./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff 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_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:09:27,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:09:27,664 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:09:27,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:09:27,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:09:27,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:09:27,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:09:27,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:09:27,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:09:27,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:09:27,698 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:09:27,699 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:09:27,699 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:09:27,700 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:09:27,701 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:09:27,701 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:09:27,714 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:09:27,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:09:27,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:09:27,716 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:09:27,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:09:27,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:09:27,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:09:27,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:09:27,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:09:27,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:09:27,721 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:09:27,721 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:09:27,722 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:09:27,722 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:09:27,722 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:09:27,723 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:09:27,723 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:09:27,723 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:09:27,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:09:27,724 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:09:27,725 INFO L153 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_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2023-11-19 07:09:27,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:09:28,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:09:28,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:09:28,018 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:09:28,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:09:28,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2023-11-19 07:09:31,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:09:31,425 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:09:31,426 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2023-11-19 07:09:31,434 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/data/95435d915/523d987215b24ed99d6d7ee21ab0d204/FLAG6c83a8827 [2023-11-19 07:09:31,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/data/95435d915/523d987215b24ed99d6d7ee21ab0d204 [2023-11-19 07:09:31,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:09:31,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:09:31,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:09:31,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:09:31,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:09:31,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1505eba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31, skipping insertion in model container [2023-11-19 07:09:31,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,486 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:09:31,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:09:31,656 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:09:31,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:09:31,689 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:09:31,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31 WrapperNode [2023-11-19 07:09:31,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:09:31,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:09:31,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:09:31,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:09:31,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,724 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-19 07:09:31,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:09:31,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:09:31,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:09:31,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:09:31,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:09:31,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:09:31,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:09:31,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:09:31,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (1/1) ... [2023-11-19 07:09:31,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:31,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:31,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:31,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:09:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:09:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:09:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-19 07:09:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-19 07:09:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-19 07:09:31,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-19 07:09:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:09:31,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:09:31,916 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:09:31,921 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:09:32,088 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:09:32,096 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:09:32,097 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:09:32,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:32 BoogieIcfgContainer [2023-11-19 07:09:32,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:09:32,102 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:09:32,102 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:09:32,107 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:09:32,108 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:09:32,108 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:09:31" (1/3) ... [2023-11-19 07:09:32,109 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67902d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:09:32, skipping insertion in model container [2023-11-19 07:09:32,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:09:32,110 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31" (2/3) ... [2023-11-19 07:09:32,110 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67902d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:09:32, skipping insertion in model container [2023-11-19 07:09:32,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:09:32,111 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:32" (3/3) ... [2023-11-19 07:09:32,112 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2023-11-19 07:09:32,174 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:09:32,174 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:09:32,175 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:09:32,175 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:09:32,175 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:09:32,175 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:09:32,175 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:09:32,175 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:09:32,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:09:32,206 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:09:32,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:32,206 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:32,216 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:09:32,216 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:32,217 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:09:32,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:09:32,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:09:32,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:32,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:32,222 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:09:32,223 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:32,232 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-19 07:09:32,233 INFO L750 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2023-11-19 07:09:32,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-19 07:09:32,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:32,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343596414] [2023-11-19 07:09:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:32,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:32,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:32,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:32,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-19 07:09:32,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:32,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979545293] [2023-11-19 07:09:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:32,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:32,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:32,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:32,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-19 07:09:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063095448] [2023-11-19 07:09:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:32,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:32,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:32,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:32,755 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:32,756 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:32,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:32,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:32,756 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:09:32,757 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:32,757 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:32,757 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:32,757 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2023-11-19 07:09:32,757 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:32,758 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:32,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,831 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,836 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,844 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,849 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,868 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,874 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:32,986 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:32,987 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:09:32,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:32,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:09:33,041 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:33,041 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:33,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-19 07:09:33,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:09:33,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:33,097 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:33,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-19 07:09:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:09:33,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,133 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:33,133 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:33,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:09:33,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,197 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:33,197 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:33,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:09:33,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:33,253 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:33,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:09:33,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,299 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:33,299 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:33,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:09:33,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,330 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:33,330 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:33,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:09:33,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:33,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:09:33,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:33,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:09:33,506 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:09:33,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,511 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:33,511 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:33,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:33,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:33,512 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:09:33,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:33,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:33,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2023-11-19 07:09:33,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:33,513 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:33,514 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,520 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,526 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,529 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,554 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:33,627 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:33,632 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:09:33,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,655 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 [2023-11-19 07:09:33,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:33,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:33,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:33,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:33,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:33,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:09:33,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:33,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:33,684 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:33,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,725 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:09:33,733 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 [2023-11-19 07:09:33,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:33,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:33,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:33,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:33,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:33,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:33,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:33,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:33,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,777 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 [2023-11-19 07:09:33,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:33,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:33,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:33,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:33,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:33,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:33,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:33,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:09:33,800 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:33,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,836 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:09:33,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:33,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:33,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:33,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:33,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:33,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:33,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:33,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:09:33,876 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:33,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,910 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:09:33,920 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 [2023-11-19 07:09:33,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:33,930 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:33,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:33,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:33,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:33,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:33,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:33,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:33,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:33,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:33,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:33,978 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 [2023-11-19 07:09:33,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:33,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:33,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:33,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:33,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:33,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:33,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:33,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:09:33,999 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:09:34,003 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:09:34,003 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:09:34,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:34,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:34,042 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:34,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:09:34,044 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:09:34,044 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:09:34,044 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:09:34,045 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-19 07:09:34,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:34,061 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:09:34,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:34,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:09:34,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:34,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:09:34,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:34,382 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-19 07:09:34,384 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:09:34,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 85 states and 117 transitions. Complement of second has 24 states. [2023-11-19 07:09:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-19 07:09:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:09:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-19 07:09:34,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-19 07:09:34,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:34,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-19 07:09:34,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:34,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-19 07:09:34,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:34,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-19 07:09:34,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:09:34,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-19 07:09:34,681 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-19 07:09:34,681 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-19 07:09:34,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-19 07:09:34,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:34,684 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-19 07:09:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-19 07:09:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-19 07:09:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-19 07:09:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-19 07:09:34,718 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-19 07:09:34,718 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-19 07:09:34,718 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:09:34,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-19 07:09:34,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:09:34,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:34,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:34,722 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:34,722 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:34,722 INFO L748 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-19 07:09:34,722 INFO L750 eck$LassoCheckResult]: Loop: 211#L25-1 call #t~ret7 := fibo1(~n - 2);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume !(~n < 1); 243#L12 assume !(1 == ~n); 212#L15 call #t~ret4 := fibo2(~n - 1);< 225#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 224#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#48#return; 211#L25-1 [2023-11-19 07:09:34,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-19 07:09:34,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:34,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226318657] [2023-11-19 07:09:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:34,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:09:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:09:34,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226318657] [2023-11-19 07:09:34,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226318657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:09:34,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:09:34,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:09:34,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047906822] [2023-11-19 07:09:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:09:34,880 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:09:34,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:34,880 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-19 07:09:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74153576] [2023-11-19 07:09:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:09:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:09:35,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:35,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74153576] [2023-11-19 07:09:35,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74153576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:09:35,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:09:35,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:09:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620785926] [2023-11-19 07:09:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:09:35,003 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:09:35,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:09:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:09:35,007 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:09:35,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:35,107 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-19 07:09:35,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-19 07:09:35,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:09:35,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-19 07:09:35,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-19 07:09:35,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-19 07:09:35,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-19 07:09:35,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:35,114 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-19 07:09:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-19 07:09:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-19 07:09:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-19 07:09:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-19 07:09:35,123 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-19 07:09:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:09:35,124 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-19 07:09:35,124 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:09:35,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-19 07:09:35,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:09:35,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:35,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:35,127 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:35,127 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:35,128 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-19 07:09:35,128 INFO L750 eck$LassoCheckResult]: Loop: 355#L25-1 call #t~ret7 := fibo1(~n - 2);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume !(1 == ~n); 361#L15 call #t~ret4 := fibo2(~n - 1);< 392#$Ultimate##0 ~n := #in~n; 391#L20 assume !(~n < 1); 389#L22 assume !(1 == ~n); 356#L25 call #t~ret6 := fibo1(~n - 1);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 384#fibo1FINAL assume true; 385#fibo1EXIT >#48#return; 355#L25-1 [2023-11-19 07:09:35,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:35,128 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-19 07:09:35,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:35,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674363172] [2023-11-19 07:09:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:35,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:09:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674363172] [2023-11-19 07:09:35,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674363172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305997311] [2023-11-19 07:09:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:35,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:35,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:35,324 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:35,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:09:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:35,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:09:35,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:35,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:35,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305997311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:35,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:35,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-19 07:09:35,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160020612] [2023-11-19 07:09:35,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:35,636 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:09:35,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-19 07:09:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:35,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280934256] [2023-11-19 07:09:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:35,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:35,669 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:35,917 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:35,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:35,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:35,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:35,917 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:09:35,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:35,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:35,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:35,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2023-11-19 07:09:35,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:35,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:35,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,923 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,930 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,934 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,939 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:35,944 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,001 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:36,001 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:09:36,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,002 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:36,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:36,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:09:36,029 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:36,029 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:36,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,054 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:36,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:36,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:09:36,093 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:36,093 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:36,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,114 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:36,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:36,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:09:36,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:36,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:36,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,169 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:36,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:36,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:09:36,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:36,213 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:36,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,238 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:36,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:36,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:09:36,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:36,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:36,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,294 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:36,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:36,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:09:36,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,360 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:09:36,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:36,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:09:36,400 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:09:36,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,424 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:36,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:36,424 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:36,424 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:36,424 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:09:36,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:36,424 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:36,424 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2023-11-19 07:09:36,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:36,425 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:36,426 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,429 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,431 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,442 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,451 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:36,505 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:36,505 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:09:36,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,506 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,513 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 [2023-11-19 07:09:36,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:36,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:36,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:36,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:36,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:36,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:36,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:36,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:09:36,532 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:36,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-19 07:09:36,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,545 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:09:36,546 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 [2023-11-19 07:09:36,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:36,556 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:36,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:36,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:36,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:36,560 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:36,560 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:36,569 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:36,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,595 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,601 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 [2023-11-19 07:09:36,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:36,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:36,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:36,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:36,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:36,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:36,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:36,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:09:36,624 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:36,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,648 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,651 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 [2023-11-19 07:09:36,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:36,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:36,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:36,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:36,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:36,664 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:36,664 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:36,673 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:36,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:09:36,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,693 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,695 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 [2023-11-19 07:09:36,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:09:36,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:36,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:36,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:36,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:36,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:36,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:36,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:36,724 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:09:36,738 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:09:36,738 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:09:36,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:36,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:36,740 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:36,742 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:09:36,742 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:09:36,742 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:09:36,743 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-19 07:09:36,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:09:36,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:36,761 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:09:36,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:36,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:09:36,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:36,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:09:36,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:37,031 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-19 07:09:37,031 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:09:37,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:37,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2023-11-19 07:09:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-19 07:09:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:09:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-19 07:09:37,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-19 07:09:37,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:37,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-19 07:09:37,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:37,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-19 07:09:37,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:37,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-19 07:09:37,582 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:09:37,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-19 07:09:37,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-19 07:09:37,593 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-19 07:09:37,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-19 07:09:37,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:37,595 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-19 07:09:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-19 07:09:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-19 07:09:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2023-11-19 07:09:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-19 07:09:37,636 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-19 07:09:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:09:37,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:09:37,637 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:09:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:37,895 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2023-11-19 07:09:37,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2023-11-19 07:09:37,903 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:09:37,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2023-11-19 07:09:37,915 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2023-11-19 07:09:37,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2023-11-19 07:09:37,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2023-11-19 07:09:37,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:37,919 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2023-11-19 07:09:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2023-11-19 07:09:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2023-11-19 07:09:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2023-11-19 07:09:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2023-11-19 07:09:37,950 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-19 07:09:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:09:37,951 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-19 07:09:37,951 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:09:37,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2023-11-19 07:09:37,954 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:09:37,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:37,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:37,961 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:09:37,961 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:37,961 INFO L748 eck$LassoCheckResult]: Stem: 1278#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1253#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1281#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1270#L12 assume !(1 == ~n); 1221#L15 call #t~ret4 := fibo2(~n - 1);< 1229#$Ultimate##0 ~n := #in~n; 1230#L20 assume !(~n < 1); 1220#L22 assume !(1 == ~n); 1222#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1311#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1304#L15 call #t~ret4 := fibo2(~n - 1);< 1305#$Ultimate##0 ~n := #in~n; 1309#L20 assume !(~n < 1); 1310#L22 assume !(1 == ~n); 1257#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1311#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1304#L15 call #t~ret4 := fibo2(~n - 1);< 1305#$Ultimate##0 ~n := #in~n; 1309#L20 assume ~n < 1;#res := 0; 1307#fibo2FINAL assume true; 1303#fibo2EXIT >#52#return; 1256#L15-1 call #t~ret5 := fibo2(~n - 2);< 1258#$Ultimate##0 ~n := #in~n; 1378#L20 assume !(~n < 1); 1377#L22 assume !(1 == ~n); 1257#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1313#L10 assume !(~n < 1); 1318#L12 assume 1 == ~n;#res := 1; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1301#L25-1 call #t~ret7 := fibo1(~n - 2);< 1243#$Ultimate##0 ~n := #in~n; 1306#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1241#L15 call #t~ret4 := fibo2(~n - 1);< 1299#$Ultimate##0 ~n := #in~n; 1298#L20 assume ~n < 1;#res := 0; 1272#fibo2FINAL assume true; 1273#fibo2EXIT >#52#return; 1242#L15-1 call #t~ret5 := fibo2(~n - 2);< 1299#$Ultimate##0 ~n := #in~n; 1298#L20 assume !(~n < 1); 1292#L22 assume 1 == ~n;#res := 1; 1293#fibo2FINAL assume true; 1364#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#50#return; 1248#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1368#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#48#return; 1247#L25-1 call #t~ret7 := fibo1(~n - 2);< 1239#$Ultimate##0 ~n := #in~n; 1249#L10 assume !(~n < 1); 1267#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1366#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#50#return; 1248#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1366#L15-1 [2023-11-19 07:09:37,961 INFO L750 eck$LassoCheckResult]: Loop: 1366#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume !(~n < 1); 1374#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1239#$Ultimate##0 ~n := #in~n; 1249#L10 assume !(~n < 1); 1267#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1366#L15-1 [2023-11-19 07:09:37,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1380034771, now seen corresponding path program 1 times [2023-11-19 07:09:37,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:37,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860293124] [2023-11-19 07:09:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:37,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:09:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:09:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:09:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-19 07:09:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:09:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-19 07:09:38,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:38,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860293124] [2023-11-19 07:09:38,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860293124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:38,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640159044] [2023-11-19 07:09:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:38,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:38,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:38,420 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:38,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-19 07:09:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:38,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:09:38,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-19 07:09:38,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:09:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640159044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:39,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:39,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2023-11-19 07:09:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799802159] [2023-11-19 07:09:39,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:39,334 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:09:39,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash -441960109, now seen corresponding path program 1 times [2023-11-19 07:09:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558274661] [2023-11-19 07:09:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:09:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:09:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558274661] [2023-11-19 07:09:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558274661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:09:39,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:09:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:09:39,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125191102] [2023-11-19 07:09:39,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:09:39,376 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:09:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:09:39,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:09:39,377 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:09:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:39,423 INFO L93 Difference]: Finished difference Result 189 states and 242 transitions. [2023-11-19 07:09:39,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 242 transitions. [2023-11-19 07:09:39,426 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:09:39,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 177 states and 228 transitions. [2023-11-19 07:09:39,430 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2023-11-19 07:09:39,431 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2023-11-19 07:09:39,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 228 transitions. [2023-11-19 07:09:39,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:39,431 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 228 transitions. [2023-11-19 07:09:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 228 transitions. [2023-11-19 07:09:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2023-11-19 07:09:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 113 states have internal predecessors, (124), 35 states have call successors, (36), 20 states have call predecessors, (36), 26 states have return successors, (52), 29 states have call predecessors, (52), 32 states have call successors, (52) [2023-11-19 07:09:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 212 transitions. [2023-11-19 07:09:39,444 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 212 transitions. [2023-11-19 07:09:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:09:39,445 INFO L428 stractBuchiCegarLoop]: Abstraction has 163 states and 212 transitions. [2023-11-19 07:09:39,445 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:09:39,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 212 transitions. [2023-11-19 07:09:39,447 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:09:39,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:39,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:39,450 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 07:09:39,450 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 07:09:39,451 INFO L748 eck$LassoCheckResult]: Stem: 2359#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2325#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2326#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2361#$Ultimate##0 ~n := #in~n; 2355#L10 assume !(~n < 1); 2350#L12 assume !(1 == ~n); 2307#L15 call #t~ret4 := fibo2(~n - 1);< 2311#$Ultimate##0 ~n := #in~n; 2312#L20 assume !(~n < 1); 2306#L22 assume !(1 == ~n); 2308#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2333#L10 assume !(~n < 1); 2391#L12 assume !(1 == ~n); 2334#L15 call #t~ret4 := fibo2(~n - 1);< 2387#$Ultimate##0 ~n := #in~n; 2393#L20 assume !(~n < 1); 2392#L22 assume !(1 == ~n); 2331#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2333#L10 assume !(~n < 1); 2391#L12 assume !(1 == ~n); 2334#L15 call #t~ret4 := fibo2(~n - 1);< 2387#$Ultimate##0 ~n := #in~n; 2393#L20 assume !(~n < 1); 2392#L22 assume 1 == ~n;#res := 1; 2389#fibo2FINAL assume true; 2360#fibo2EXIT >#52#return; 2335#L15-1 call #t~ret5 := fibo2(~n - 2);< 2338#$Ultimate##0 ~n := #in~n; 2357#L20 assume !(~n < 1); 2358#L22 assume !(1 == ~n); 2331#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2332#L10 assume !(~n < 1); 2396#L12 assume 1 == ~n;#res := 1; 2395#fibo1FINAL assume true; 2394#fibo1EXIT >#48#return; 2348#L25-1 call #t~ret7 := fibo1(~n - 2);< 2322#$Ultimate##0 ~n := #in~n; 2388#L10 assume !(~n < 1); 2380#L12 assume !(1 == ~n); 2321#L15 call #t~ret4 := fibo2(~n - 1);< 2377#$Ultimate##0 ~n := #in~n; 2375#L20 assume !(~n < 1); 2371#L22 assume 1 == ~n;#res := 1; 2372#fibo2FINAL assume true; 2430#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#48#return; 2423#L25-1 call #t~ret7 := fibo1(~n - 2);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#52#return; 2416#L15-1 [2023-11-19 07:09:39,451 INFO L750 eck$LassoCheckResult]: Loop: 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume !(1 == ~n); 2425#L25 call #t~ret6 := fibo1(~n - 1);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume !(1 == ~n); 2425#L25 call #t~ret6 := fibo1(~n - 1);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#48#return; 2423#L25-1 call #t~ret7 := fibo1(~n - 2);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#52#return; 2416#L15-1 [2023-11-19 07:09:39,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:39,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1159629665, now seen corresponding path program 2 times [2023-11-19 07:09:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:39,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689935918] [2023-11-19 07:09:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:39,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:09:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 07:09:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 75 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-19 07:09:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689935918] [2023-11-19 07:09:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689935918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135565387] [2023-11-19 07:09:39,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:09:39,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:39,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:39,972 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:39,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-19 07:09:40,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:09:40,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:09:40,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:09:40,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 92 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-19 07:09:40,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 93 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-19 07:09:40,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135565387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:40,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:40,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 21 [2023-11-19 07:09:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954192536] [2023-11-19 07:09:40,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:40,631 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:09:40,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1108085027, now seen corresponding path program 1 times [2023-11-19 07:09:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:40,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133946406] [2023-11-19 07:09:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:40,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:09:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:09:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-19 07:09:40,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:40,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133946406] [2023-11-19 07:09:40,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133946406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:40,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80826936] [2023-11-19 07:09:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:40,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:40,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:40,848 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:40,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-19 07:09:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:40,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:09:40,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:09:41,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:09:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80826936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:41,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:41,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-19 07:09:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073279222] [2023-11-19 07:09:41,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:41,473 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:09:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:09:41,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:09:41,474 INFO L87 Difference]: Start difference. First operand 163 states and 212 transitions. cyclomatic complexity: 54 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-19 07:09:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:41,758 INFO L93 Difference]: Finished difference Result 121 states and 150 transitions. [2023-11-19 07:09:41,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 150 transitions. [2023-11-19 07:09:41,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-19 07:09:41,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 97 states and 120 transitions. [2023-11-19 07:09:41,763 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2023-11-19 07:09:41,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2023-11-19 07:09:41,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 120 transitions. [2023-11-19 07:09:41,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:41,763 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 120 transitions. [2023-11-19 07:09:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 120 transitions. [2023-11-19 07:09:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-11-19 07:09:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 63 states have internal predecessors, (69), 18 states have call successors, (18), 13 states have call predecessors, (18), 14 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2023-11-19 07:09:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2023-11-19 07:09:41,769 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 116 transitions. [2023-11-19 07:09:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:09:41,771 INFO L428 stractBuchiCegarLoop]: Abstraction has 93 states and 116 transitions. [2023-11-19 07:09:41,771 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:09:41,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 116 transitions. [2023-11-19 07:09:41,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-19 07:09:41,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:41,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:41,774 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:41,774 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:41,774 INFO L748 eck$LassoCheckResult]: Stem: 3778#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3751#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3752#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3781#$Ultimate##0 ~n := #in~n; 3783#L10 assume !(~n < 1); 3772#L12 assume !(1 == ~n); 3760#L15 call #t~ret4 := fibo2(~n - 1);< 3799#$Ultimate##0 ~n := #in~n; 3798#L20 assume !(~n < 1); 3797#L22 assume !(1 == ~n); 3745#L25 call #t~ret6 := fibo1(~n - 1);< 3754#$Ultimate##0 ~n := #in~n; 3756#L10 assume !(~n < 1); 3775#L12 assume !(1 == ~n); 3737#L15 call #t~ret4 := fibo2(~n - 1);< 3742#$Ultimate##0 ~n := #in~n; 3743#L20 assume !(~n < 1); 3736#L22 assume !(1 == ~n); 3738#L25 call #t~ret6 := fibo1(~n - 1);< 3754#$Ultimate##0 ~n := #in~n; 3755#L10 assume !(~n < 1); 3784#L12 assume 1 == ~n;#res := 1; 3744#fibo1FINAL assume true; 3746#fibo1EXIT >#48#return; 3747#L25-1 call #t~ret7 := fibo1(~n - 2);< 3748#$Ultimate##0 ~n := #in~n; 3753#L10 assume ~n < 1;#res := 0; 3771#fibo1FINAL assume true; 3749#fibo1EXIT >#50#return; 3750#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3823#fibo2FINAL assume true; 3814#fibo2EXIT >#52#return; 3768#L15-1 [2023-11-19 07:09:41,774 INFO L750 eck$LassoCheckResult]: Loop: 3768#L15-1 call #t~ret5 := fibo2(~n - 2);< 3811#$Ultimate##0 ~n := #in~n; 3825#L20 assume !(~n < 1); 3785#L22 assume !(1 == ~n); 3765#L25 call #t~ret6 := fibo1(~n - 1);< 3759#$Ultimate##0 ~n := #in~n; 3786#L10 assume !(~n < 1); 3788#L12 assume !(1 == ~n); 3740#L15 call #t~ret4 := fibo2(~n - 1);< 3739#$Ultimate##0 ~n := #in~n; 3741#L20 assume !(~n < 1); 3785#L22 assume !(1 == ~n); 3765#L25 call #t~ret6 := fibo1(~n - 1);< 3759#$Ultimate##0 ~n := #in~n; 3786#L10 assume !(~n < 1); 3788#L12 assume 1 == ~n;#res := 1; 3791#fibo1FINAL assume true; 3792#fibo1EXIT >#48#return; 3793#L25-1 call #t~ret7 := fibo1(~n - 2);< 3812#$Ultimate##0 ~n := #in~n; 3819#L10 assume ~n < 1;#res := 0; 3787#fibo1FINAL assume true; 3824#fibo1EXIT >#50#return; 3794#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3822#fibo2FINAL assume true; 3813#fibo2EXIT >#52#return; 3768#L15-1 [2023-11-19 07:09:41,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2023-11-19 07:09:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:41,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069155060] [2023-11-19 07:09:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:41,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:41,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:41,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2023-11-19 07:09:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:41,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302668903] [2023-11-19 07:09:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:41,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:41,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:41,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:41,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1060289932, now seen corresponding path program 1 times [2023-11-19 07:09:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532871856] [2023-11-19 07:09:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:41,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:09:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:09:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 07:09:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532871856] [2023-11-19 07:09:41,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532871856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253978139] [2023-11-19 07:09:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:41,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:41,972 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:41,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-19 07:09:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:42,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:09:42,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 07:09:42,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 07:09:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253978139] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:42,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:42,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2023-11-19 07:09:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584418641] [2023-11-19 07:09:42,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:42,560 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:42,560 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:42,560 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:42,560 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:42,560 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:09:42,560 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,560 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:42,560 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:42,561 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2023-11-19 07:09:42,561 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:42,561 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:42,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,564 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,581 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,583 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,585 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,592 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,597 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,599 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,646 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:42,646 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:09:42,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,648 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:42,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 07:09:42,668 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:42,668 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:42,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:42,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,693 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:42,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 07:09:42,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:42,721 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:42,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:42,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,745 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:42,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-19 07:09:42,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:42,762 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:42,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:42,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,788 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:42,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-19 07:09:42,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:42,803 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:42,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:42,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,820 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-19 07:09:42,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:42,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,838 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:42,838 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:42,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2023-11-19 07:09:42,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,869 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-19 07:09:42,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:42,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,882 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:42,882 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:42,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-19 07:09:42,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,896 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-19 07:09:42,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:42,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-11-19 07:09:42,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:42,928 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:42,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:09:42,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:42,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-19 07:09:42,961 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:09:42,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:42,984 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:42,984 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:42,984 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:42,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:42,984 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:09:42,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:42,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:42,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:42,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2023-11-19 07:09:42,985 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:42,985 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:42,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:42,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:43,002 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:43,005 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:43,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:43,076 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:43,076 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:09:43,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,078 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,083 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 [2023-11-19 07:09:43,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-19 07:09:43,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,112 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:43,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:43,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,136 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,141 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 [2023-11-19 07:09:43,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-19 07:09:43,164 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:43,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:43,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,189 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,193 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 [2023-11-19 07:09:43,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-19 07:09:43,216 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:43,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:43,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,241 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,245 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 [2023-11-19 07:09:43,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-19 07:09:43,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,258 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:43,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-19 07:09:43,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,274 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,276 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 [2023-11-19 07:09:43,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,289 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-19 07:09:43,304 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:43,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-19 07:09:43,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,319 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-19 07:09:43,320 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 [2023-11-19 07:09:43,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,332 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,332 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,334 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:43,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2023-11-19 07:09:43,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,347 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2023-11-19 07:09:43,349 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 [2023-11-19 07:09:43,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,361 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,362 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:43,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:43,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,378 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,385 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 [2023-11-19 07:09:43,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2023-11-19 07:09:43,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:43,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:43,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:43,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:43,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:43,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:43,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:43,417 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:09:43,430 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:09:43,430 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:09:43,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:43,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:43,433 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:43,434 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:09:43,435 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:09:43,435 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:09:43,435 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-19 07:09:43,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-11-19 07:09:43,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:43,455 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:09:43,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:43,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:09:43,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:43,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:09:43,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:09:44,012 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2023-11-19 07:09:44,013 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:09:44,567 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 323 states and 426 transitions. Complement of second has 46 states. [2023-11-19 07:09:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2023-11-19 07:09:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:09:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2023-11-19 07:09:44,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2023-11-19 07:09:44,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:44,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2023-11-19 07:09:44,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:44,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2023-11-19 07:09:44,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:44,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 323 states and 426 transitions. [2023-11-19 07:09:44,580 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2023-11-19 07:09:44,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 323 states to 280 states and 379 transitions. [2023-11-19 07:09:44,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 183 [2023-11-19 07:09:44,587 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 187 [2023-11-19 07:09:44,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 280 states and 379 transitions. [2023-11-19 07:09:44,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:44,591 INFO L218 hiAutomatonCegarLoop]: Abstraction has 280 states and 379 transitions. [2023-11-19 07:09:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states and 379 transitions. [2023-11-19 07:09:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2023-11-19 07:09:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 161 states have internal predecessors, (182), 50 states have call successors, (51), 33 states have call predecessors, (51), 40 states have return successors, (92), 51 states have call predecessors, (92), 47 states have call successors, (92) [2023-11-19 07:09:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 325 transitions. [2023-11-19 07:09:44,639 INFO L240 hiAutomatonCegarLoop]: Abstraction has 246 states and 325 transitions. [2023-11-19 07:09:44,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:09:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:09:44,640 INFO L87 Difference]: Start difference. First operand 246 states and 325 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 07:09:44,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:44,843 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2023-11-19 07:09:44,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2023-11-19 07:09:44,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:09:44,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2023-11-19 07:09:44,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2023-11-19 07:09:44,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2023-11-19 07:09:44,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2023-11-19 07:09:44,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:44,853 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2023-11-19 07:09:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2023-11-19 07:09:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2023-11-19 07:09:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.131578947368421) internal successors, (86), 80 states have internal predecessors, (86), 20 states have call successors, (20), 15 states have call predecessors, (20), 20 states have return successors, (33), 20 states have call predecessors, (33), 17 states have call successors, (33) [2023-11-19 07:09:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2023-11-19 07:09:44,861 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 139 transitions. [2023-11-19 07:09:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:09:44,865 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 139 transitions. [2023-11-19 07:09:44,866 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:09:44,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 139 transitions. [2023-11-19 07:09:44,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:09:44,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:44,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:44,876 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:44,876 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:44,881 INFO L748 eck$LassoCheckResult]: Stem: 5254#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5231#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5232#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5257#$Ultimate##0 ~n := #in~n; 5258#L10 assume !(~n < 1); 5245#L12 assume !(1 == ~n); 5210#L15 call #t~ret4 := fibo2(~n - 1);< 5215#$Ultimate##0 ~n := #in~n; 5216#L20 assume !(~n < 1); 5209#L22 assume !(1 == ~n); 5211#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5230#L10 assume !(~n < 1); 5248#L12 assume !(1 == ~n); 5242#L15 call #t~ret4 := fibo2(~n - 1);< 5251#$Ultimate##0 ~n := #in~n; 5300#L20 assume !(~n < 1); 5299#L22 assume !(1 == ~n); 5224#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5230#L10 assume !(~n < 1); 5248#L12 assume !(1 == ~n); 5242#L15 call #t~ret4 := fibo2(~n - 1);< 5251#$Ultimate##0 ~n := #in~n; 5300#L20 assume !(~n < 1); 5299#L22 assume !(1 == ~n); 5224#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5229#L10 assume !(~n < 1); 5261#L12 assume 1 == ~n;#res := 1; 5267#fibo1FINAL assume true; 5298#fibo1EXIT >#48#return; 5218#L25-1 call #t~ret7 := fibo1(~n - 2);< 5226#$Ultimate##0 ~n := #in~n; 5227#L10 assume ~n < 1;#res := 0; 5217#fibo1FINAL assume true; 5219#fibo1EXIT >#50#return; 5294#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5292#fibo2FINAL assume true; 5288#fibo2EXIT >#52#return; 5207#L15-1 call #t~ret5 := fibo2(~n - 2);< 5284#$Ultimate##0 ~n := #in~n; 5252#L20 assume ~n < 1;#res := 0; 5208#fibo2FINAL assume true; 5246#fibo2EXIT >#54#return; 5282#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5280#fibo1FINAL assume true; 5274#fibo1EXIT >#48#return; 5235#L25-1 [2023-11-19 07:09:44,881 INFO L750 eck$LassoCheckResult]: Loop: 5235#L25-1 call #t~ret7 := fibo1(~n - 2);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume !(1 == ~n); 5221#L15 call #t~ret4 := fibo2(~n - 1);< 5266#$Ultimate##0 ~n := #in~n; 5279#L20 assume !(~n < 1); 5277#L22 assume !(1 == ~n); 5236#L25 call #t~ret6 := fibo1(~n - 1);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume !(1 == ~n); 5221#L15 call #t~ret4 := fibo2(~n - 1);< 5266#$Ultimate##0 ~n := #in~n; 5279#L20 assume !(~n < 1); 5277#L22 assume !(1 == ~n); 5236#L25 call #t~ret6 := fibo1(~n - 1);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume 1 == ~n;#res := 1; 5260#fibo1FINAL assume true; 5317#fibo1EXIT >#48#return; 5220#L25-1 call #t~ret7 := fibo1(~n - 2);< 5222#$Ultimate##0 ~n := #in~n; 5319#L10 assume ~n < 1;#res := 0; 5269#fibo1FINAL assume true; 5307#fibo1EXIT >#50#return; 5233#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5234#fibo2FINAL assume true; 5289#fibo2EXIT >#52#return; 5286#L15-1 call #t~ret5 := fibo2(~n - 2);< 5287#$Ultimate##0 ~n := #in~n; 5320#L20 assume ~n < 1;#res := 0; 5314#fibo2FINAL assume true; 5313#fibo2EXIT >#54#return; 5283#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5281#fibo1FINAL assume true; 5275#fibo1EXIT >#48#return; 5235#L25-1 [2023-11-19 07:09:44,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 316829921, now seen corresponding path program 1 times [2023-11-19 07:09:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138259363] [2023-11-19 07:09:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:09:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:09:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:09:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138259363] [2023-11-19 07:09:45,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138259363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699574273] [2023-11-19 07:09:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:45,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:45,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:45,137 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:45,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-19 07:09:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:09:45,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:09:45,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:09:45,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699574273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:45,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:45,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2023-11-19 07:09:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959644217] [2023-11-19 07:09:45,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:45,626 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:09:45,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1700861918, now seen corresponding path program 1 times [2023-11-19 07:09:45,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:45,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156154760] [2023-11-19 07:09:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:45,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:09:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:09:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:09:45,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156154760] [2023-11-19 07:09:45,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156154760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161294615] [2023-11-19 07:09:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:45,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:45,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:45,776 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:45,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-19 07:09:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:45,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:09:45,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:09:45,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:09:46,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161294615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:46,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:46,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2023-11-19 07:09:46,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002555223] [2023-11-19 07:09:46,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:46,195 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:09:46,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:46,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:09:46,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:09:46,196 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. cyclomatic complexity: 25 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-19 07:09:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:46,349 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2023-11-19 07:09:46,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2023-11-19 07:09:46,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-19 07:09:46,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2023-11-19 07:09:46,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2023-11-19 07:09:46,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2023-11-19 07:09:46,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2023-11-19 07:09:46,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:46,355 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2023-11-19 07:09:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2023-11-19 07:09:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2023-11-19 07:09:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 81 states have internal predecessors, (87), 20 states have call successors, (20), 16 states have call predecessors, (20), 20 states have return successors, (32), 20 states have call predecessors, (32), 17 states have call successors, (32) [2023-11-19 07:09:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2023-11-19 07:09:46,360 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 139 transitions. [2023-11-19 07:09:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:09:46,362 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 139 transitions. [2023-11-19 07:09:46,362 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:09:46,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 139 transitions. [2023-11-19 07:09:46,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-19 07:09:46,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:46,364 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:46,365 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:46,365 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:46,366 INFO L748 eck$LassoCheckResult]: Stem: 6157#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6135#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6136#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6159#$Ultimate##0 ~n := #in~n; 6162#L10 assume !(~n < 1); 6150#L12 assume !(1 == ~n); 6118#L15 call #t~ret4 := fibo2(~n - 1);< 6176#$Ultimate##0 ~n := #in~n; 6193#L20 assume !(~n < 1); 6117#L22 assume !(1 == ~n); 6119#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6141#L10 assume !(~n < 1); 6154#L12 assume !(1 == ~n); 6124#L15 call #t~ret4 := fibo2(~n - 1);< 6123#$Ultimate##0 ~n := #in~n; 6125#L20 assume !(~n < 1); 6156#L22 assume !(1 == ~n); 6133#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6141#L10 assume !(~n < 1); 6154#L12 assume !(1 == ~n); 6124#L15 call #t~ret4 := fibo2(~n - 1);< 6123#$Ultimate##0 ~n := #in~n; 6125#L20 assume !(~n < 1); 6156#L22 assume !(1 == ~n); 6133#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6140#L10 assume !(~n < 1); 6170#L12 assume 1 == ~n;#res := 1; 6174#fibo1FINAL assume true; 6220#fibo1EXIT >#48#return; 6127#L25-1 call #t~ret7 := fibo1(~n - 2);< 6218#$Ultimate##0 ~n := #in~n; 6153#L10 assume ~n < 1;#res := 0; 6126#fibo1FINAL assume true; 6128#fibo1EXIT >#50#return; 6216#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6215#fibo2FINAL assume true; 6192#fibo2EXIT >#52#return; 6115#L15-1 call #t~ret5 := fibo2(~n - 2);< 6191#$Ultimate##0 ~n := #in~n; 6155#L20 assume !(~n < 1); 6114#L22 assume 1 == ~n;#res := 1; 6116#fibo2FINAL assume true; 6190#fibo2EXIT >#54#return; 6188#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6186#fibo1FINAL assume true; 6183#fibo1EXIT >#48#return; 6164#L25-1 [2023-11-19 07:09:46,366 INFO L750 eck$LassoCheckResult]: Loop: 6164#L25-1 call #t~ret7 := fibo1(~n - 2);< 6131#$Ultimate##0 ~n := #in~n; 6228#L10 assume !(~n < 1); 6163#L12 assume !(1 == ~n); 6147#L15 call #t~ret4 := fibo2(~n - 1);< 6172#$Ultimate##0 ~n := #in~n; 6171#L20 assume !(~n < 1); 6168#L22 assume !(1 == ~n); 6165#L25 call #t~ret6 := fibo1(~n - 1);< 6143#$Ultimate##0 ~n := #in~n; 6177#L10 assume !(~n < 1); 6163#L12 assume !(1 == ~n); 6147#L15 call #t~ret4 := fibo2(~n - 1);< 6172#$Ultimate##0 ~n := #in~n; 6171#L20 assume !(~n < 1); 6168#L22 assume !(1 == ~n); 6165#L25 call #t~ret6 := fibo1(~n - 1);< 6143#$Ultimate##0 ~n := #in~n; 6177#L10 assume !(~n < 1); 6163#L12 assume 1 == ~n;#res := 1; 6167#fibo1FINAL assume true; 6223#fibo1EXIT >#48#return; 6181#L25-1 call #t~ret7 := fibo1(~n - 2);< 6222#$Ultimate##0 ~n := #in~n; 6229#L10 assume ~n < 1;#res := 0; 6227#fibo1FINAL assume true; 6221#fibo1EXIT >#50#return; 6219#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6217#fibo2FINAL assume true; 6213#fibo2EXIT >#52#return; 6158#L15-1 call #t~ret5 := fibo2(~n - 2);< 6203#$Ultimate##0 ~n := #in~n; 6208#L20 assume !(~n < 1); 6206#L22 assume 1 == ~n;#res := 1; 6205#fibo2FINAL assume true; 6202#fibo2EXIT >#54#return; 6201#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6185#fibo1FINAL assume true; 6182#fibo1EXIT >#48#return; 6164#L25-1 [2023-11-19 07:09:46,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1955236566, now seen corresponding path program 1 times [2023-11-19 07:09:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:46,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645572324] [2023-11-19 07:09:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:46,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:09:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:46,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:46,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:09:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:09:46,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645572324] [2023-11-19 07:09:46,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645572324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:46,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969007849] [2023-11-19 07:09:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:46,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:46,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:46,588 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:46,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-19 07:09:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:46,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:09:46,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:09:46,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:09:47,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969007849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:47,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:47,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2023-11-19 07:09:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048243727] [2023-11-19 07:09:47,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:47,087 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:09:47,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash -463668299, now seen corresponding path program 1 times [2023-11-19 07:09:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645920685] [2023-11-19 07:09:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:47,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:47,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:47,566 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:47,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:47,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:47,566 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:47,567 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:09:47,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:47,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:47,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration8_Loop [2023-11-19 07:09:47,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:47,567 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:47,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,571 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,576 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,578 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,580 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,585 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,587 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:47,635 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:09:47,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:47,637 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:47,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-19 07:09:47,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:47,639 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:47,650 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:47,651 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=4} Honda state: {fibo2_#in~n=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:47,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2023-11-19 07:09:47,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:47,671 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:47,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-19 07:09:47,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:47,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:47,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2023-11-19 07:09:47,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:47,708 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:47,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-19 07:09:47,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:09:47,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:47,743 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:09:47,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2023-11-19 07:09:47,755 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:47,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:47,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:47,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:47,756 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:09:47,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:47,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:47,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration8_Loop [2023-11-19 07:09:47,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:47,756 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:47,757 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,765 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,779 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,787 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,790 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:47,853 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:47,853 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:09:47,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:47,854 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:47,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:09:47,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-19 07:09:47,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:47,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:47,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:47,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:47,876 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:47,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:47,877 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:47,886 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:47,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:47,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:47,908 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:47,911 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 [2023-11-19 07:09:47,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:47,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:47,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:47,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:47,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:47,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:47,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:47,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-19 07:09:47,936 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:47,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:47,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:47,957 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:47,960 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 [2023-11-19 07:09:47,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-19 07:09:47,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:47,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:47,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:47,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:47,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:47,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:47,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:47,992 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:09:47,996 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:09:47,996 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:09:47,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:47,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:47,998 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:48,000 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:09:48,000 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:09:48,000 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:09:48,000 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-19 07:09:48,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-19 07:09:48,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:48,021 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:09:48,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:48,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:09:48,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:48,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:09:48,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:48,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:09:48,826 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2023-11-19 07:09:48,827 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:09:49,055 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 13 states. [2023-11-19 07:09:49,055 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 [2023-11-19 07:09:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:09:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2023-11-19 07:09:49,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-19 07:09:49,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:49,057 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:09:49,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:49,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:09:49,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:49,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:09:49,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:09:49,833 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 11 loop predicates [2023-11-19 07:09:49,833 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:09:50,032 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 13 states. [2023-11-19 07:09:50,033 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 [2023-11-19 07:09:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:09:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2023-11-19 07:09:50,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-19 07:09:50,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:50,035 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:09:50,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:50,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:09:50,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:50,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:09:50,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:09:50,737 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 11 loop predicates [2023-11-19 07:09:50,738 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:09:51,337 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 559 states and 690 transitions. Complement of second has 139 states. [2023-11-19 07:09:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2023-11-19 07:09:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:09:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 81 transitions. [2023-11-19 07:09:51,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-19 07:09:51,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:51,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 88 letters. Loop has 39 letters. [2023-11-19 07:09:51,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:51,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 49 letters. Loop has 78 letters. [2023-11-19 07:09:51,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:51,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 559 states and 690 transitions. [2023-11-19 07:09:51,362 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2023-11-19 07:09:51,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 559 states to 402 states and 496 transitions. [2023-11-19 07:09:51,369 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 227 [2023-11-19 07:09:51,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2023-11-19 07:09:51,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 496 transitions. [2023-11-19 07:09:51,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:51,370 INFO L218 hiAutomatonCegarLoop]: Abstraction has 402 states and 496 transitions. [2023-11-19 07:09:51,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states and 496 transitions. [2023-11-19 07:09:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 330. [2023-11-19 07:09:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 212 states have (on average 1.1367924528301887) internal successors, (241), 224 states have internal predecessors, (241), 62 states have call successors, (64), 43 states have call predecessors, (64), 56 states have return successors, (94), 62 states have call predecessors, (94), 59 states have call successors, (94) [2023-11-19 07:09:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 399 transitions. [2023-11-19 07:09:51,392 INFO L240 hiAutomatonCegarLoop]: Abstraction has 330 states and 399 transitions. [2023-11-19 07:09:51,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:09:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:09:51,394 INFO L87 Difference]: Start difference. First operand 330 states and 399 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:09:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:51,770 INFO L93 Difference]: Finished difference Result 228 states and 240 transitions. [2023-11-19 07:09:51,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 240 transitions. [2023-11-19 07:09:51,774 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-19 07:09:51,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 117 states and 123 transitions. [2023-11-19 07:09:51,776 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2023-11-19 07:09:51,776 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2023-11-19 07:09:51,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 123 transitions. [2023-11-19 07:09:51,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:09:51,776 INFO L218 hiAutomatonCegarLoop]: Abstraction has 117 states and 123 transitions. [2023-11-19 07:09:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 123 transitions. [2023-11-19 07:09:51,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-11-19 07:09:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.064102564102564) internal successors, (83), 81 states have internal predecessors, (83), 21 states have call successors, (21), 18 states have call predecessors, (21), 17 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-19 07:09:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2023-11-19 07:09:51,782 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 122 transitions. [2023-11-19 07:09:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:09:51,783 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 122 transitions. [2023-11-19 07:09:51,783 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-19 07:09:51,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 122 transitions. [2023-11-19 07:09:51,785 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-19 07:09:51,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:09:51,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:09:51,786 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:51,786 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:09:51,787 INFO L748 eck$LassoCheckResult]: Stem: 9106#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 9084#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 9085#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9109#$Ultimate##0 ~n := #in~n; 9110#L10 assume !(~n < 1); 9094#L12 assume !(1 == ~n); 9067#L15 call #t~ret4 := fibo2(~n - 1);< 9071#$Ultimate##0 ~n := #in~n; 9072#L20 assume !(~n < 1); 9066#L22 assume !(1 == ~n); 9068#L25 call #t~ret6 := fibo1(~n - 1);< 9080#$Ultimate##0 ~n := #in~n; 9083#L10 assume !(~n < 1); 9097#L12 assume !(1 == ~n); 9089#L15 call #t~ret4 := fibo2(~n - 1);< 9099#$Ultimate##0 ~n := #in~n; 9103#L20 assume !(~n < 1); 9104#L22 assume !(1 == ~n); 9081#L25 call #t~ret6 := fibo1(~n - 1);< 9080#$Ultimate##0 ~n := #in~n; 9082#L10 assume !(~n < 1); 9142#L12 assume 1 == ~n;#res := 1; 9141#fibo1FINAL assume true; 9138#fibo1EXIT >#48#return; 9136#L25-1 call #t~ret7 := fibo1(~n - 2);< 9137#$Ultimate##0 ~n := #in~n; 9140#L10 assume ~n < 1;#res := 0; 9139#fibo1FINAL assume true; 9135#fibo1EXIT >#50#return; 9134#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9133#fibo2FINAL assume true; 9131#fibo2EXIT >#52#return; 9127#L15-1 call #t~ret5 := fibo2(~n - 2);< 9128#$Ultimate##0 ~n := #in~n; 9132#L20 assume !(~n < 1); 9130#L22 assume 1 == ~n;#res := 1; 9129#fibo2FINAL assume true; 9126#fibo2EXIT >#54#return; 9125#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 9124#fibo1FINAL assume true; 9123#fibo1EXIT >#48#return; 9093#L25-1 call #t~ret7 := fibo1(~n - 2);< 9122#$Ultimate##0 ~n := #in~n; 9170#L10 assume !(~n < 1); 9091#L12 assume !(1 == ~n); 9076#L15 call #t~ret4 := fibo2(~n - 1);< 9151#$Ultimate##0 ~n := #in~n; 9167#L20 assume !(~n < 1); 9164#L22 assume !(1 == ~n); 9098#L25 call #t~ret6 := fibo1(~n - 1);< 9175#$Ultimate##0 ~n := #in~n; 9178#L10 assume !(~n < 1); 9177#L12 assume !(1 == ~n); 9064#L15 [2023-11-19 07:09:51,787 INFO L750 eck$LassoCheckResult]: Loop: 9064#L15 call #t~ret4 := fibo2(~n - 1);< 9069#$Ultimate##0 ~n := #in~n; 9070#L20 assume !(~n < 1); 9063#L22 assume !(1 == ~n); 9065#L25 call #t~ret6 := fibo1(~n - 1);< 9088#$Ultimate##0 ~n := #in~n; 9153#L10 assume !(~n < 1); 9149#L12 assume !(1 == ~n); 9064#L15 [2023-11-19 07:09:51,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash -259516613, now seen corresponding path program 2 times [2023-11-19 07:09:51,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:51,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195974581] [2023-11-19 07:09:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:51,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:09:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:51,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:09:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:09:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:09:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:09:51,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:09:51,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195974581] [2023-11-19 07:09:51,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195974581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:09:51,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579842023] [2023-11-19 07:09:51,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:09:51,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:09:51,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:51,977 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:09:52,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-19 07:09:52,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:09:52,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:09:52,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:09:52,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:09:52,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:09:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:09:52,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579842023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:09:52,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:09:52,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2023-11-19 07:09:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449188466] [2023-11-19 07:09:52,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:09:52,279 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:09:52,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 2 times [2023-11-19 07:09:52,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:09:52,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056615643] [2023-11-19 07:09:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:09:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:09:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:52,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:09:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:09:52,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:09:52,455 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:52,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:52,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:52,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:52,456 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:09:52,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:52,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:52,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:52,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2023-11-19 07:09:52,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:52,457 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:52,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,477 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,479 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,488 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:52,556 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:52,557 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:09:52,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:52,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:52,561 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:52,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:52,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:52,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-19 07:09:52,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:09:52,596 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:09:52,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2023-11-19 07:09:52,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:52,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:52,616 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:52,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-19 07:09:52,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:09:52,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:52,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:52,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:52,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:52,678 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:52,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:09:52,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:09:52,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-19 07:09:55,965 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:09:55,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2023-11-19 07:09:55,969 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:09:55,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:09:55,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:09:55,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:09:55,970 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:09:55,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:55,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:09:55,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:09:55,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2023-11-19 07:09:55,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:09:55,970 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:09:55,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:55,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:55,987 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:55,989 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:55,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:55,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:55,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:56,001 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:09:56,059 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:09:56,059 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:09:56,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:56,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:56,061 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:56,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-19 07:09:56,065 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 [2023-11-19 07:09:56,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:56,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:56,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:56,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:56,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:56,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:56,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:56,078 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:09:56,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-11-19 07:09:56,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:56,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:56,092 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:56,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-19 07:09:56,094 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 [2023-11-19 07:09:56,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:09:56,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:09:56,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:09:56,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:09:56,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:09:56,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:09:56,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:09:56,110 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:09:56,113 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:09:56,113 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:09:56,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:09:56,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:09:56,115 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:09:56,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-19 07:09:56,117 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:09:56,117 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:09:56,117 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:09:56,117 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-19 07:09:56,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-19 07:09:56,133 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:09:56,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:56,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:09:56,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:56,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:56,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:09:56,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:56,699 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 [2023-11-19 07:09:56,700 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:09:56,798 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 130 states and 137 transitions. Complement of second has 19 states. [2023-11-19 07:09:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-19 07:09:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:09:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2023-11-19 07:09:56,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-19 07:09:56,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:56,800 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:09:56,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:56,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:09:56,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:57,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:09:57,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:57,323 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 [2023-11-19 07:09:57,323 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:09:57,506 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 136 states and 143 transitions. Complement of second has 21 states. [2023-11-19 07:09:57,506 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 [2023-11-19 07:09:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:09:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2023-11-19 07:09:57,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 20 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-19 07:09:57,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:57,508 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:09:57,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:09:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:57,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:09:57,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:09:57,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:09:57,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:09:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:09:58,031 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 [2023-11-19 07:09:58,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:09:58,201 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 189 states and 199 transitions. Complement of second has 30 states. [2023-11-19 07:09:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-19 07:09:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:09:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-19 07:09:58,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-19 07:09:58,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:58,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-19 07:09:58,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:58,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 53 letters. Loop has 16 letters. [2023-11-19 07:09:58,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:09:58,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 199 transitions. [2023-11-19 07:09:58,207 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:09:58,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 0 states and 0 transitions. [2023-11-19 07:09:58,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:09:58,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:09:58,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:09:58,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:09:58,208 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:09:58,208 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:09:58,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:09:58,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:09:58,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:09:58,211 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:09:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:09:58,211 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-19 07:09:58,211 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-19 07:09:58,211 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:09:58,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:09:58,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:09:58,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:09:58,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:09:58,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:09:58,212 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:09:58,212 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:09:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:09:58,213 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:09:58,213 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-19 07:09:58,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:09:58,213 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:09:58,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:09:58,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:09:58 BoogieIcfgContainer [2023-11-19 07:09:58,223 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:09:58,223 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:09:58,223 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:09:58,224 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:09:58,224 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:32" (3/4) ... [2023-11-19 07:09:58,226 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:09:58,228 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:09:58,229 INFO L158 Benchmark]: Toolchain (without parser) took 26774.57ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 101.3MB in the beginning and 86.3MB in the end (delta: 15.0MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2023-11-19 07:09:58,229 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:09:58,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.22ms. Allocated memory is still 138.4MB. Free memory was 100.9MB in the beginning and 90.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:09:58,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.78ms. Allocated memory is still 138.4MB. Free memory was 90.8MB in the beginning and 89.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:09:58,230 INFO L158 Benchmark]: Boogie Preprocessor took 18.76ms. Allocated memory is still 138.4MB. Free memory was 89.6MB in the beginning and 88.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:09:58,230 INFO L158 Benchmark]: RCFGBuilder took 356.07ms. Allocated memory is still 138.4MB. Free memory was 88.4MB in the beginning and 78.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:09:58,231 INFO L158 Benchmark]: BuchiAutomizer took 26120.84ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 78.3MB in the beginning and 87.4MB in the end (delta: -9.1MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-19 07:09:58,231 INFO L158 Benchmark]: Witness Printer took 4.62ms. Allocated memory is still 188.7MB. Free memory was 87.4MB in the beginning and 86.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:09:58,234 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.22ms. Allocated memory is still 138.4MB. Free memory was 100.9MB in the beginning and 90.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.78ms. Allocated memory is still 138.4MB. Free memory was 90.8MB in the beginning and 89.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.76ms. Allocated memory is still 138.4MB. Free memory was 89.6MB in the beginning and 88.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 356.07ms. Allocated memory is still 138.4MB. Free memory was 88.4MB in the beginning and 78.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 26120.84ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 78.3MB in the beginning and 87.4MB in the end (delta: -9.1MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. * Witness Printer took 4.62ms. Allocated memory is still 188.7MB. Free memory was 87.4MB in the beginning and 86.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 15 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 26.0s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 16.2s. Construction of modules took 1.8s. Büchi inclusion checks took 7.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 180 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/51 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 772 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 745 mSDsluCounter, 1307 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 973 mSDsCounter, 379 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2228 IncrementalHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 379 mSolverCounterUnsat, 334 mSDtfsCounter, 2228 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf90 smp81 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 20 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 07:09:58,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:58,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-19 07:09:58,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-19 07:09:58,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-19 07:09:59,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-19 07:09:59,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-19 07:09:59,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-19 07:09:59,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-19 07:09:59,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-19 07:10:00,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196402b9-9886-4175-adef-0975180c7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE