./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:09:35,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:09:35,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:09:35,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:09:35,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:09:35,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:09:35,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:09:35,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:09:35,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:09:35,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:09:35,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:09:35,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:09:35,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:09:35,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:09:35,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:09:35,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:09:35,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:09:35,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:09:35,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:09:35,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:09:35,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:09:35,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:09:35,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:09:35,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:09:35,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:09:35,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:09:35,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:09:35,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:09:35,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:09:35,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:09:35,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:09:35,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:09:35,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:09:35,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:09:35,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:09:35,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:09:35,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:09:35,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:09:35,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:09:35,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:09:35,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:09:35,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-25 18:09:35,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:09:35,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:09:35,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:09:35,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:09:35,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:09:35,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:09:35,568 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:09:35,569 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 18:09:35,569 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 18:09:35,569 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 18:09:35,571 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 18:09:35,571 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 18:09:35,571 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 18:09:35,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:09:35,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:09:35,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:09:35,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:09:35,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:09:35,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:09:35,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 18:09:35,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 18:09:35,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 18:09:35,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:09:35,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:09:35,574 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 18:09:35,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:09:35,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 18:09:35,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:09:35,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:09:35,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:09:35,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:09:35,578 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 18:09:35,579 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_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2022-11-25 18:09:35,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:09:35,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:09:35,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:09:35,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:09:35,952 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:09:35,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-11-25 18:09:39,122 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:09:39,355 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:09:39,356 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-11-25 18:09:39,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/data/da3b77485/48447cc8a915453c83d1a7752f141375/FLAGb8c8854e2 [2022-11-25 18:09:39,382 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/data/da3b77485/48447cc8a915453c83d1a7752f141375 [2022-11-25 18:09:39,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:09:39,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:09:39,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:09:39,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:09:39,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:09:39,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4700a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39, skipping insertion in model container [2022-11-25 18:09:39,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:09:39,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:09:39,686 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-11-25 18:09:39,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:09:39,703 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:09:39,720 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-11-25 18:09:39,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:09:39,737 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:09:39,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39 WrapperNode [2022-11-25 18:09:39,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:09:39,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:09:39,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:09:39,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:09:39,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,778 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-25 18:09:39,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:09:39,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:09:39,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:09:39,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:09:39,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,808 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:09:39,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:09:39,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:09:39,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:09:39,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (1/1) ... [2022-11-25 18:09:39,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:39,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:39,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:39,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 18:09:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:09:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:09:39,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:09:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:09:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-25 18:09:39,926 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-25 18:09:40,017 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:09:40,020 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:09:40,187 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:09:40,195 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:09:40,195 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:09:40,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:40 BoogieIcfgContainer [2022-11-25 18:09:40,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:09:40,200 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 18:09:40,200 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 18:09:40,205 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 18:09:40,206 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 18:09:40,206 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 06:09:39" (1/3) ... [2022-11-25 18:09:40,208 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@313a5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 06:09:40, skipping insertion in model container [2022-11-25 18:09:40,208 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 18:09:40,208 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:39" (2/3) ... [2022-11-25 18:09:40,209 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@313a5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 06:09:40, skipping insertion in model container [2022-11-25 18:09:40,209 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 18:09:40,209 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:40" (3/3) ... [2022-11-25 18:09:40,211 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2022-11-25 18:09:40,283 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 18:09:40,283 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 18:09:40,283 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 18:09:40,284 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 18:09:40,284 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 18:09:40,284 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 18:09:40,284 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 18:09:40,285 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 18:09:40,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:09:40,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 18:09:40,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:09:40,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:09:40,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 18:09:40,330 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 18:09:40,330 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 18:09:40,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:09:40,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 18:09:40,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:09:40,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:09:40,335 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 18:09:40,335 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 18:09:40,374 INFO L748 eck$LassoCheckResult]: Stem: 3#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(12, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-11-25 18:09:40,389 INFO L750 eck$LassoCheckResult]: Loop: 6#fiboENTRYtrue ~n := #in~n; 7#L8true assume !(~n < 1); 9#L10true assume !(1 == ~n); 14#L13true call #t~ret4 := fibo(~n - 1);< 6#fiboENTRYtrue [2022-11-25 18:09:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-11-25 18:09:40,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:40,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818325199] [2022-11-25 18:09:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:40,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:40,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:40,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-11-25 18:09:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:40,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174996531] [2022-11-25 18:09:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:40,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:40,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-11-25 18:09:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:40,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571729680] [2022-11-25 18:09:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:40,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:40,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:40,852 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:40,853 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:40,853 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:40,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:40,853 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:09:40,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:40,854 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:40,854 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:40,854 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-11-25 18:09:40,854 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:40,855 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:40,875 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:40,890 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:40,895 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:40,899 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:40,913 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:40,994 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:40,995 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:09:40,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:40,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:41,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:41,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 18:09:41,045 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:41,045 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:41,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:41,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:41,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 18:09:41,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:41,107 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:41,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:41,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:41,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 18:09:41,160 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:41,160 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:41,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 18:09:41,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:41,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:41,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:09:41,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:41,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 18:09:41,339 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:09:41,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,349 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:41,350 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:41,350 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:41,350 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:41,350 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:09:41,350 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,350 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:41,351 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:41,351 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-11-25 18:09:41,351 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:41,351 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:41,353 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:41,358 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:41,367 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:41,375 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:41,397 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:41,481 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:41,487 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:09:41,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,506 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 [2022-11-25 18:09:41,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:41,522 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:41,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 18:09:41,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:41,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:41,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:41,526 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:41,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:41,537 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:41,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,558 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:09:41,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 18:09:41,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:41,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:41,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:41,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:41,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:41,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:41,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:41,582 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:41,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 18:09:41,602 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 [2022-11-25 18:09:41,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:41,614 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:41,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:41,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:41,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:41,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:41,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:41,626 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:41,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,638 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 18:09:41,642 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 [2022-11-25 18:09:41,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:41,658 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:41,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:41,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:41,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:41,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:41,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:41,679 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:09:41,685 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 18:09:41,686 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 18:09:41,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:41,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:41,694 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:41,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 18:09:41,697 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:09:41,697 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:09:41,697 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:09:41,698 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-25 18:09:41,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:41,710 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:09:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:41,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:09:41,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:41,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:09:41,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:41,988 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-25 18:09:41,991 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:42,126 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-11-25 18:09:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-25 18:09:42,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-25 18:09:42,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:42,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-25 18:09:42,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:42,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-25 18:09:42,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:42,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-25 18:09:42,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 18:09:42,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-11-25 18:09:42,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-25 18:09:42,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-25 18:09:42,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-25 18:09:42,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:42,184 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-25 18:09:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-25 18:09:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-25 18:09:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:09:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-25 18:09:42,233 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-25 18:09:42,233 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-25 18:09:42,233 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 18:09:42,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-25 18:09:42,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 18:09:42,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:09:42,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:09:42,236 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:42,236 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:42,237 INFO L748 eck$LassoCheckResult]: Stem: 121#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(12, 2);call #Ultimate.allocInit(12, 3); 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 128#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 131#fiboENTRY ~n := #in~n; 132#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 127#fiboENTRY ~n := #in~n; 133#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#33#return; 124#L13-1 [2022-11-25 18:09:42,237 INFO L750 eck$LassoCheckResult]: Loop: 124#L13-1 call #t~ret5 := fibo(~n - 2);< 125#fiboENTRY ~n := #in~n; 140#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 123#L13 call #t~ret4 := fibo(~n - 1);< 125#fiboENTRY ~n := #in~n; 140#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 138#fiboEXIT >#33#return; 124#L13-1 [2022-11-25 18:09:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:42,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-11-25 18:09:42,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:42,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189904827] [2022-11-25 18:09:42,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:42,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:09:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:09:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:42,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189904827] [2022-11-25 18:09:42,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189904827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:42,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:42,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:09:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592505172] [2022-11-25 18:09:42,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:42,512 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:09:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:42,516 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-11-25 18:09:42,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:42,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160855811] [2022-11-25 18:09:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:42,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:09:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:09:42,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:42,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160855811] [2022-11-25 18:09:42,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160855811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:42,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:42,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:09:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961677288] [2022-11-25 18:09:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:42,606 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 18:09:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:09:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:09:42,611 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:42,709 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-25 18:09:42,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-25 18:09:42,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 18:09:42,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-25 18:09:42,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-25 18:09:42,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-25 18:09:42,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-25 18:09:42,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:42,715 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-25 18:09:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-25 18:09:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-25 18:09:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 18:09:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-25 18:09:42,718 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-25 18:09:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:09:42,720 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-25 18:09:42,720 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 18:09:42,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-25 18:09:42,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 18:09:42,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:09:42,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:09:42,722 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:42,722 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:42,723 INFO L748 eck$LassoCheckResult]: Stem: 194#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(12, 2);call #Ultimate.allocInit(12, 3); 195#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 200#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 204#fiboENTRY ~n := #in~n; 206#L8 assume !(~n < 1); 210#L10 assume !(1 == ~n); 199#L13 call #t~ret4 := fibo(~n - 1);< 201#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 209#L10 assume 1 == ~n;#res := 1; 211#fiboFINAL assume true; 213#fiboEXIT >#33#return; 197#L13-1 [2022-11-25 18:09:42,723 INFO L750 eck$LassoCheckResult]: Loop: 197#L13-1 call #t~ret5 := fibo(~n - 2);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 215#fiboFINAL assume true; 212#fiboEXIT >#33#return; 197#L13-1 [2022-11-25 18:09:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-11-25 18:09:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:42,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801997870] [2022-11-25 18:09:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:09:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:42,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801997870] [2022-11-25 18:09:42,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801997870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398662702] [2022-11-25 18:09:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:42,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:09:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:42,886 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:09:42,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:09:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:09:42,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:43,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:09:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:43,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398662702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:09:43,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:09:43,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-25 18:09:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903661281] [2022-11-25 18:09:43,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:09:43,178 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:09:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-11-25 18:09:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:43,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872152462] [2022-11-25 18:09:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:43,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:43,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:43,415 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:43,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:43,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:43,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:43,416 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:09:43,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:43,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:43,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:43,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-11-25 18:09:43,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:43,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:43,419 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:43,423 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:43,433 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:43,443 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:43,501 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:43,502 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:09:43,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:43,507 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:43,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:43,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:43,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 18:09:43,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:43,551 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:43,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:43,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:43,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:43,564 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:43,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:43,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:43,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 18:09:43,611 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:43,611 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:43,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:43,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:43,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 18:09:43,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:43,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:43,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:43,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:43,658 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:43,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:09:43,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:43,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-25 18:09:44,469 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:09:44,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:44,474 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:44,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:44,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:44,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:44,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:09:44,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:44,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:44,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:44,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-11-25 18:09:44,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:44,475 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:44,476 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:44,490 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:44,493 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:44,503 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:44,562 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:44,562 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:09:44,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:44,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:44,565 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:44,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-25 18:09:44,571 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 [2022-11-25 18:09:44,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:44,587 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:44,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:44,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:44,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:44,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:44,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:44,606 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:44,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:44,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:44,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:44,617 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:44,628 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 [2022-11-25 18:09:44,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-25 18:09:44,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:44,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:44,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:44,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:44,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:44,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:44,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:44,656 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:44,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2022-11-25 18:09:44,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:44,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:44,662 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:44,671 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 [2022-11-25 18:09:44,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-25 18:09:44,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:44,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:44,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:44,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:44,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:44,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:44,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:44,706 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:09:44,712 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 18:09:44,712 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 18:09:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:44,718 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:44,733 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:09:44,733 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:09:44,733 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:09:44,733 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-25 18:09:44,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-25 18:09:44,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-11-25 18:09:44,741 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:09:44,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:44,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:09:44,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:44,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:09:44,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:45,099 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 18:09:45,100 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:09:45,408 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-11-25 18:09:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:09:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-25 18:09:45,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-25 18:09:45,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:45,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-25 18:09:45,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:45,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-25 18:09:45,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:45,420 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-25 18:09:45,428 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-25 18:09:45,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-25 18:09:45,442 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-25 18:09:45,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-25 18:09:45,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-25 18:09:45,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:45,444 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-25 18:09:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-25 18:09:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-25 18:09:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-11-25 18:09:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-25 18:09:45,475 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-25 18:09:45,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:09:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:09:45,476 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:09:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:45,666 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-25 18:09:45,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-25 18:09:45,684 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-25 18:09:45,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-25 18:09:45,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-25 18:09:45,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-25 18:09:45,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-25 18:09:45,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:45,699 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-25 18:09:45,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-25 18:09:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-25 18:09:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-25 18:09:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-25 18:09:45,721 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-25 18:09:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:09:45,724 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-25 18:09:45,724 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 18:09:45,724 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-25 18:09:45,730 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-25 18:09:45,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:09:45,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:09:45,734 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:45,734 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:45,735 INFO L748 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 802#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 803#fiboENTRY ~n := #in~n; 813#L8 assume !(~n < 1); 818#L10 assume !(1 == ~n); 824#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 850#L8 assume !(~n < 1); 848#L10 assume 1 == ~n;#res := 1; 846#fiboFINAL assume true; 844#fiboEXIT >#33#return; 790#L13-1 call #t~ret5 := fibo(~n - 2);< 842#fiboENTRY ~n := #in~n; 890#L8 assume ~n < 1;#res := 0; 889#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 820#L13-1 [2022-11-25 18:09:45,735 INFO L750 eck$LassoCheckResult]: Loop: 820#L13-1 call #t~ret5 := fibo(~n - 2);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume 1 == ~n;#res := 1; 823#fiboFINAL assume true; 874#fiboEXIT >#33#return; 820#L13-1 [2022-11-25 18:09:45,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:45,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-11-25 18:09:45,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:45,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296839859] [2022-11-25 18:09:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:09:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:09:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:46,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:09:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:09:46,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:46,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296839859] [2022-11-25 18:09:46,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296839859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:46,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801480668] [2022-11-25 18:09:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:46,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:09:46,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:46,222 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:09:46,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 18:09:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:46,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:09:46,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:09:46,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:09:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:09:46,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801480668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:09:46,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:09:46,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-11-25 18:09:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455349611] [2022-11-25 18:09:46,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:09:46,771 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:09:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-11-25 18:09:46,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:46,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989902595] [2022-11-25 18:09:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:46,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:46,776 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:46,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:46,945 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:46,945 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:46,945 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:46,945 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:46,945 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:09:46,945 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:46,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:46,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:46,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-11-25 18:09:46,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:46,946 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:46,947 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:46,952 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:46,961 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:46,964 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:47,014 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:47,014 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:09:47,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:47,016 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:47,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:47,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:47,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-25 18:09:47,049 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:47,049 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:47,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:47,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:47,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:47,061 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:47,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:47,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:47,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-25 18:09:47,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:47,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:47,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:47,123 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:47,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:09:47,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:47,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-25 18:09:47,985 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:09:47,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:47,990 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:47,990 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:47,990 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:47,991 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:47,991 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:09:47,991 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:47,991 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:47,991 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:47,991 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-11-25 18:09:47,991 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:47,991 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:47,992 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:47,996 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:48,006 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:48,009 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:48,064 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:48,064 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:09:48,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:48,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:48,066 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:48,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-25 18:09:48,071 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 [2022-11-25 18:09:48,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:48,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:48,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:48,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:48,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:48,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:48,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:48,088 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:48,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:48,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:48,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:48,093 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:48,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-25 18:09:48,097 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 [2022-11-25 18:09:48,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:48,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:48,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:48,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:48,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:48,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:48,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:48,124 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:09:48,127 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 18:09:48,127 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 18:09:48,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:48,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:48,128 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:48,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-25 18:09:48,132 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:09:48,132 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:09:48,132 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:09:48,132 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-25 18:09:48,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-25 18:09:48,136 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:09:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:48,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:09:48,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:48,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:09:48,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:48,669 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 18:09:48,669 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:09:48,938 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-11-25 18:09:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:09:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-25 18:09:48,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-25 18:09:48,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:48,941 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:09:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:49,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:09:49,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:49,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:09:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:49,446 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 18:09:49,446 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:09:49,653 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-11-25 18:09:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:09:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-25 18:09:49,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-25 18:09:49,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:49,656 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:09:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:49,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:09:49,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:50,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:09:50,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:50,104 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 18:09:50,105 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:09:50,426 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-11-25 18:09:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:09:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-25 18:09:50,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-25 18:09:50,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:50,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-25 18:09:50,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:50,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-25 18:09:50,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:50,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-25 18:09:50,458 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-25 18:09:50,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-25 18:09:50,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-25 18:09:50,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-25 18:09:50,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-25 18:09:50,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:50,483 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-25 18:09:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-25 18:09:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-25 18:09:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-11-25 18:09:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-25 18:09:50,554 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-25 18:09:50,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 18:09:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:09:50,557 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 18:09:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:51,052 INFO L93 Difference]: Finished difference Result 658 states and 956 transitions. [2022-11-25 18:09:51,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 658 states and 956 transitions. [2022-11-25 18:09:51,063 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-25 18:09:51,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 658 states to 633 states and 920 transitions. [2022-11-25 18:09:51,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 276 [2022-11-25 18:09:51,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2022-11-25 18:09:51,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 633 states and 920 transitions. [2022-11-25 18:09:51,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:51,074 INFO L218 hiAutomatonCegarLoop]: Abstraction has 633 states and 920 transitions. [2022-11-25 18:09:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states and 920 transitions. [2022-11-25 18:09:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 600. [2022-11-25 18:09:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 367 states have (on average 1.1662125340599454) internal successors, (428), 386 states have internal predecessors, (428), 144 states have call successors, (158), 73 states have call predecessors, (158), 89 states have return successors, (293), 140 states have call predecessors, (293), 135 states have call successors, (293) [2022-11-25 18:09:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 879 transitions. [2022-11-25 18:09:51,117 INFO L240 hiAutomatonCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-25 18:09:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 18:09:51,118 INFO L428 stractBuchiCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-25 18:09:51,118 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 18:09:51,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 600 states and 879 transitions. [2022-11-25 18:09:51,123 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-25 18:09:51,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:09:51,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:09:51,125 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:51,125 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 18:09:51,125 INFO L748 eck$LassoCheckResult]: Stem: 4112#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(12, 2);call #Ultimate.allocInit(12, 3); 4113#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4129#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4130#fiboENTRY ~n := #in~n; 4194#L8 assume !(~n < 1); 4193#L10 assume !(1 == ~n); 4189#L13 call #t~ret4 := fibo(~n - 1);< 4192#fiboENTRY ~n := #in~n; 4191#L8 assume !(~n < 1); 4190#L10 assume !(1 == ~n); 4185#L13 call #t~ret4 := fibo(~n - 1);< 4188#fiboENTRY ~n := #in~n; 4187#L8 assume !(~n < 1); 4186#L10 assume !(1 == ~n); 4181#L13 call #t~ret4 := fibo(~n - 1);< 4184#fiboENTRY ~n := #in~n; 4183#L8 assume !(~n < 1); 4182#L10 assume !(1 == ~n); 4162#L13 call #t~ret4 := fibo(~n - 1);< 4180#fiboENTRY ~n := #in~n; 4179#L8 assume !(~n < 1); 4178#L10 assume !(1 == ~n); 4175#L13 call #t~ret4 := fibo(~n - 1);< 4177#fiboENTRY ~n := #in~n; 4176#L8 assume !(~n < 1); 4174#L10 assume !(1 == ~n); 4171#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4172#L8 assume !(~n < 1); 4310#L10 assume !(1 == ~n); 4170#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4173#L8 assume !(~n < 1); 4626#L10 assume 1 == ~n;#res := 1; 4625#fiboFINAL assume true; 4389#fiboEXIT >#33#return; 4297#L13-1 call #t~ret5 := fibo(~n - 2);< 4299#fiboENTRY ~n := #in~n; 4602#L8 assume !(~n < 1); 4378#L10 assume !(1 == ~n); 4379#L13 call #t~ret4 := fibo(~n - 1);< 4505#fiboENTRY ~n := #in~n; 4518#L8 assume !(~n < 1); 4507#L10 assume !(1 == ~n); 4508#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-25 18:09:51,125 INFO L750 eck$LassoCheckResult]: Loop: 4525#fiboENTRY ~n := #in~n; 4534#L8 assume !(~n < 1); 4530#L10 assume !(1 == ~n); 4520#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-25 18:09:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1242269160, now seen corresponding path program 1 times [2022-11-25 18:09:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:51,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984750120] [2022-11-25 18:09:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:51,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:51,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:09:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:09:51,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984750120] [2022-11-25 18:09:51,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984750120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870891946] [2022-11-25 18:09:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:51,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:09:51,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:51,405 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:09:51,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-25 18:09:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:51,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 18:09:51,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:09:51,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:09:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:09:51,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870891946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:09:51,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:09:51,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 24 [2022-11-25 18:09:51,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498962905] [2022-11-25 18:09:51,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:09:51,893 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:09:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-11-25 18:09:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:51,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480763652] [2022-11-25 18:09:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:51,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:51,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:51,946 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:51,946 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:51,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:51,947 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:51,947 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:09:51,947 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:51,947 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:51,947 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:51,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-11-25 18:09:51,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:51,947 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:51,949 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:51,952 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:51,955 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:51,957 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:51,966 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:52,014 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:52,014 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:09:52,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,016 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:52,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:52,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-25 18:09:52,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:52,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:52,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,070 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-25 18:09:52,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:52,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:52,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:52,090 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:52,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,096 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:52,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:52,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-25 18:09:52,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:52,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:52,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,124 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-25 18:09:52,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:52,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:52,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,155 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:09:52,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-25 18:09:52,238 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:09:52,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-11-25 18:09:52,242 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:52,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:52,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:52,243 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:52,243 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:09:52,243 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,243 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:52,243 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:52,243 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-11-25 18:09:52,243 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:52,243 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:52,244 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:52,246 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:52,249 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:52,253 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:52,256 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:52,313 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:52,313 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:09:52,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,315 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-25 18:09:52,317 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 [2022-11-25 18:09:52,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:52,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:52,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:52,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:52,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:52,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:52,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:52,354 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:52,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,367 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,376 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 [2022-11-25 18:09:52,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-25 18:09:52,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:52,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:52,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:52,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:52,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:52,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:52,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:52,408 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:52,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,419 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,426 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 [2022-11-25 18:09:52,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-25 18:09:52,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:52,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:52,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:52,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:52,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:52,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:52,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:52,458 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:52,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,464 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,467 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 [2022-11-25 18:09:52,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-25 18:09:52,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:52,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:52,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:52,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:52,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:52,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:52,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:52,481 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:52,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:52,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,486 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-25 18:09:52,489 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 [2022-11-25 18:09:52,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:52,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:52,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:52,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:52,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:52,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:52,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:52,504 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:09:52,507 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 18:09:52,507 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 18:09:52,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:52,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:52,509 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:52,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-25 18:09:52,512 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:09:52,512 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:09:52,512 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:09:52,512 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-25 18:09:52,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-11-25 18:09:52,516 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:09:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:52,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:09:52,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:52,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:09:52,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:52,807 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-25 18:09:52,807 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:52,889 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-25 18:09:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-25 18:09:52,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-25 18:09:52,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:52,918 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:09:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:52,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:53,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:09:53,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:53,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:09:53,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:53,232 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-25 18:09:53,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:53,321 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-25 18:09:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-25 18:09:53,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-25 18:09:53,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:53,324 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:09:53,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:53,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:09:53,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:53,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:09:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:53,635 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-25 18:09:53,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:53,742 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 811 states and 1113 transitions. Complement of second has 14 states. [2022-11-25 18:09:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-25 18:09:53,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-25 18:09:53,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:53,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2022-11-25 18:09:53,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:53,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2022-11-25 18:09:53,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:53,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 811 states and 1113 transitions. [2022-11-25 18:09:53,761 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-25 18:09:53,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 811 states to 662 states and 952 transitions. [2022-11-25 18:09:53,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 235 [2022-11-25 18:09:53,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2022-11-25 18:09:53,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 662 states and 952 transitions. [2022-11-25 18:09:53,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:53,774 INFO L218 hiAutomatonCegarLoop]: Abstraction has 662 states and 952 transitions. [2022-11-25 18:09:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states and 952 transitions. [2022-11-25 18:09:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 632. [2022-11-25 18:09:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 394 states have (on average 1.1548223350253808) internal successors, (455), 418 states have internal predecessors, (455), 144 states have call successors, (158), 73 states have call predecessors, (158), 94 states have return successors, (303), 140 states have call predecessors, (303), 135 states have call successors, (303) [2022-11-25 18:09:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 916 transitions. [2022-11-25 18:09:53,800 INFO L240 hiAutomatonCegarLoop]: Abstraction has 632 states and 916 transitions. [2022-11-25 18:09:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:09:53,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:09:53,801 INFO L87 Difference]: Start difference. First operand 632 states and 916 transitions. Second operand has 24 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 16 states have internal predecessors, (40), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:09:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:54,364 INFO L93 Difference]: Finished difference Result 901 states and 1327 transitions. [2022-11-25 18:09:54,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 901 states and 1327 transitions. [2022-11-25 18:09:54,380 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-25 18:09:54,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 901 states to 858 states and 1265 transitions. [2022-11-25 18:09:54,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2022-11-25 18:09:54,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 306 [2022-11-25 18:09:54,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 858 states and 1265 transitions. [2022-11-25 18:09:54,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:54,397 INFO L218 hiAutomatonCegarLoop]: Abstraction has 858 states and 1265 transitions. [2022-11-25 18:09:54,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states and 1265 transitions. [2022-11-25 18:09:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 789. [2022-11-25 18:09:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 491 states have (on average 1.1344195519348268) internal successors, (557), 520 states have internal predecessors, (557), 190 states have call successors, (206), 98 states have call predecessors, (206), 108 states have return successors, (366), 170 states have call predecessors, (366), 178 states have call successors, (366) [2022-11-25 18:09:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1129 transitions. [2022-11-25 18:09:54,432 INFO L240 hiAutomatonCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-25 18:09:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 18:09:54,433 INFO L428 stractBuchiCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-25 18:09:54,434 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-25 18:09:54,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 789 states and 1129 transitions. [2022-11-25 18:09:54,441 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-25 18:09:54,442 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:09:54,442 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:09:54,449 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 13, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:54,449 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 18:09:54,450 INFO L748 eck$LassoCheckResult]: Stem: 9124#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(12, 2);call #Ultimate.allocInit(12, 3); 9125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 9141#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 9142#fiboENTRY ~n := #in~n; 9347#L8 assume !(~n < 1); 9339#L10 assume !(1 == ~n); 9336#L13 call #t~ret4 := fibo(~n - 1);< 9337#fiboENTRY ~n := #in~n; 9382#L8 assume !(~n < 1); 9380#L10 assume !(1 == ~n); 9324#L13 call #t~ret4 := fibo(~n - 1);< 9376#fiboENTRY ~n := #in~n; 9669#L8 assume !(~n < 1); 9659#L10 assume !(1 == ~n); 9369#L13 call #t~ret4 := fibo(~n - 1);< 9445#fiboENTRY ~n := #in~n; 9463#L8 assume !(~n < 1); 9461#L10 assume !(1 == ~n); 9453#L13 call #t~ret4 := fibo(~n - 1);< 9454#fiboENTRY ~n := #in~n; 9526#L8 assume !(~n < 1); 9524#L10 assume !(1 == ~n); 9449#L13 call #t~ret4 := fibo(~n - 1);< 9522#fiboENTRY ~n := #in~n; 9602#L8 assume !(~n < 1); 9598#L10 assume !(1 == ~n); 9167#L13 call #t~ret4 := fibo(~n - 1);< 9590#fiboENTRY ~n := #in~n; 9629#L8 assume !(~n < 1); 9628#L10 assume !(1 == ~n); 9594#L13 call #t~ret4 := fibo(~n - 1);< 9627#fiboENTRY ~n := #in~n; 9676#L8 assume !(~n < 1); 9675#L10 assume !(1 == ~n); 9636#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9667#L8 assume !(~n < 1); 9666#L10 assume !(1 == ~n); 9637#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9668#L8 assume !(~n < 1); 9721#L10 assume 1 == ~n;#res := 1; 9719#fiboFINAL assume true; 9711#fiboEXIT >#33#return; 9705#L13-1 call #t~ret5 := fibo(~n - 2);< 9708#fiboENTRY ~n := #in~n; 9778#L8 assume !(~n < 1); 9741#L10 assume !(1 == ~n); 9162#L13 call #t~ret4 := fibo(~n - 1);< 9173#fiboENTRY ~n := #in~n; 9174#L8 assume !(~n < 1); 9849#L10 assume !(1 == ~n); 9178#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-25 18:09:54,450 INFO L750 eck$LassoCheckResult]: Loop: 9177#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-25 18:09:54,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash -486527177, now seen corresponding path program 2 times [2022-11-25 18:09:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:54,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062111878] [2022-11-25 18:09:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 18:09:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:09:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062111878] [2022-11-25 18:09:55,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062111878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646654564] [2022-11-25 18:09:55,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:09:55,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:09:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:55,046 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:09:55,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-25 18:09:55,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:09:55,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:09:55,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 18:09:55,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:09:55,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:09:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:09:55,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646654564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:09:55,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:09:55,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 23 [2022-11-25 18:09:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109064536] [2022-11-25 18:09:55,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:09:55,583 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:09:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1893846, now seen corresponding path program 3 times [2022-11-25 18:09:55,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:55,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182828986] [2022-11-25 18:09:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:55,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:55,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:55,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:55,660 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:55,660 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:55,660 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:55,660 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:55,660 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:09:55,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:55,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:55,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:55,661 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-11-25 18:09:55,661 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:55,661 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:55,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:55,664 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:55,675 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:55,678 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:55,739 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:55,740 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:09:55,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:55,746 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:55,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:55,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:55,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-25 18:09:55,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:09:55,780 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:09:55,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:55,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:55,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:55,789 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:55,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:09:55,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:55,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-25 18:09:55,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:55,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:55,854 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:55,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:09:55,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:09:55,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-25 18:09:56,868 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:09:56,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-11-25 18:09:56,873 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:09:56,873 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:09:56,873 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:09:56,873 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:09:56,873 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:09:56,873 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:56,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:09:56,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:09:56,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-11-25 18:09:56,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:09:56,873 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:09:56,874 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:56,877 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:56,879 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:56,882 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:09:56,955 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:09:56,955 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:09:56,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:56,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:56,957 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:56,967 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 [2022-11-25 18:09:56,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-25 18:09:56,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:56,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:56,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:56,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:56,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:56,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:56,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:57,002 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:57,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-11-25 18:09:57,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:57,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:57,008 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:57,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-25 18:09:57,011 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 [2022-11-25 18:09:57,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:57,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:57,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:57,024 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:57,024 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:57,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:57,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:57,035 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:57,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:57,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:57,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:57,047 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:57,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-25 18:09:57,051 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 [2022-11-25 18:09:57,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:57,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:57,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:57,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:57,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:57,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:57,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:57,069 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:09:57,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:57,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:57,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:57,074 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:57,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-25 18:09:57,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:09:57,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:09:57,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:09:57,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:09:57,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:09:57,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:09:57,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:09:57,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:09:57,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:09:57,116 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 18:09:57,117 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 18:09:57,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:09:57,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:57,122 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:09:57,127 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:09:57,127 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:09:57,127 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:09:57,127 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-25 18:09:57,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-25 18:09:57,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:57,133 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:09:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:57,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 18:09:57,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:57,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:09:57,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:57,469 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-25 18:09:57,469 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:57,552 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 816 states and 1157 transitions. Complement of second has 18 states. [2022-11-25 18:09:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2022-11-25 18:09:57,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-25 18:09:57,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:57,555 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:09:57,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:57,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 18:09:57,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:57,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:09:57,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:57,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:57,893 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-25 18:09:57,893 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:58,020 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 1046 states and 1479 transitions. Complement of second has 22 states. [2022-11-25 18:09:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-25 18:09:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-11-25 18:09:58,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-25 18:09:58,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:58,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 60 letters. Loop has 4 letters. [2022-11-25 18:09:58,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:58,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 8 letters. [2022-11-25 18:09:58,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:09:58,024 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1046 states and 1479 transitions. [2022-11-25 18:09:58,040 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-25 18:09:58,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1046 states to 967 states and 1395 transitions. [2022-11-25 18:09:58,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 306 [2022-11-25 18:09:58,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 334 [2022-11-25 18:09:58,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 967 states and 1395 transitions. [2022-11-25 18:09:58,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:09:58,056 INFO L218 hiAutomatonCegarLoop]: Abstraction has 967 states and 1395 transitions. [2022-11-25 18:09:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states and 1395 transitions. [2022-11-25 18:09:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 954. [2022-11-25 18:09:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 601 states have (on average 1.1231281198003327) internal successors, (675), 638 states have internal predecessors, (675), 223 states have call successors, (257), 125 states have call predecessors, (257), 130 states have return successors, (446), 190 states have call predecessors, (446), 211 states have call successors, (446) [2022-11-25 18:09:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1378 transitions. [2022-11-25 18:09:58,090 INFO L240 hiAutomatonCegarLoop]: Abstraction has 954 states and 1378 transitions. [2022-11-25 18:09:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 18:09:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:09:58,092 INFO L87 Difference]: Start difference. First operand 954 states and 1378 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 13 states have internal predecessors, (38), 11 states have call successors, (12), 12 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:09:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:58,624 INFO L93 Difference]: Finished difference Result 554 states and 654 transitions. [2022-11-25 18:09:58,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 554 states and 654 transitions. [2022-11-25 18:09:58,632 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 18:09:58,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 554 states to 0 states and 0 transitions. [2022-11-25 18:09:58,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 18:09:58,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 18:09:58,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 18:09:58,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:58,633 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:09:58,633 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:09:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 18:09:58,634 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:09:58,634 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-25 18:09:58,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-25 18:09:58,635 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 18:09:58,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-25 18:09:58,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 06:09:58 BoogieIcfgContainer [2022-11-25 18:09:58,644 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 18:09:58,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:09:58,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:09:58,645 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:09:58,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:40" (3/4) ... [2022-11-25 18:09:58,649 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:09:58,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:09:58,650 INFO L158 Benchmark]: Toolchain (without parser) took 19232.86ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 158.3MB in the beginning and 177.5MB in the end (delta: -19.1MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. [2022-11-25 18:09:58,651 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 107.9MB in the beginning and 107.7MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:09:58,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.51ms. Allocated memory is still 186.6MB. Free memory was 158.1MB in the beginning and 152.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-11-25 18:09:58,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.19ms. Allocated memory is still 186.6MB. Free memory was 152.2MB in the beginning and 150.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:09:58,652 INFO L158 Benchmark]: Boogie Preprocessor took 32.14ms. Allocated memory is still 186.6MB. Free memory was 150.1MB in the beginning and 149.8MB in the end (delta: 368.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:09:58,652 INFO L158 Benchmark]: RCFGBuilder took 385.05ms. Allocated memory is still 186.6MB. Free memory was 149.8MB in the beginning and 140.5MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:09:58,653 INFO L158 Benchmark]: BuchiAutomizer took 18444.56ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 140.5MB in the beginning and 177.5MB in the end (delta: -36.9MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2022-11-25 18:09:58,653 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 270.5MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:09:58,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 107.9MB in the beginning and 107.7MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.51ms. Allocated memory is still 186.6MB. Free memory was 158.1MB in the beginning and 152.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.19ms. Allocated memory is still 186.6MB. Free memory was 152.2MB in the beginning and 150.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.14ms. Allocated memory is still 186.6MB. Free memory was 150.1MB in the beginning and 149.8MB in the end (delta: 368.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 385.05ms. Allocated memory is still 186.6MB. Free memory was 149.8MB in the beginning and 140.5MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 18444.56ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 140.5MB in the beginning and 177.5MB in the end (delta: -36.9MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 270.5MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.3s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 10.2s. Construction of modules took 1.5s. Büchi inclusion checks took 6.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 254 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 606 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 525 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1471 IncrementalHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 525 mSolverCounterUnsat, 217 mSDtfsCounter, 1471 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp81 dnf100 smp100 tf110 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-25 18:09:58,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:58,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:59,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-25 18:09:59,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-25 18:09:59,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8141da2-1135-4337-ac80-6f6cb68d03c2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE