20:47:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-02 20:47:39,640 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-02 20:47:39,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:47:39,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:47:39,714 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:47:39,717 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:47:39,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:47:39,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:47:39,839 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:47:39,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:39 BoogieIcfgContainer [2022-11-02 20:47:39,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:47:39,843 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:47:39,843 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:47:39,848 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:47:39,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:47:39,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:47:39" (1/3) ... [2022-11-02 20:47:39,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61832695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:47:39, skipping insertion in model container [2022-11-02 20:47:39,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:47:39,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:39" (2/3) ... [2022-11-02 20:47:39,851 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61832695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:47:39, skipping insertion in model container [2022-11-02 20:47:39,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:47:39,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:39" (3/3) ... [2022-11-02 20:47:39,853 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-2.c [2022-11-02 20:47:39,942 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:47:39,942 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:47:39,942 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:47:39,943 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:47:39,943 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:47:39,943 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:47:39,943 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:47:39,943 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:47:39,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:47:39,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:47:39,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:39,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:39,997 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:47:39,997 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:39,997 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:47:39,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:47:40,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:47:40,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:40,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:40,006 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:47:40,007 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:40,015 INFO L748 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-11-02 20:47:40,016 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-11-02 20:47:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-11-02 20:47:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:40,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911022512] [2022-11-02 20:47:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:40,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:40,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:40,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:40,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-11-02 20:47:40,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:40,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216917533] [2022-11-02 20:47:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:40,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:40,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:40,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-11-02 20:47:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:40,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786805002] [2022-11-02 20:47:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:40,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:40,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:40,490 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:40,491 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:40,491 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:40,491 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:40,491 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:47:40,492 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:40,492 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:40,492 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:40,492 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2022-11-02 20:47:40,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:40,492 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:40,509 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,547 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,550 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,553 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,556 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,559 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,561 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,564 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:40,649 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:40,651 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:47:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:40,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:40,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 20:47:40,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:40,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:40,693 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:40,694 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:40,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:40,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:40,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:40,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:40,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:40,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 20:47:40,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:40,774 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:40,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:40,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:40,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:40,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 20:47:40,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:40,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:40,844 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:40,844 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:40,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:40,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:40,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:40,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:40,891 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:40,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 20:47:40,947 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:40,947 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:41,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:41,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:41,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 20:47:41,074 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:41,074 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:41,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 20:47:41,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:41,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:41,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:41,156 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:41,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 20:47:41,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:41,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:41,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:41,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:41,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 20:47:41,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:41,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:41,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:47:41,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:41,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 20:47:41,418 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:47:41,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,426 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:41,426 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:41,426 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:41,426 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:41,427 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:47:41,427 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,427 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:41,427 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:41,427 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2022-11-02 20:47:41,427 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:41,427 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:41,433 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,438 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,444 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,463 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,465 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,468 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,475 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,478 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:41,537 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:41,542 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:47:41,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 20:47:41,553 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:41,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:41,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:41,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:41,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:41,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:41,571 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:41,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:41,576 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:41,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,598 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 20:47:41,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:41,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:41,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:41,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:41,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:41,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:41,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:41,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:41,618 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:41,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,642 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 20:47:41,646 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:41,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:41,658 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:41,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:41,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:41,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:41,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:41,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:41,664 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:41,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,687 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 20:47:41,693 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:41,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:41,703 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:41,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:41,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:41,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:41,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:41,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:41,730 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:41,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 20:47:41,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:41,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:41,771 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:41,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:41,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:41,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:41,772 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:41,772 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:41,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:41,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,820 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:41,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-02 20:47:41,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:41,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:41,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:41,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:41,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:41,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:41,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:41,854 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:47:41,871 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:47:41,872 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:47:41,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:41,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:41,879 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:41,887 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:47:41,887 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:47:41,887 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:47:41,888 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-11-02 20:47:41,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-02 20:47:41,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:41,928 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:47:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:41,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:47:41,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:42,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:47:42,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:42,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:42,161 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-02 20:47:42,167 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:42,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-11-02 20:47:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-11-02 20:47:42,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-02 20:47:42,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:42,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-02 20:47:42,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:42,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-11-02 20:47:42,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:42,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-11-02 20:47:42,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:47:42,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-11-02 20:47:42,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-02 20:47:42,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-11-02 20:47:42,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-11-02 20:47:42,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:42,467 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-02 20:47:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-11-02 20:47:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-11-02 20:47:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-02 20:47:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-02 20:47:42,506 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-02 20:47:42,506 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-02 20:47:42,506 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:47:42,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-11-02 20:47:42,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:47:42,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:42,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:42,511 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:42,511 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:42,512 INFO L748 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-11-02 20:47:42,512 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-11-02 20:47:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-11-02 20:47:42,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:42,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973691667] [2022-11-02 20:47:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:42,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:47:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:47:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:42,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973691667] [2022-11-02 20:47:42,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973691667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:42,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:42,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:47:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848139264] [2022-11-02 20:47:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:42,754 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:47:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-11-02 20:47:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:42,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778102757] [2022-11-02 20:47:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:47:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:47:42,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:42,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778102757] [2022-11-02 20:47:42,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778102757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:42,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:42,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:47:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566460587] [2022-11-02 20:47:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:42,880 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:47:42,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:42,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:47:42,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:47:42,884 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:47:42,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:42,976 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-11-02 20:47:42,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-11-02 20:47:42,986 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:47:42,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-11-02 20:47:42,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-11-02 20:47:42,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-02 20:47:42,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-11-02 20:47:42,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:42,991 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-11-02 20:47:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-11-02 20:47:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-02 20:47:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-02 20:47:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-02 20:47:43,015 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-02 20:47:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:47:43,016 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-02 20:47:43,017 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:47:43,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-11-02 20:47:43,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:47:43,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:43,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:43,019 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:43,019 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:43,019 INFO L748 eck$LassoCheckResult]: Stem: 340#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 341#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-11-02 20:47:43,020 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-11-02 20:47:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:43,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-11-02 20:47:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:43,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696532398] [2022-11-02 20:47:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:43,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:47:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:43,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:43,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696532398] [2022-11-02 20:47:43,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696532398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:43,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831928558] [2022-11-02 20:47:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:43,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:43,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:43,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:43,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:47:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:43,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:47:43,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:43,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:43,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831928558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:43,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:43,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-11-02 20:47:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665440638] [2022-11-02 20:47:43,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:43,396 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:47:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-11-02 20:47:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:43,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624448232] [2022-11-02 20:47:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:43,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:43,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:43,649 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:43,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:43,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:43,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:43,649 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:47:43,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:43,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:43,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:43,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2022-11-02 20:47:43,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:43,650 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:43,651 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,654 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,656 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,659 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,668 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,670 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,673 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:43,723 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:43,723 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:47:43,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:43,726 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:43,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:43,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:43,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-02 20:47:43,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:43,770 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:43,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:43,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:43,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:43,810 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:43,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-02 20:47:43,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:43,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:43,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:43,854 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:43,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:43,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:43,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:43,894 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:43,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:43,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:43,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-02 20:47:43,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:43,925 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:43,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-11-02 20:47:43,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:43,960 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:43,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:43,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:43,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-02 20:47:43,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:43,978 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:44,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:44,007 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:44,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-02 20:47:44,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:44,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:44,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-11-02 20:47:44,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:44,052 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:44,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-02 20:47:44,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:47:44,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:45,203 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:47:45,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-02 20:47:45,206 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:45,206 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:45,207 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:45,207 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:45,207 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:47:45,207 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:45,207 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:45,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:45,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2022-11-02 20:47:45,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:45,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:45,208 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,221 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,224 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,233 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,239 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,244 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:45,313 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:45,314 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:47:45,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:45,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:45,315 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:45,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-02 20:47:45,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:45,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:45,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:45,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:45,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:45,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:45,346 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:45,347 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:45,356 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:45,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-02 20:47:45,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:45,390 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:45,394 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:45,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:45,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:45,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:45,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:45,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:45,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:45,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:45,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-02 20:47:45,426 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:45,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-02 20:47:45,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:45,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:45,454 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:45,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-02 20:47:45,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:45,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:45,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:45,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:45,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:45,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:45,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:45,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:45,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:45,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-11-02 20:47:45,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:45,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:45,507 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:45,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-02 20:47:45,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:45,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:45,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:45,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:45,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:45,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:45,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:45,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:45,532 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:47:45,536 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:47:45,537 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:47:45,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:45,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:45,538 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:45,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:47:45,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:47:45,547 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:47:45,547 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-11-02 20:47:45,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-02 20:47:45,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:45,582 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:47:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:47:45,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:47:45,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:45,873 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-02 20:47:45,873 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:47:46,330 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-11-02 20:47:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:47:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-11-02 20:47:46,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-02 20:47:46,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:46,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-11-02 20:47:46,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:46,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-11-02 20:47:46,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:46,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-11-02 20:47:46,340 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:47:46,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-11-02 20:47:46,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-11-02 20:47:46,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-11-02 20:47:46,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-11-02 20:47:46,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:46,345 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-11-02 20:47:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-11-02 20:47:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-11-02 20:47:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-11-02 20:47:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-02 20:47:46,358 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-02 20:47:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:46,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:47:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:47:46,359 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:47:46,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-11-02 20:47:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:46,570 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2022-11-02 20:47:46,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 247 transitions. [2022-11-02 20:47:46,579 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:47:46,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 243 transitions. [2022-11-02 20:47:46,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2022-11-02 20:47:46,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2022-11-02 20:47:46,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 243 transitions. [2022-11-02 20:47:46,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:46,590 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 243 transitions. [2022-11-02 20:47:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 243 transitions. [2022-11-02 20:47:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2022-11-02 20:47:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (56), 33 states have call predecessors, (56), 36 states have call successors, (56) [2022-11-02 20:47:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2022-11-02 20:47:46,610 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-11-02 20:47:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:47:46,611 INFO L428 stractBuchiCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-11-02 20:47:46,612 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 20:47:46,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 225 transitions. [2022-11-02 20:47:46,618 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:47:46,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:46,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:46,620 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:46,620 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:46,621 INFO L748 eck$LassoCheckResult]: Stem: 1200#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1201#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1230#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1271#fibo1ENTRY ~n := #in~n; 1257#L10 assume !(~n < 1); 1251#L12 assume !(1 == ~n); 1206#L15 call #t~ret4 := fibo2(~n - 1);< 1258#fibo2ENTRY ~n := #in~n; 1265#L20 assume !(~n < 1); 1205#L22 assume !(1 == ~n); 1207#L25 call #t~ret6 := fibo1(~n - 1);< 1238#fibo1ENTRY ~n := #in~n; 1301#L10 assume !(~n < 1); 1306#L12 assume !(1 == ~n); 1203#L15 call #t~ret4 := fibo2(~n - 1);< 1316#fibo2ENTRY ~n := #in~n; 1319#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1315#fibo2EXIT >#50#return; 1312#L15-1 call #t~ret5 := fibo2(~n - 2);< 1313#fibo2ENTRY ~n := #in~n; 1317#L20 assume ~n < 1;#res := 0; 1314#fibo2FINAL assume true; 1311#fibo2EXIT >#52#return; 1308#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1304#fibo1FINAL assume true; 1305#fibo1EXIT >#46#return; 1226#L25-1 call #t~ret7 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1328#L10 assume ~n < 1;#res := 0; 1363#fibo1FINAL assume true; 1225#fibo1EXIT >#48#return; 1229#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1241#fibo2FINAL assume true; 1252#fibo2EXIT >#50#return; 1232#L15-1 call #t~ret5 := fibo2(~n - 2);< 1239#fibo2ENTRY [2022-11-02 20:47:46,621 INFO L750 eck$LassoCheckResult]: Loop: 1239#fibo2ENTRY ~n := #in~n; 1268#L20 assume !(~n < 1); 1309#L22 assume !(1 == ~n); 1231#L25 call #t~ret6 := fibo1(~n - 1);< 1216#fibo1ENTRY ~n := #in~n; 1346#L10 assume !(~n < 1); 1248#L12 assume !(1 == ~n); 1234#L15 call #t~ret4 := fibo2(~n - 1);< 1239#fibo2ENTRY [2022-11-02 20:47:46,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash 613030308, now seen corresponding path program 1 times [2022-11-02 20:47:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:46,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290679836] [2022-11-02 20:47:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:46,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:47:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:47:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:47:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:47:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:46,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290679836] [2022-11-02 20:47:46,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290679836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:46,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373337428] [2022-11-02 20:47:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:46,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:46,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:46,797 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:46,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-02 20:47:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:46,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:47:46,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:47:46,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:47:47,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373337428] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:47,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:47,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2022-11-02 20:47:47,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005100619] [2022-11-02 20:47:47,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:47,370 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:47:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:47,370 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-11-02 20:47:47,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:47,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233089294] [2022-11-02 20:47:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:47,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:47,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:47,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:47,478 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:47,478 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:47,478 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:47,478 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:47,478 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:47:47,478 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,478 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:47,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:47,479 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2022-11-02 20:47:47,479 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:47,479 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:47,480 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,482 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,485 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,487 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,489 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,492 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,494 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,516 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:47,566 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:47:47,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,568 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:47,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-02 20:47:47,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:47,591 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:47,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:47,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,612 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-02 20:47:47,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:47,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:47,625 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:47,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-11-02 20:47:47,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,648 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-02 20:47:47,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:47,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,661 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:47,662 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:47,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-11-02 20:47:47,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,685 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-02 20:47:47,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:47,687 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,698 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:47,698 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:47,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:47,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,723 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-02 20:47:47,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:47,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:47,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:47,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-11-02 20:47:47,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,758 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:47,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-02 20:47:47,772 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:47,772 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:47,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-02 20:47:47,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,796 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-02 20:47:47,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:47,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-02 20:47:47,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:47,829 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:47,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-02 20:47:47,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:47:47,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:47,934 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:47:47,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:47,937 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:47,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:47,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:47,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:47,937 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:47:47,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:47,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:47,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:47,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2022-11-02 20:47:47,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:47,938 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:47,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,947 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,949 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,952 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,963 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,965 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,967 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:47,969 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:48,020 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:48,021 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:47:48,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,025 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-02 20:47:48,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:48,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,058 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:48,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-02 20:47:48,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,085 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-02 20:47:48,087 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 [2022-11-02 20:47:48,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:48,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:48,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,125 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:48,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-02 20:47:48,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,146 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:48,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-11-02 20:47:48,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,174 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-02 20:47:48,176 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:48,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,195 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:48,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:48,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,234 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,238 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:48,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-02 20:47:48,267 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:48,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:48,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,306 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:48,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-02 20:47:48,334 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:48,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:48,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,367 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:48,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,383 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-02 20:47:48,387 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:48,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:48,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,409 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-02 20:47:48,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:48,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:48,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:48,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:48,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:48,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:48,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:48,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:48,426 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:47:48,427 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 20:47:48,428 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 20:47:48,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:48,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:48,429 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:48,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-02 20:47:48,432 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:47:48,432 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:47:48,432 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:47:48,433 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-11-02 20:47:48,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-11-02 20:47:48,454 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:47:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:48,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:47:48,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:48,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:48,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:47:48,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:49,001 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:47:49,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:47:49,193 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-11-02 20:47:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:47:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-11-02 20:47:49,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-02 20:47:49,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:49,199 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:47:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:49,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:47:49,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:49,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:47:49,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:49,643 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:47:49,643 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:47:49,811 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-11-02 20:47:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:47:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-11-02 20:47:49,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-02 20:47:49,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:49,813 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:47:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:49,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:47:49,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:50,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:47:50,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:50,220 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:47:50,220 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:47:50,391 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 553 states and 762 transitions. Complement of second has 25 states. [2022-11-02 20:47:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:47:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-11-02 20:47:50,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-02 20:47:50,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:50,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 20:47:50,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:50,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 16 letters. [2022-11-02 20:47:50,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:50,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 553 states and 762 transitions. [2022-11-02 20:47:50,401 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-11-02 20:47:50,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 553 states to 445 states and 639 transitions. [2022-11-02 20:47:50,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2022-11-02 20:47:50,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2022-11-02 20:47:50,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 639 transitions. [2022-11-02 20:47:50,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:50,408 INFO L218 hiAutomatonCegarLoop]: Abstraction has 445 states and 639 transitions. [2022-11-02 20:47:50,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 639 transitions. [2022-11-02 20:47:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 370. [2022-11-02 20:47:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 246 states have (on average 1.2845528455284554) internal successors, (316), 269 states have internal predecessors, (316), 71 states have call successors, (74), 55 states have call predecessors, (74), 53 states have return successors, (117), 45 states have call predecessors, (117), 69 states have call successors, (117) [2022-11-02 20:47:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions. [2022-11-02 20:47:50,431 INFO L240 hiAutomatonCegarLoop]: Abstraction has 370 states and 507 transitions. [2022-11-02 20:47:50,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:50,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:47:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:47:50,432 INFO L87 Difference]: Start difference. First operand 370 states and 507 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-02 20:47:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:50,776 INFO L93 Difference]: Finished difference Result 449 states and 635 transitions. [2022-11-02 20:47:50,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 635 transitions. [2022-11-02 20:47:50,781 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-02 20:47:50,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 410 states and 591 transitions. [2022-11-02 20:47:50,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2022-11-02 20:47:50,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 229 [2022-11-02 20:47:50,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 591 transitions. [2022-11-02 20:47:50,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:50,790 INFO L218 hiAutomatonCegarLoop]: Abstraction has 410 states and 591 transitions. [2022-11-02 20:47:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 591 transitions. [2022-11-02 20:47:50,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 359. [2022-11-02 20:47:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 233 states have (on average 1.240343347639485) internal successors, (289), 261 states have internal predecessors, (289), 74 states have call successors, (77), 50 states have call predecessors, (77), 52 states have return successors, (130), 47 states have call predecessors, (130), 72 states have call successors, (130) [2022-11-02 20:47:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 496 transitions. [2022-11-02 20:47:50,826 INFO L240 hiAutomatonCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-11-02 20:47:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:47:50,829 INFO L428 stractBuchiCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-11-02 20:47:50,830 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-02 20:47:50,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 496 transitions. [2022-11-02 20:47:50,832 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-02 20:47:50,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:50,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:50,836 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:50,836 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-11-02 20:47:50,837 INFO L748 eck$LassoCheckResult]: Stem: 4905#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4941#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4985#fibo1ENTRY ~n := #in~n; 5033#L10 assume !(~n < 1); 5032#L12 assume !(1 == ~n); 5017#L15 call #t~ret4 := fibo2(~n - 1);< 5030#fibo2ENTRY ~n := #in~n; 5029#L20 assume !(~n < 1); 5026#L22 assume !(1 == ~n); 4947#L25 call #t~ret6 := fibo1(~n - 1);< 5018#fibo1ENTRY ~n := #in~n; 5027#L10 assume !(~n < 1); 5123#L12 assume !(1 == ~n); 5102#L15 call #t~ret4 := fibo2(~n - 1);< 5121#fibo2ENTRY ~n := #in~n; 5126#L20 assume !(~n < 1); 5125#L22 assume 1 == ~n;#res := 1; 5122#fibo2FINAL assume true; 5120#fibo2EXIT >#50#return; 4944#L15-1 call #t~ret5 := fibo2(~n - 2);< 4948#fibo2ENTRY ~n := #in~n; 5148#L20 assume ~n < 1;#res := 0; 5137#fibo2FINAL assume true; 5136#fibo2EXIT >#52#return; 5135#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5134#fibo1FINAL assume true; 5133#fibo1EXIT >#46#return; 5108#L25-1 call #t~ret7 := fibo1(~n - 2);< 5114#fibo1ENTRY ~n := #in~n; 5254#L10 assume ~n < 1;#res := 0; 5252#fibo1FINAL assume true; 5158#fibo1EXIT >#48#return; 5159#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5181#fibo2FINAL assume true; 5180#fibo2EXIT >#50#return; 4915#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY [2022-11-02 20:47:50,837 INFO L750 eck$LassoCheckResult]: Loop: 5103#fibo2ENTRY ~n := #in~n; 4983#L20 assume !(~n < 1); 4913#L22 assume !(1 == ~n); 4919#L25 call #t~ret6 := fibo1(~n - 1);< 5117#fibo1ENTRY ~n := #in~n; 5131#L10 assume !(~n < 1); 5176#L12 assume !(1 == ~n); 4918#L15 call #t~ret4 := fibo2(~n - 1);< 4982#fibo2ENTRY ~n := #in~n; 4983#L20 assume !(~n < 1); 4913#L22 assume !(1 == ~n); 4919#L25 call #t~ret6 := fibo1(~n - 1);< 5117#fibo1ENTRY ~n := #in~n; 5131#L10 assume !(~n < 1); 5176#L12 assume !(1 == ~n); 4918#L15 call #t~ret4 := fibo2(~n - 1);< 4982#fibo2ENTRY ~n := #in~n; 4984#L20 assume !(~n < 1); 5195#L22 assume 1 == ~n;#res := 1; 5194#fibo2FINAL assume true; 5191#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#46#return; 5185#L25-1 call #t~ret7 := fibo1(~n - 2);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume !(~n < 1); 5197#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5151#fibo2ENTRY ~n := #in~n; 5174#L20 assume !(~n < 1); 5172#L22 assume !(1 == ~n); 5170#L25 call #t~ret6 := fibo1(~n - 1);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume !(~n < 1); 5197#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5151#fibo2ENTRY ~n := #in~n; 5174#L20 assume !(~n < 1); 5172#L22 assume 1 == ~n;#res := 1; 5173#fibo2FINAL assume true; 5192#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#46#return; 5185#L25-1 call #t~ret7 := fibo1(~n - 2);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume ~n < 1;#res := 0; 5157#fibo1FINAL assume true; 5188#fibo1EXIT >#48#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5140#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#48#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5140#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY [2022-11-02 20:47:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:50,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1718474001, now seen corresponding path program 1 times [2022-11-02 20:47:50,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:50,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961906230] [2022-11-02 20:47:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:50,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:47:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:50,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:47:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:47:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961906230] [2022-11-02 20:47:51,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961906230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205186115] [2022-11-02 20:47:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:51,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:51,061 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:51,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-02 20:47:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:47:51,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:47:51,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:47:51,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205186115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:51,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:51,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2022-11-02 20:47:51,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362054302] [2022-11-02 20:47:51,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:51,359 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:47:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash 688787707, now seen corresponding path program 1 times [2022-11-02 20:47:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:51,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112554866] [2022-11-02 20:47:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:47:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:47:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:47:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:47:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-02 20:47:51,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:51,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112554866] [2022-11-02 20:47:51,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112554866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:51,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626869810] [2022-11-02 20:47:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:51,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:51,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:51,726 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:51,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-02 20:47:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:47:51,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-02 20:47:51,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-02 20:47:52,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626869810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:52,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:52,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-02 20:47:52,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627817544] [2022-11-02 20:47:52,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:52,372 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:47:52,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:47:52,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:47:52,374 INFO L87 Difference]: Start difference. First operand 359 states and 496 transitions. cyclomatic complexity: 144 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-02 20:47:52,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:52,578 INFO L93 Difference]: Finished difference Result 387 states and 546 transitions. [2022-11-02 20:47:52,578 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 546 transitions. [2022-11-02 20:47:52,582 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-02 20:47:52,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 387 states and 546 transitions. [2022-11-02 20:47:52,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 209 [2022-11-02 20:47:52,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 209 [2022-11-02 20:47:52,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 387 states and 546 transitions. [2022-11-02 20:47:52,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:52,588 INFO L218 hiAutomatonCegarLoop]: Abstraction has 387 states and 546 transitions. [2022-11-02 20:47:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states and 546 transitions. [2022-11-02 20:47:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2022-11-02 20:47:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 238 states have (on average 1.2352941176470589) internal successors, (294), 269 states have internal predecessors, (294), 75 states have call successors, (78), 50 states have call predecessors, (78), 56 states have return successors, (136), 49 states have call predecessors, (136), 73 states have call successors, (136) [2022-11-02 20:47:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2022-11-02 20:47:52,617 INFO L240 hiAutomatonCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-11-02 20:47:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:47:52,618 INFO L428 stractBuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-11-02 20:47:52,618 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-02 20:47:52,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2022-11-02 20:47:52,621 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-02 20:47:52,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:52,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:52,623 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:52,623 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-11-02 20:47:52,623 INFO L748 eck$LassoCheckResult]: Stem: 6614#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6615#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6654#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6697#fibo1ENTRY ~n := #in~n; 6748#L10 assume !(~n < 1); 6747#L12 assume !(1 == ~n); 6739#L15 call #t~ret4 := fibo2(~n - 1);< 6745#fibo2ENTRY ~n := #in~n; 6744#L20 assume !(~n < 1); 6741#L22 assume !(1 == ~n); 6661#L25 call #t~ret6 := fibo1(~n - 1);< 6740#fibo1ENTRY ~n := #in~n; 6729#L10 assume !(~n < 1); 6730#L12 assume !(1 == ~n); 6716#L15 call #t~ret4 := fibo2(~n - 1);< 6717#fibo2ENTRY ~n := #in~n; 6731#L20 assume !(~n < 1); 6732#L22 assume !(1 == ~n); 6663#L25 call #t~ret6 := fibo1(~n - 1);< 6740#fibo1ENTRY ~n := #in~n; 6742#L10 assume !(~n < 1); 6836#L12 assume 1 == ~n;#res := 1; 6834#fibo1FINAL assume true; 6832#fibo1EXIT >#46#return; 6812#L25-1 call #t~ret7 := fibo1(~n - 2);< 6819#fibo1ENTRY ~n := #in~n; 6932#L10 assume ~n < 1;#res := 0; 6933#fibo1FINAL assume true; 6936#fibo1EXIT >#48#return; 6886#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6914#fibo2FINAL assume true; 6851#fibo2EXIT >#50#return; 6626#L15-1 [2022-11-02 20:47:52,623 INFO L750 eck$LassoCheckResult]: Loop: 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6692#L20 assume !(~n < 1); 6622#L22 assume !(1 == ~n); 6628#L25 call #t~ret6 := fibo1(~n - 1);< 6875#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6901#L12 assume !(1 == ~n); 6627#L15 call #t~ret4 := fibo2(~n - 1);< 6695#fibo2ENTRY ~n := #in~n; 6692#L20 assume !(~n < 1); 6622#L22 assume !(1 == ~n); 6628#L25 call #t~ret6 := fibo1(~n - 1);< 6875#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6901#L12 assume !(1 == ~n); 6627#L15 call #t~ret4 := fibo2(~n - 1);< 6695#fibo2ENTRY ~n := #in~n; 6696#L20 assume !(~n < 1); 6906#L22 assume 1 == ~n;#res := 1; 6907#fibo2FINAL assume true; 6892#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6859#L25-1 call #t~ret7 := fibo1(~n - 2);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume !(1 == ~n); 6854#L15 call #t~ret4 := fibo2(~n - 1);< 6862#fibo2ENTRY ~n := #in~n; 6919#L20 assume !(~n < 1); 6916#L22 assume !(1 == ~n); 6857#L25 call #t~ret6 := fibo1(~n - 1);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume !(1 == ~n); 6854#L15 call #t~ret4 := fibo2(~n - 1);< 6862#fibo2ENTRY ~n := #in~n; 6919#L20 assume !(~n < 1); 6916#L22 assume 1 == ~n;#res := 1; 6915#fibo2FINAL assume true; 6890#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6859#L25-1 call #t~ret7 := fibo1(~n - 2);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume 1 == ~n;#res := 1; 6897#fibo1FINAL assume true; 6864#fibo1EXIT >#48#return; 6863#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6861#fibo2FINAL assume true; 6853#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#48#return; 6863#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6861#fibo2FINAL assume true; 6853#fibo2EXIT >#50#return; 6626#L15-1 [2022-11-02 20:47:52,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-11-02 20:47:52,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:52,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344595758] [2022-11-02 20:47:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:52,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:47:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:47:52,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:52,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344595758] [2022-11-02 20:47:52,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344595758] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005245264] [2022-11-02 20:47:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:52,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:52,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:52,786 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:52,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-02 20:47:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:52,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:47:52,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:47:52,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:47:53,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005245264] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:53,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:53,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2022-11-02 20:47:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955224831] [2022-11-02 20:47:53,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:53,145 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:47:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:53,145 INFO L85 PathProgramCache]: Analyzing trace with hash 651349219, now seen corresponding path program 1 times [2022-11-02 20:47:53,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:53,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633297379] [2022-11-02 20:47:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:53,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:47:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:47:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:47:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:47:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-02 20:47:53,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:53,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633297379] [2022-11-02 20:47:53,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633297379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:53,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071504059] [2022-11-02 20:47:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:53,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:53,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:53,424 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:53,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-02 20:47:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:53,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:47:53,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 20:47:53,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 20:47:54,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071504059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:54,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:54,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-02 20:47:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058935430] [2022-11-02 20:47:54,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:54,096 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:47:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:54,097 INFO L87 Difference]: Start difference. First operand 369 states and 508 transitions. cyclomatic complexity: 146 Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-02 20:47:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:54,378 INFO L93 Difference]: Finished difference Result 400 states and 493 transitions. [2022-11-02 20:47:54,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 493 transitions. [2022-11-02 20:47:54,383 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-11-02 20:47:54,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 235 states and 273 transitions. [2022-11-02 20:47:54,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2022-11-02 20:47:54,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2022-11-02 20:47:54,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 273 transitions. [2022-11-02 20:47:54,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:54,388 INFO L218 hiAutomatonCegarLoop]: Abstraction has 235 states and 273 transitions. [2022-11-02 20:47:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states and 273 transitions. [2022-11-02 20:47:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 218. [2022-11-02 20:47:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 143 states have (on average 1.167832167832168) internal successors, (167), 159 states have internal predecessors, (167), 47 states have call successors, (48), 34 states have call predecessors, (48), 28 states have return successors, (39), 24 states have call predecessors, (39), 30 states have call successors, (39) [2022-11-02 20:47:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2022-11-02 20:47:54,395 INFO L240 hiAutomatonCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-11-02 20:47:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:47:54,406 INFO L428 stractBuchiCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-11-02 20:47:54,406 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-02 20:47:54,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 254 transitions. [2022-11-02 20:47:54,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-02 20:47:54,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:54,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:54,409 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:54,410 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:54,410 INFO L748 eck$LassoCheckResult]: Stem: 8302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8303#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8337#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8375#fibo1ENTRY ~n := #in~n; 8404#L10 assume !(~n < 1); 8399#L12 assume !(1 == ~n); 8349#L15 call #t~ret4 := fibo2(~n - 1);< 8394#fibo2ENTRY ~n := #in~n; 8390#L20 assume !(~n < 1); 8388#L22 assume !(1 == ~n); 8346#L25 call #t~ret6 := fibo1(~n - 1);< 8385#fibo1ENTRY ~n := #in~n; 8413#L10 assume !(~n < 1); 8409#L12 assume !(1 == ~n); 8402#L15 call #t~ret4 := fibo2(~n - 1);< 8403#fibo2ENTRY ~n := #in~n; 8414#L20 assume !(~n < 1); 8411#L22 assume 1 == ~n;#res := 1; 8406#fibo2FINAL assume true; 8401#fibo2EXIT >#50#return; 8397#L15-1 call #t~ret5 := fibo2(~n - 2);< 8398#fibo2ENTRY ~n := #in~n; 8405#L20 assume ~n < 1;#res := 0; 8400#fibo2FINAL assume true; 8396#fibo2EXIT >#52#return; 8395#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8392#fibo1FINAL assume true; 8383#fibo1EXIT >#46#return; 8377#L25-1 call #t~ret7 := fibo1(~n - 2);< 8379#fibo1ENTRY ~n := #in~n; 8449#L10 assume !(~n < 1); 8445#L12 assume 1 == ~n;#res := 1; 8420#fibo1FINAL assume true; 8376#fibo1EXIT >#48#return; 8348#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8350#fibo2FINAL assume true; 8354#fibo2EXIT >#50#return; 8321#L15-1 [2022-11-02 20:47:54,410 INFO L750 eck$LassoCheckResult]: Loop: 8321#L15-1 call #t~ret5 := fibo2(~n - 2);< 8431#fibo2ENTRY ~n := #in~n; 8427#L20 assume !(~n < 1); 8425#L22 assume !(1 == ~n); 8421#L25 call #t~ret6 := fibo1(~n - 1);< 8422#fibo1ENTRY ~n := #in~n; 8439#L10 assume !(~n < 1); 8440#L12 assume 1 == ~n;#res := 1; 8443#fibo1FINAL assume true; 8442#fibo1EXIT >#46#return; 8433#L25-1 call #t~ret7 := fibo1(~n - 2);< 8441#fibo1ENTRY ~n := #in~n; 8444#L10 assume !(~n < 1); 8436#L12 assume !(1 == ~n); 8323#L15 call #t~ret4 := fibo2(~n - 1);< 8429#fibo2ENTRY ~n := #in~n; 8430#L20 assume !(~n < 1); 8483#L22 assume 1 == ~n;#res := 1; 8471#fibo2FINAL assume true; 8459#fibo2EXIT >#50#return; 8321#L15-1 [2022-11-02 20:47:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash -979062994, now seen corresponding path program 1 times [2022-11-02 20:47:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:54,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549691121] [2022-11-02 20:47:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:54,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:54,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1176615322, now seen corresponding path program 1 times [2022-11-02 20:47:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:54,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826412175] [2022-11-02 20:47:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:47:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:47:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:54,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826412175] [2022-11-02 20:47:54,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826412175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:54,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541625725] [2022-11-02 20:47:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:54,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:54,475 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:54,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-02 20:47:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:47:54,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:54,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:47:54,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541625725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:54,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:54,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-11-02 20:47:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956659772] [2022-11-02 20:47:54,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:54,630 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:47:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:47:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:47:54,632 INFO L87 Difference]: Start difference. First operand 218 states and 254 transitions. cyclomatic complexity: 42 Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:47:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:54,703 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2022-11-02 20:47:54,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 213 transitions. [2022-11-02 20:47:54,706 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-11-02 20:47:54,707 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 160 states and 179 transitions. [2022-11-02 20:47:54,708 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2022-11-02 20:47:54,708 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2022-11-02 20:47:54,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 179 transitions. [2022-11-02 20:47:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:54,710 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 179 transitions. [2022-11-02 20:47:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 179 transitions. [2022-11-02 20:47:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-11-02 20:47:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 114 states have internal predecessors, (118), 33 states have call successors, (34), 26 states have call predecessors, (34), 19 states have return successors, (25), 17 states have call predecessors, (25), 24 states have call successors, (25) [2022-11-02 20:47:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2022-11-02 20:47:54,717 INFO L240 hiAutomatonCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-11-02 20:47:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:47:54,718 INFO L428 stractBuchiCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-11-02 20:47:54,718 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-02 20:47:54,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 158 states and 177 transitions. [2022-11-02 20:47:54,719 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-11-02 20:47:54,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:54,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:54,722 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:54,722 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:54,722 INFO L748 eck$LassoCheckResult]: Stem: 8853#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8854#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8886#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8924#fibo1ENTRY ~n := #in~n; 8959#L10 assume !(~n < 1); 8958#L12 assume !(1 == ~n); 8888#L15 call #t~ret4 := fibo2(~n - 1);< 8955#fibo2ENTRY ~n := #in~n; 8951#L20 assume !(~n < 1); 8949#L22 assume !(1 == ~n); 8899#L25 call #t~ret6 := fibo1(~n - 1);< 8947#fibo1ENTRY ~n := #in~n; 8885#L10 assume !(~n < 1); 8908#L12 assume !(1 == ~n); 8963#L15 call #t~ret4 := fibo2(~n - 1);< 8964#fibo2ENTRY ~n := #in~n; 8977#L20 assume !(~n < 1); 8971#L22 assume 1 == ~n;#res := 1; 8968#fibo2FINAL assume true; 8962#fibo2EXIT >#50#return; 8953#L15-1 call #t~ret5 := fibo2(~n - 2);< 8954#fibo2ENTRY ~n := #in~n; 8957#L20 assume ~n < 1;#res := 0; 8956#fibo2FINAL assume true; 8952#fibo2EXIT >#52#return; 8950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8948#fibo1FINAL assume true; 8946#fibo1EXIT >#46#return; 8873#L25-1 call #t~ret7 := fibo1(~n - 2);< 8881#fibo1ENTRY ~n := #in~n; 8882#L10 assume !(~n < 1); 8901#L12 assume 1 == ~n;#res := 1; 8872#fibo1FINAL assume true; 8874#fibo1EXIT >#48#return; 8887#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8889#fibo2FINAL assume true; 8916#fibo2EXIT >#50#return; 8894#L15-1 call #t~ret5 := fibo2(~n - 2);< 8897#fibo2ENTRY [2022-11-02 20:47:54,724 INFO L750 eck$LassoCheckResult]: Loop: 8897#fibo2ENTRY ~n := #in~n; 8917#L20 assume !(~n < 1); 9002#L22 assume !(1 == ~n); 8893#L25 call #t~ret6 := fibo1(~n - 1);< 8896#fibo1ENTRY ~n := #in~n; 8984#L10 assume !(~n < 1); 8902#L12 assume !(1 == ~n); 8856#L15 call #t~ret4 := fibo2(~n - 1);< 8912#fibo2ENTRY ~n := #in~n; 8913#L20 assume !(~n < 1); 8855#L22 assume 1 == ~n;#res := 1; 8857#fibo2FINAL assume true; 8988#fibo2EXIT >#50#return; 8895#L15-1 call #t~ret5 := fibo2(~n - 2);< 8897#fibo2ENTRY [2022-11-02 20:47:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash -286181691, now seen corresponding path program 2 times [2022-11-02 20:47:54,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:54,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269637098] [2022-11-02 20:47:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:54,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:54,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash -767060718, now seen corresponding path program 1 times [2022-11-02 20:47:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:54,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4664142] [2022-11-02 20:47:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:54,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:47:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:47:54,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:47:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1541383382, now seen corresponding path program 3 times [2022-11-02 20:47:54,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:54,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251069737] [2022-11-02 20:47:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:47:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:47:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:47:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 20:47:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251069737] [2022-11-02 20:47:54,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251069737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188608073] [2022-11-02 20:47:54,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:47:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:54,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:54,889 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:54,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-02 20:47:54,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:47:54,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:47:54,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:47:54,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:47:54,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:47:55,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188608073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:55,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:55,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 13 [2022-11-02 20:47:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958146489] [2022-11-02 20:47:55,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:55,294 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:55,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:55,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:55,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:55,294 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:47:55,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:55,294 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:55,294 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2022-11-02 20:47:55,294 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:55,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:55,295 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,299 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,304 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,309 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,311 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,316 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:55,351 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:47:55,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,358 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:55,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-02 20:47:55,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:55,384 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:55,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:55,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,418 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:55,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-02 20:47:55,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:55,444 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:55,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:55,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,478 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:55,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-02 20:47:55,502 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:55,502 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:55,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:55,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,526 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-11-02 20:47:55,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:55,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:55,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:55,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:55,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,561 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:55,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-02 20:47:55,574 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:55,574 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:55,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2022-11-02 20:47:55,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,600 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-02 20:47:55,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:55,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,613 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:47:55,613 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:47:55,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2022-11-02 20:47:55,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,637 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-02 20:47:55,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:47:55,639 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-11-02 20:47:55,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,682 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-02 20:47:55,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:47:55,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:47:55,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:47:55,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:55,753 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:47:55,753 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:47:55,753 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:47:55,753 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:47:55,753 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:47:55,753 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,753 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:47:55,753 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:47:55,754 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2022-11-02 20:47:55,754 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:47:55,754 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:47:55,754 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,757 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,759 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,761 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,763 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,765 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,770 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,772 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:47:55,816 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:47:55,816 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:47:55,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,817 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-11-02 20:47:55,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:55,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:55,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:55,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:55,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:55,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:55,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:55,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:55,834 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:55,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2022-11-02 20:47:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,858 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:55,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-11-02 20:47:55,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:55,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:55,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:55,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:55,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:55,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:55,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:55,873 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:55,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:55,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,896 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-11-02 20:47:55,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:55,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:55,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:55,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:55,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:55,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:55,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:55,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:55,909 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:55,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2022-11-02 20:47:55,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:55,932 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:55,938 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:55,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-11-02 20:47:55,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:55,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:55,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:55,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:55,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:55,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:55,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:55,966 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:55,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2022-11-02 20:47:55,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:56,000 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:56,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-11-02 20:47:56,016 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:56,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:56,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:56,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:56,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:56,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:56,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:56,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:56,046 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:47:56,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:56,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:56,083 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:56,086 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:47:56,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-11-02 20:47:56,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:47:56,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:47:56,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:47:56,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:47:56,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:47:56,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:47:56,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:47:56,100 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:47:56,102 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 20:47:56,102 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 20:47:56,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:47:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:56,103 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:56,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-11-02 20:47:56,105 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:47:56,105 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:47:56,105 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:47:56,105 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-11-02 20:47:56,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:56,127 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:47:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:56,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:47:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:56,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:47:56,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:56,669 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-02 20:47:56,670 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 20:47:56,965 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-11-02 20:47:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 20:47:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-11-02 20:47:56,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-02 20:47:56,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:56,968 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:47:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:57,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2022-11-02 20:47:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:47:57,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:57,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:47:57,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:57,480 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-02 20:47:57,480 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 20:47:57,752 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-11-02 20:47:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 20:47:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-11-02 20:47:57,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-02 20:47:57,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:57,756 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:47:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:57,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:47:57,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:58,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:47:58,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:58,233 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-02 20:47:58,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 20:47:58,540 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 338 states and 380 transitions. Complement of second has 29 states. [2022-11-02 20:47:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-02 20:47:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 20:47:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 43 transitions. [2022-11-02 20:47:58,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-02 20:47:58,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:58,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 52 letters. Loop has 14 letters. [2022-11-02 20:47:58,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:58,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 28 letters. [2022-11-02 20:47:58,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:47:58,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 380 transitions. [2022-11-02 20:47:58,551 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-11-02 20:47:58,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 220 states and 255 transitions. [2022-11-02 20:47:58,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2022-11-02 20:47:58,561 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 100 [2022-11-02 20:47:58,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 255 transitions. [2022-11-02 20:47:58,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:58,561 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 255 transitions. [2022-11-02 20:47:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 255 transitions. [2022-11-02 20:47:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 168. [2022-11-02 20:47:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.125) internal successors, (126), 120 states have internal predecessors, (126), 35 states have call successors, (36), 28 states have call predecessors, (36), 21 states have return successors, (27), 19 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-02 20:47:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2022-11-02 20:47:58,574 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 189 transitions. [2022-11-02 20:47:58,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:47:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:47:58,575 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 20:47:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:58,790 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2022-11-02 20:47:58,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 198 transitions. [2022-11-02 20:47:58,792 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-11-02 20:47:58,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 159 states and 178 transitions. [2022-11-02 20:47:58,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-11-02 20:47:58,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-11-02 20:47:58,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 178 transitions. [2022-11-02 20:47:58,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:47:58,794 INFO L218 hiAutomatonCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-11-02 20:47:58,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 178 transitions. [2022-11-02 20:47:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2022-11-02 20:47:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 113 states have internal predecessors, (120), 32 states have call successors, (32), 27 states have call predecessors, (32), 19 states have return successors, (23), 16 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-02 20:47:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2022-11-02 20:47:58,805 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-11-02 20:47:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:47:58,808 INFO L428 stractBuchiCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-11-02 20:47:58,808 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-02 20:47:58,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 157 states and 175 transitions. [2022-11-02 20:47:58,820 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-11-02 20:47:58,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:47:58,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:47:58,821 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:58,821 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:58,821 INFO L748 eck$LassoCheckResult]: Stem: 11190#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11191#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 11223#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11245#fibo1ENTRY ~n := #in~n; 11236#L10 assume !(~n < 1); 11231#L12 assume !(1 == ~n); 11198#L15 call #t~ret4 := fibo2(~n - 1);< 11238#fibo2ENTRY ~n := #in~n; 11346#L20 assume !(~n < 1); 11197#L22 assume !(1 == ~n); 11199#L25 call #t~ret6 := fibo1(~n - 1);< 11280#fibo1ENTRY ~n := #in~n; 11279#L10 assume !(~n < 1); 11278#L12 assume !(1 == ~n); 11275#L15 call #t~ret4 := fibo2(~n - 1);< 11276#fibo2ENTRY ~n := #in~n; 11284#L20 assume !(~n < 1); 11283#L22 assume 1 == ~n;#res := 1; 11282#fibo2FINAL assume true; 11274#fibo2EXIT >#50#return; 11271#L15-1 call #t~ret5 := fibo2(~n - 2);< 11272#fibo2ENTRY ~n := #in~n; 11277#L20 assume ~n < 1;#res := 0; 11273#fibo2FINAL assume true; 11270#fibo2EXIT >#52#return; 11269#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11268#fibo1FINAL assume true; 11266#fibo1EXIT >#46#return; 11204#L25-1 call #t~ret7 := fibo1(~n - 2);< 11216#fibo1ENTRY ~n := #in~n; 11259#L10 assume !(~n < 1); 11258#L12 assume !(1 == ~n); 11215#L15 call #t~ret4 := fibo2(~n - 1);< 11257#fibo2ENTRY ~n := #in~n; 11255#L20 assume !(~n < 1); 11253#L22 assume 1 == ~n;#res := 1; 11232#fibo2FINAL assume true; 11233#fibo2EXIT >#50#return; 11213#L15-1 [2022-11-02 20:47:58,822 INFO L750 eck$LassoCheckResult]: Loop: 11213#L15-1 call #t~ret5 := fibo2(~n - 2);< 11287#fibo2ENTRY ~n := #in~n; 11309#L20 assume !(~n < 1); 11336#L22 assume !(1 == ~n); 11201#L25 call #t~ret6 := fibo1(~n - 1);< 11224#fibo1ENTRY ~n := #in~n; 11339#L10 assume !(~n < 1); 11297#L12 assume !(1 == ~n); 11211#L15 call #t~ret4 := fibo2(~n - 1);< 11293#fibo2ENTRY ~n := #in~n; 11316#L20 assume !(~n < 1); 11315#L22 assume 1 == ~n;#res := 1; 11234#fibo2FINAL assume true; 11235#fibo2EXIT >#50#return; 11210#L15-1 call #t~ret5 := fibo2(~n - 2);< 11288#fibo2ENTRY ~n := #in~n; 11333#L20 assume ~n < 1;#res := 0; 11332#fibo2FINAL assume true; 11286#fibo2EXIT >#52#return; 11243#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11200#fibo1FINAL assume true; 11206#fibo1EXIT >#46#return; 11203#L25-1 call #t~ret7 := fibo1(~n - 2);< 11214#fibo1ENTRY ~n := #in~n; 11311#L10 assume !(~n < 1); 11310#L12 assume !(1 == ~n); 11212#L15 call #t~ret4 := fibo2(~n - 1);< 11322#fibo2ENTRY ~n := #in~n; 11326#L20 assume !(~n < 1); 11324#L22 assume 1 == ~n;#res := 1; 11321#fibo2FINAL assume true; 11291#fibo2EXIT >#50#return; 11213#L15-1 [2022-11-02 20:47:58,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 772882902, now seen corresponding path program 1 times [2022-11-02 20:47:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:58,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435053060] [2022-11-02 20:47:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:58,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:47:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:47:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:47:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:58,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435053060] [2022-11-02 20:47:58,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435053060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:58,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31884021] [2022-11-02 20:47:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:58,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:58,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:58,926 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:58,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-02 20:47:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:58,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:47:58,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:47:59,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:47:59,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31884021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:59,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:59,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2022-11-02 20:47:59,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750411225] [2022-11-02 20:47:59,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:59,160 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:47:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1807088251, now seen corresponding path program 1 times [2022-11-02 20:47:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:59,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190413344] [2022-11-02 20:47:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:59,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:47:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:47:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:47:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:47:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:47:59,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:59,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190413344] [2022-11-02 20:47:59,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190413344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:59,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802858896] [2022-11-02 20:47:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:59,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:59,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:59,278 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:59,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-02 20:47:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:47:59,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:47:59,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:47:59,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802858896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:59,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:59,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2022-11-02 20:47:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574184816] [2022-11-02 20:47:59,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:59,646 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:47:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:59,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:59,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:59,647 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. cyclomatic complexity: 23 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 20:47:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:59,819 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-11-02 20:47:59,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 44 transitions. [2022-11-02 20:47:59,820 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:47:59,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2022-11-02 20:47:59,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 20:47:59,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 20:47:59,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 20:47:59,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:59,821 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:47:59,821 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:47:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:47:59,821 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:47:59,821 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-02 20:47:59,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:47:59,822 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:47:59,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-02 20:47:59,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:47:59 BoogieIcfgContainer [2022-11-02 20:47:59,829 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:47:59,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:47:59,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:47:59,829 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:47:59,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:39" (3/4) ... [2022-11-02 20:47:59,833 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:47:59,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:47:59,833 INFO L158 Benchmark]: Toolchain (without parser) took 20658.44ms. Allocated memory was 98.6MB in the beginning and 161.5MB in the end (delta: 62.9MB). Free memory was 62.3MB in the beginning and 46.8MB in the end (delta: 15.5MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. [2022-11-02 20:47:59,834 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 98.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:47:59,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.40ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 75.8MB in the end (delta: -13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:47:59,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.49ms. Allocated memory is still 98.6MB. Free memory was 75.8MB in the beginning and 74.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:47:59,835 INFO L158 Benchmark]: Boogie Preprocessor took 36.41ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 73.6MB in the end (delta: 793.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:47:59,835 INFO L158 Benchmark]: RCFGBuilder took 297.81ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 64.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:47:59,835 INFO L158 Benchmark]: BuchiAutomizer took 19985.81ms. Allocated memory was 98.6MB in the beginning and 161.5MB in the end (delta: 62.9MB). Free memory was 63.9MB in the beginning and 46.8MB in the end (delta: 17.1MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2022-11-02 20:47:59,836 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 161.5MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:47:59,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 98.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.40ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 75.8MB in the end (delta: -13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.49ms. Allocated memory is still 98.6MB. Free memory was 75.8MB in the beginning and 74.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.41ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 73.6MB in the end (delta: 793.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 297.81ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 64.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 19985.81ms. Allocated memory was 98.6MB in the beginning and 161.5MB in the end (delta: 62.9MB). Free memory was 63.9MB in the beginning and 46.8MB in the end (delta: 17.1MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 161.5MB. Free memory is still 46.8MB. 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 19.9s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 12.1s. Construction of modules took 1.5s. Büchi inclusion checks took 5.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 264 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 676 mSDsluCounter, 985 SdHoareTripleChecker+Invalid, 1.6s 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: 30ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-02 20:47:59,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-11-02 20:48:00,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-11-02 20:48:00,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-11-02 20:48:00,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-11-02 20:48:00,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-11-02 20:48:00,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-11-02 20:48:01,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-02 20:48:01,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-02 20:48:01,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-02 20:48:01,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-02 20:48:01,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22b7e1-ab13-4e5d-91c9-0cc292a217ed/bin/uautomizer-Dbtcem3rbc/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