./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/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_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/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_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:22,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:22,201 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:41:22,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:22,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:22,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:22,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:22,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:22,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:22,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:22,261 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:22,262 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:41:22,262 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:41:22,265 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:41:22,265 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:41:22,265 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:41:22,266 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:41:22,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:22,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:41:22,268 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:22,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:22,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:22,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:22,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:41:22,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:41:22,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:41:22,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:41:22,272 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:22,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:22,272 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:41:22,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:22,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:22,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:22,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:22,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:22,276 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:41:22,276 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_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2023-11-19 07:41:22,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:22,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:22,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:22,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:22,690 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:22,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2023-11-19 07:41:25,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:25,996 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:25,997 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2023-11-19 07:41:26,005 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/data/ef029bb31/1a92c529caf746a1ac8083eac3780b48/FLAG4c1d87d91 [2023-11-19 07:41:26,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/data/ef029bb31/1a92c529caf746a1ac8083eac3780b48 [2023-11-19 07:41:26,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:26,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:26,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:26,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:26,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:26,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46511671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26, skipping insertion in model container [2023-11-19 07:41:26,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,075 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:26,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:26,284 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:26,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:26,317 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:26,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26 WrapperNode [2023-11-19 07:41:26,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:26,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:26,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:26,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:26,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,354 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-19 07:41:26,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:26,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:26,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:26,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:26,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:26,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:26,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:26,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:26,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (1/1) ... [2023-11-19 07:41:26,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:26,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:26,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:26,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-19 07:41:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-19 07:41:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-19 07:41:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-19 07:41:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:26,560 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:26,562 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:26,784 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:26,801 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:26,803 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:26,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:26 BoogieIcfgContainer [2023-11-19 07:41:26,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:26,810 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:41:26,810 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:41:26,815 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:41:26,816 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:41:26,816 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:41:26" (1/3) ... [2023-11-19 07:41:26,817 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57a7d680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:41:26, skipping insertion in model container [2023-11-19 07:41:26,819 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:41:26,819 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:26" (2/3) ... [2023-11-19 07:41:26,821 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57a7d680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:41:26, skipping insertion in model container [2023-11-19 07:41:26,821 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:41:26,821 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:26" (3/3) ... [2023-11-19 07:41:26,822 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_6-1.c [2023-11-19 07:41:26,906 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:41:26,906 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:41:26,907 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:41:26,907 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:41:26,907 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:41:26,907 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:41:26,908 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:41:26,908 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:41:26,914 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 07:41:26,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:26,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:26,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:26,953 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:41:26,953 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:26,953 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:41:26,954 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 07:41:26,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:26,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:26,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:26,962 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:41:26,963 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:26,972 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-19 07:41:26,972 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 07:41:26,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-19 07:41:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:26,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365091542] [2023-11-19 07:41:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:26,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:27,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:27,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-19 07:41:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704075646] [2023-11-19 07:41:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:27,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:27,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:27,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-19 07:41:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:27,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624562680] [2023-11-19 07:41:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:27,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:27,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:27,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:27,534 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:27,535 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:27,535 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:27,535 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:27,535 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:27,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:27,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:27,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:27,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration1_Loop [2023-11-19 07:41:27,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:27,537 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:27,557 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 07:41:27,569 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 07:41:27,572 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 07:41:27,576 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 07:41:27,579 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 07:41:27,583 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 07:41:27,586 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 07:41:27,590 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 07:41:27,682 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:27,682 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:27,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:27,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:27,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:27,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:27,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:27,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:41:27,734 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:27,734 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 07:41:27,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:27,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:27,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:27,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:27,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:27,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:27,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:41:27,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:27,807 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 07:41:27,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:27,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:27,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:27,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:27,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:27,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:27,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:41:27,875 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:27,875 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 07:41:27,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:27,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:27,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:27,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:27,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:41:27,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:27,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:27,918 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:27,918 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 07:41:27,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:27,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:27,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:27,940 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:27,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:27,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:27,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:41:27,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:27,970 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 07:41:27,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:27,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:27,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:27,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:27,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:28,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:41:28,030 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:28,030 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 07:41:28,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,057 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:28,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:28,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:41:28,086 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:28,086 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 07:41:28,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,104 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:41:28,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:28,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:28,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-19 07:41:28,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:28,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:28,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:41:28,250 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:28,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,259 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:28,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:28,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:28,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:28,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:28,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:28,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:28,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration1_Loop [2023-11-19 07:41:28,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:28,261 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:28,262 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 07:41:28,268 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 07:41:28,272 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 07:41:28,275 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 07:41:28,284 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 07:41:28,288 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 07:41:28,300 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 07:41:28,303 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 07:41:28,379 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:28,384 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:28,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:41:28,396 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 07:41:28,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:28,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:28,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:28,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:28,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:28,413 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:28,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:28,423 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:28,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,459 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 07:41:28,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:28,474 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:28,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:28,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:28,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:28,475 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:28,476 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:28,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:41:28,486 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:28,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:41:28,508 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 07:41:28,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:28,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:28,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:28,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:28,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:28,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:28,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:28,530 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:28,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:41:28,546 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 07:41:28,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:28,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:28,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:28,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:28,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:28,558 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:28,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:28,567 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:28,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,589 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:41:28,591 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 07:41:28,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:28,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:28,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:28,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:28,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:28,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:28,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:28,614 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:28,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,632 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:41:28,634 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 07:41:28,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:28,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:28,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:28,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:28,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:28,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:28,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:28,682 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:28,686 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:28,686 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:28,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,719 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,731 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:28,731 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:28,732 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:28,732 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-19 07:41:28,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:41:28,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:28,755 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:28,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:41:28,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:28,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:28,998 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 07:41:29,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:29,071 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 07:41:29,074 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 07:41:29,267 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 07:41:29,269 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 07:41:29,274 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 07:41:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-19 07:41:29,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-19 07:41:29,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:29,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-19 07:41:29,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:29,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-19 07:41:29,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:29,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-19 07:41:29,287 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:29,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-19 07:41:29,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-19 07:41:29,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-19 07:41:29,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-19 07:41:29,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:29,299 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-19 07:41:29,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-19 07:41:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-19 07:41:29,334 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 07:41:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-19 07:41:29,337 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-19 07:41:29,337 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-19 07:41:29,337 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:41:29,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-19 07:41:29,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:29,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:29,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:29,341 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:29,341 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:29,342 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 := 6; 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#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-19 07:41:29,343 INFO L750 eck$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 07:41:29,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:29,344 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-19 07:41:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:29,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236328405] [2023-11-19 07:41:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:29,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,534 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 07:41:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236328405] [2023-11-19 07:41:29,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236328405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:29,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:29,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041317475] [2023-11-19 07:41:29,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:29,538 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:29,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-19 07:41:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537201685] [2023-11-19 07:41:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:41:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,663 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 07:41:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:29,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537201685] [2023-11-19 07:41:29,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537201685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:29,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:29,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109881653] [2023-11-19 07:41:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:29,665 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:41:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:29,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:29,669 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 07:41:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:29,743 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-19 07:41:29,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-19 07:41:29,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:29,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-19 07:41:29,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-19 07:41:29,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-19 07:41:29,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-19 07:41:29,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:29,750 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-19 07:41:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-19 07:41:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-19 07:41:29,757 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 07:41:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-19 07:41:29,758 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-19 07:41:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:29,760 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-19 07:41:29,760 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:41:29,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-19 07:41:29,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:29,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:29,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:29,763 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:29,763 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:29,763 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$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 07:41:29,763 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 07:41:29,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-19 07:41:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884319825] [2023-11-19 07:41:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,931 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 07:41:29,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:29,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884319825] [2023-11-19 07:41:29,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884319825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:29,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429638221] [2023-11-19 07:41:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:29,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:29,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:29,934 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:29,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:41:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:41:29,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:30,029 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 07:41:30,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:30,183 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 07:41:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429638221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:30,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:30,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-19 07:41:30,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682256837] [2023-11-19 07:41:30,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:30,185 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:30,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-19 07:41:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:30,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150899467] [2023-11-19 07:41:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:30,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:30,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:30,401 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:30,401 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:30,401 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:30,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:30,401 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:30,401 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,402 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:30,402 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:30,402 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration3_Loop [2023-11-19 07:41:30,402 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:30,402 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:30,403 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 07:41:30,406 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 07:41:30,408 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 07:41:30,411 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 07:41:30,413 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 07:41:30,415 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 07:41:30,420 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 07:41:30,423 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 07:41:30,425 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 07:41:30,483 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:30,484 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:30,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,485 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:30,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:30,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:41:30,522 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:30,522 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 07:41:30,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:30,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,548 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:30,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:30,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:41:30,617 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:30,617 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 07:41:30,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,643 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:30,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:30,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:41:30,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:30,673 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 07:41:30,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:30,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,699 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:30,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:30,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:41:30,730 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:30,730 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 07:41:30,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:30,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,756 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:30,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:30,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:41:30,786 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:30,786 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 07:41:30,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:30,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,806 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:30,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:30,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:41:30,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-19 07:41:30,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,844 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:41:30,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:30,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:30,866 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:30,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-19 07:41:30,880 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:30,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:30,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:30,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:30,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:30,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:30,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:30,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration3_Loop [2023-11-19 07:41:30,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:30,881 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:30,882 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 07:41:30,893 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 07:41:30,895 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 07:41:30,898 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 07:41:30,902 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 07:41:30,908 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 07:41:30,913 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 07:41:30,916 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 07:41:30,920 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 07:41:30,988 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:30,988 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:30,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,990 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:31,000 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 07:41:31,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:31,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:31,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:31,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:31,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:31,015 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:31,015 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:31,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:41:31,034 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:31,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-19 07:41:31,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:31,053 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:31,059 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 07:41:31,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:31,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:31,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:31,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:31,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:31,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:31,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:31,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:41:31,090 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:31,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:31,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:31,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:31,114 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:31,118 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 07:41:31,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:31,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:31,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:31,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:31,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:31,132 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:31,132 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:31,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:41:31,154 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:31,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:31,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:31,178 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:31,180 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 07:41:31,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:31,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:31,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:31,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:31,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:31,194 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:31,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:31,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:41:31,210 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:31,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:31,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:31,233 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:31,236 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 07:41:31,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:31,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:31,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:31,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:31,248 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:31,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:31,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:31,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:41:31,265 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:31,270 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:31,270 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:31,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:31,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:31,272 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:31,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:31,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:31,274 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:31,274 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-19 07:41:31,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:41:31,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:31,295 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:31,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:31,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:41:31,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:31,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:31,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:31,631 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 07:41:31,631 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 07:41:31,632 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 07:41:32,129 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 07:41:32,130 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 07:41:32,131 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 07:41:32,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-19 07:41:32,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-19 07:41:32,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:32,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-19 07:41:32,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:32,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-19 07:41:32,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:32,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-19 07:41:32,145 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:41:32,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-19 07:41:32,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-19 07:41:32,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-19 07:41:32,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-19 07:41:32,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:32,165 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-19 07:41:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-19 07:41:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-19 07:41:32,187 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 07:41:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-19 07:41:32,194 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-19 07:41:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:41:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:41:32,196 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 07:41:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:32,472 INFO L93 Difference]: Finished difference Result 209 states and 276 transitions. [2023-11-19 07:41:32,473 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 209 states and 276 transitions. [2023-11-19 07:41:32,483 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:41:32,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 209 states to 200 states and 267 transitions. [2023-11-19 07:41:32,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2023-11-19 07:41:32,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2023-11-19 07:41:32,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 267 transitions. [2023-11-19 07:41:32,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:32,498 INFO L218 hiAutomatonCegarLoop]: Abstraction has 200 states and 267 transitions. [2023-11-19 07:41:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 267 transitions. [2023-11-19 07:41:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 185. [2023-11-19 07:41:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 124 states have internal predecessors, (142), 43 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (62), 37 states have call predecessors, (62), 41 states have call successors, (62) [2023-11-19 07:41:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2023-11-19 07:41:32,519 INFO L240 hiAutomatonCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-19 07:41:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:41:32,530 INFO L428 stractBuchiCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-19 07:41:32,530 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:41:32,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 249 transitions. [2023-11-19 07:41:32,532 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:41:32,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:32,532 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:32,534 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:32,534 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:32,534 INFO L748 eck$LassoCheckResult]: Stem: 1299#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 1277#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1302#$Ultimate##0 ~n := #in~n; 1342#L10 assume !(~n < 1); 1341#L12 assume !(1 == ~n); 1241#L15 call #t~ret4 := fibo2(~n - 1);< 1340#$Ultimate##0 ~n := #in~n; 1339#L20 assume !(~n < 1); 1240#L22 assume !(1 == ~n); 1242#L25 call #t~ret6 := fibo1(~n - 1);< 1274#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1288#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1294#$Ultimate##0 ~n := #in~n; 1296#L20 assume !(~n < 1); 1297#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1333#$Ultimate##0 ~n := #in~n; 1334#L10 assume !(~n < 1); 1344#L12 assume !(1 == ~n); 1345#L15 call #t~ret4 := fibo2(~n - 1);< 1353#$Ultimate##0 ~n := #in~n; 1357#L20 assume ~n < 1;#res := 0; 1356#fibo2FINAL assume true; 1352#fibo2EXIT >#52#return; 1349#L15-1 call #t~ret5 := fibo2(~n - 2);< 1350#$Ultimate##0 ~n := #in~n; 1354#L20 assume ~n < 1;#res := 0; 1351#fibo2FINAL assume true; 1348#fibo2EXIT >#54#return; 1346#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1347#fibo1FINAL assume true; 1414#fibo1EXIT >#48#return; 1267#L25-1 call #t~ret7 := fibo1(~n - 2);< 1332#$Ultimate##0 ~n := #in~n; 1371#L10 assume ~n < 1;#res := 0; 1420#fibo1FINAL assume true; 1265#fibo1EXIT >#50#return; 1269#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1280#fibo2FINAL assume true; 1289#fibo2EXIT >#52#return; 1298#L15-1 call #t~ret5 := fibo2(~n - 2);< 1362#$Ultimate##0 [2023-11-19 07:41:32,534 INFO L750 eck$LassoCheckResult]: Loop: 1362#$Ultimate##0 ~n := #in~n; 1417#L20 assume !(~n < 1); 1415#L22 assume !(1 == ~n); 1272#L25 call #t~ret6 := fibo1(~n - 1);< 1260#$Ultimate##0 ~n := #in~n; 1273#L10 assume !(~n < 1); 1293#L12 assume !(1 == ~n); 1361#L15 call #t~ret4 := fibo2(~n - 1);< 1362#$Ultimate##0 [2023-11-19 07:41:32,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-19 07:41:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986448955] [2023-11-19 07:41:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:41:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:41:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:41:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 07:41:32,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:32,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986448955] [2023-11-19 07:41:32,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986448955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:32,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683271217] [2023-11-19 07:41:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:32,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:32,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:32,689 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:32,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-19 07:41:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:41:32,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:32,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:41:32,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:41:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683271217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:33,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:33,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 20 [2023-11-19 07:41:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689584860] [2023-11-19 07:41:33,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:33,415 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:33,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-19 07:41:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106069168] [2023-11-19 07:41:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:33,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:33,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:33,539 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:33,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:33,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:33,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:33,540 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:33,540 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:33,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:33,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration4_Loop [2023-11-19 07:41:33,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:33,540 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:33,541 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 07:41:33,544 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 07:41:33,546 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 07:41:33,550 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 07:41:33,552 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 07:41:33,555 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 07:41:33,557 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 07:41:33,567 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 07:41:33,625 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:33,625 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:33,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,627 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:41:33,648 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:33,648 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 07:41:33,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:33,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,664 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 07:41:33,677 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:33,677 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 07:41:33,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-19 07:41:33,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,695 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 07:41:33,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,708 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:33,708 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 07:41:33,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,724 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 07:41:33,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,739 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:33,739 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 07:41:33,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:33,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,751 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 07:41:33,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,772 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:33,772 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 07:41:33,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-19 07:41:33,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,787 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-19 07:41:33,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:33,800 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 07:41:33,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-19 07:41:33,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,813 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-19 07:41:33,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-19 07:41:33,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,843 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-19 07:41:33,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:33,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,936 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:33,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2023-11-19 07:41:33,939 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:33,939 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:33,939 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:33,939 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:33,939 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:33,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,939 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:33,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:33,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration4_Loop [2023-11-19 07:41:33,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:33,940 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:33,941 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 07:41:33,945 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 07:41:33,947 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 07:41:33,949 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 07:41:33,951 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 07:41:33,952 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 07:41:33,954 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 07:41:33,959 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 07:41:34,022 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:34,022 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:34,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,024 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-19 07:41:34,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:41:34,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,042 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,044 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:34,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-19 07:41:34,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,057 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-19 07:41:34,061 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 07:41:34,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,073 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:34,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-11-19 07:41:34,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,087 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-19 07:41:34,089 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 07:41:34,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,134 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:34,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2023-11-19 07:41:34,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,148 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-19 07:41:34,150 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 07:41:34,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,160 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,167 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:34,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-19 07:41:34,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,182 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,184 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 07:41:34,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-19 07:41:34,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,197 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:34,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-19 07:41:34,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,209 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-19 07:41:34,211 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 07:41:34,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,221 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,222 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,222 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,238 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:34,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2023-11-19 07:41:34,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,252 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-19 07:41:34,254 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 07:41:34,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,268 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:34,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-19 07:41:34,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,282 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-19 07:41:34,283 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 07:41:34,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:34,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:34,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:34,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:34,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:34,295 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:34,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:34,297 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:34,312 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:34,312 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:34,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:34,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:34,313 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:34,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-19 07:41:34,315 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:34,315 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:34,315 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:34,315 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-19 07:41:34,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-19 07:41:34,334 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:34,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:34,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:34,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:34,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:34,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:34,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:34,929 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 07:41:34,931 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-19 07:41:34,932 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 07:41:35,188 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 691 states and 965 transitions. Complement of second has 26 states. [2023-11-19 07:41:35,189 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 07:41:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 07:41:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-19 07:41:35,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-19 07:41:35,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:35,195 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:35,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:35,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:35,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:35,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:35,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:35,700 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 07:41:35,701 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-19 07:41:35,701 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 07:41:35,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 691 states and 965 transitions. Complement of second has 26 states. [2023-11-19 07:41:35,889 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 07:41:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 07:41:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-19 07:41:35,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-19 07:41:35,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:35,891 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:35,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:35,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:35,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:36,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:36,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:36,390 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 07:41:36,390 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-19 07:41:36,391 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 07:41:36,566 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 576 states and 790 transitions. Complement of second has 25 states. [2023-11-19 07:41:36,567 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 07:41:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 07:41:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-19 07:41:36,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-19 07:41:36,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:36,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-19 07:41:36,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:36,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-19 07:41:36,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:36,575 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 576 states and 790 transitions. [2023-11-19 07:41:36,585 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-19 07:41:36,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 576 states to 465 states and 663 transitions. [2023-11-19 07:41:36,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 204 [2023-11-19 07:41:36,599 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 235 [2023-11-19 07:41:36,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 465 states and 663 transitions. [2023-11-19 07:41:36,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:36,605 INFO L218 hiAutomatonCegarLoop]: Abstraction has 465 states and 663 transitions. [2023-11-19 07:41:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states and 663 transitions. [2023-11-19 07:41:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 390. [2023-11-19 07:41:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 259 states have (on average 1.2702702702702702) internal successors, (329), 282 states have internal predecessors, (329), 76 states have call successors, (79), 58 states have call predecessors, (79), 55 states have return successors, (123), 49 states have call predecessors, (123), 74 states have call successors, (123) [2023-11-19 07:41:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 531 transitions. [2023-11-19 07:41:36,658 INFO L240 hiAutomatonCegarLoop]: Abstraction has 390 states and 531 transitions. [2023-11-19 07:41:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:41:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:41:36,660 INFO L87 Difference]: Start difference. First operand 390 states and 531 transitions. Second operand has 20 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 13 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-19 07:41:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:37,128 INFO L93 Difference]: Finished difference Result 469 states and 660 transitions. [2023-11-19 07:41:37,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 660 transitions. [2023-11-19 07:41:37,138 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:37,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 430 states and 616 transitions. [2023-11-19 07:41:37,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 237 [2023-11-19 07:41:37,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 238 [2023-11-19 07:41:37,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 616 transitions. [2023-11-19 07:41:37,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:37,148 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 616 transitions. [2023-11-19 07:41:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 616 transitions. [2023-11-19 07:41:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 381. [2023-11-19 07:41:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 247 states have (on average 1.2267206477732793) internal successors, (303), 276 states have internal predecessors, (303), 79 states have call successors, (82), 53 states have call predecessors, (82), 55 states have return successors, (138), 51 states have call predecessors, (138), 77 states have call successors, (138) [2023-11-19 07:41:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 523 transitions. [2023-11-19 07:41:37,170 INFO L240 hiAutomatonCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-19 07:41:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:41:37,171 INFO L428 stractBuchiCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-19 07:41:37,172 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:41:37,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 381 states and 523 transitions. [2023-11-19 07:41:37,176 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:37,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:37,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:37,180 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:37,180 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-19 07:41:37,181 INFO L748 eck$LassoCheckResult]: Stem: 5272#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5231#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 5232#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5279#$Ultimate##0 ~n := #in~n; 5329#L10 assume !(~n < 1); 5328#L12 assume !(1 == ~n); 5324#L15 call #t~ret4 := fibo2(~n - 1);< 5327#$Ultimate##0 ~n := #in~n; 5326#L20 assume !(~n < 1); 5325#L22 assume !(1 == ~n); 5320#L25 call #t~ret6 := fibo1(~n - 1);< 5323#$Ultimate##0 ~n := #in~n; 5322#L10 assume !(~n < 1); 5321#L12 assume !(1 == ~n); 5308#L15 call #t~ret4 := fibo2(~n - 1);< 5318#$Ultimate##0 ~n := #in~n; 5317#L20 assume !(~n < 1); 5313#L22 assume !(1 == ~n); 5251#L25 call #t~ret6 := fibo1(~n - 1);< 5309#$Ultimate##0 ~n := #in~n; 5315#L10 assume !(~n < 1); 5430#L12 assume !(1 == ~n); 5382#L15 call #t~ret4 := fibo2(~n - 1);< 5429#$Ultimate##0 ~n := #in~n; 5496#L20 assume !(~n < 1); 5494#L22 assume 1 == ~n;#res := 1; 5492#fibo2FINAL assume true; 5427#fibo2EXIT >#52#return; 5196#L15-1 call #t~ret5 := fibo2(~n - 2);< 5201#$Ultimate##0 ~n := #in~n; 5202#L20 assume ~n < 1;#res := 0; 5197#fibo2FINAL assume true; 5498#fibo2EXIT >#54#return; 5495#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5493#fibo1FINAL assume true; 5421#fibo1EXIT >#48#return; 5398#L25-1 call #t~ret7 := fibo1(~n - 2);< 5405#$Ultimate##0 ~n := #in~n; 5503#L10 assume ~n < 1;#res := 0; 5501#fibo1FINAL assume true; 5487#fibo1EXIT >#50#return; 5444#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5485#fibo2FINAL assume true; 5483#fibo2EXIT >#52#return; 5417#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 [2023-11-19 07:41:37,181 INFO L750 eck$LassoCheckResult]: Loop: 5422#$Ultimate##0 ~n := #in~n; 5207#L20 assume !(~n < 1); 5415#L22 assume !(1 == ~n); 5222#L25 call #t~ret6 := fibo1(~n - 1);< 5437#$Ultimate##0 ~n := #in~n; 5432#L10 assume !(~n < 1); 5433#L12 assume !(1 == ~n); 5205#L15 call #t~ret4 := fibo2(~n - 1);< 5203#$Ultimate##0 ~n := #in~n; 5207#L20 assume !(~n < 1); 5415#L22 assume !(1 == ~n); 5222#L25 call #t~ret6 := fibo1(~n - 1);< 5437#$Ultimate##0 ~n := #in~n; 5432#L10 assume !(~n < 1); 5433#L12 assume !(1 == ~n); 5205#L15 call #t~ret4 := fibo2(~n - 1);< 5203#$Ultimate##0 ~n := #in~n; 5206#L20 assume !(~n < 1); 5486#L22 assume 1 == ~n;#res := 1; 5484#fibo2FINAL assume true; 5468#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#48#return; 5439#L25-1 call #t~ret7 := fibo1(~n - 2);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume !(~n < 1); 5481#L12 assume !(1 == ~n); 5447#L15 call #t~ret4 := fibo2(~n - 1);< 5459#$Ultimate##0 ~n := #in~n; 5458#L20 assume !(~n < 1); 5456#L22 assume !(1 == ~n); 5442#L25 call #t~ret6 := fibo1(~n - 1);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume !(~n < 1); 5481#L12 assume !(1 == ~n); 5447#L15 call #t~ret4 := fibo2(~n - 1);< 5459#$Ultimate##0 ~n := #in~n; 5458#L20 assume !(~n < 1); 5456#L22 assume 1 == ~n;#res := 1; 5457#fibo2FINAL assume true; 5467#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#48#return; 5439#L25-1 call #t~ret7 := fibo1(~n - 2);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume ~n < 1;#res := 0; 5476#fibo1FINAL assume true; 5489#fibo1EXIT >#50#return; 5443#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5506#fibo2FINAL assume true; 5463#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#50#return; 5443#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5506#fibo2FINAL assume true; 5463#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 [2023-11-19 07:41:37,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1560322136, now seen corresponding path program 1 times [2023-11-19 07:41:37,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:37,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119050124] [2023-11-19 07:41:37,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:37,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:41:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:41:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119050124] [2023-11-19 07:41:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119050124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678687572] [2023-11-19 07:41:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:37,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:37,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:37,594 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:37,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-19 07:41:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:41:37,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:41:37,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:41:38,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678687572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:38,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:38,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2023-11-19 07:41:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783779366] [2023-11-19 07:41:38,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:38,043 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:38,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-19 07:41:38,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:38,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825759367] [2023-11-19 07:41:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:41:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:41:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-19 07:41:38,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:38,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825759367] [2023-11-19 07:41:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825759367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419513663] [2023-11-19 07:41:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:38,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:38,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:38,469 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:38,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-19 07:41:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:38,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:38,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-19 07:41:38,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-19 07:41:39,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419513663] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:39,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:39,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-19 07:41:39,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064307399] [2023-11-19 07:41:39,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:39,185 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:41:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:39,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:41:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:41:39,186 INFO L87 Difference]: Start difference. First operand 381 states and 523 transitions. cyclomatic complexity: 149 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 10 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 07:41:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:39,486 INFO L93 Difference]: Finished difference Result 412 states and 577 transitions. [2023-11-19 07:41:39,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 412 states and 577 transitions. [2023-11-19 07:41:39,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:39,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 412 states to 412 states and 577 transitions. [2023-11-19 07:41:39,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2023-11-19 07:41:39,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2023-11-19 07:41:39,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 412 states and 577 transitions. [2023-11-19 07:41:39,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:39,501 INFO L218 hiAutomatonCegarLoop]: Abstraction has 412 states and 577 transitions. [2023-11-19 07:41:39,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states and 577 transitions. [2023-11-19 07:41:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 394. [2023-11-19 07:41:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 255 states have (on average 1.219607843137255) internal successors, (311), 286 states have internal predecessors, (311), 80 states have call successors, (83), 54 states have call predecessors, (83), 59 states have return successors, (145), 53 states have call predecessors, (145), 78 states have call successors, (145) [2023-11-19 07:41:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 539 transitions. [2023-11-19 07:41:39,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-19 07:41:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:41:39,521 INFO L428 stractBuchiCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-19 07:41:39,521 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:41:39,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 394 states and 539 transitions. [2023-11-19 07:41:39,525 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:39,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:39,526 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:39,528 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:39,528 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-19 07:41:39,528 INFO L748 eck$LassoCheckResult]: Stem: 7080#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7044#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 7045#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7082#$Ultimate##0 ~n := #in~n; 7145#L10 assume !(~n < 1); 7144#L12 assume !(1 == ~n); 7140#L15 call #t~ret4 := fibo2(~n - 1);< 7143#$Ultimate##0 ~n := #in~n; 7142#L20 assume !(~n < 1); 7141#L22 assume !(1 == ~n); 7136#L25 call #t~ret6 := fibo1(~n - 1);< 7139#$Ultimate##0 ~n := #in~n; 7138#L10 assume !(~n < 1); 7137#L12 assume !(1 == ~n); 7125#L15 call #t~ret4 := fibo2(~n - 1);< 7135#$Ultimate##0 ~n := #in~n; 7134#L20 assume !(~n < 1); 7131#L22 assume !(1 == ~n); 7055#L25 call #t~ret6 := fibo1(~n - 1);< 7126#$Ultimate##0 ~n := #in~n; 7108#L10 assume !(~n < 1); 7109#L12 assume !(1 == ~n); 7100#L15 call #t~ret4 := fibo2(~n - 1);< 7101#$Ultimate##0 ~n := #in~n; 7123#L20 assume !(~n < 1); 7124#L22 assume !(1 == ~n); 7057#L25 call #t~ret6 := fibo1(~n - 1);< 7126#$Ultimate##0 ~n := #in~n; 7132#L10 assume !(~n < 1); 7234#L12 assume 1 == ~n;#res := 1; 7232#fibo1FINAL assume true; 7230#fibo1EXIT >#48#return; 7042#L25-1 call #t~ret7 := fibo1(~n - 2);< 7215#$Ultimate##0 ~n := #in~n; 7339#L10 assume ~n < 1;#res := 0; 7340#fibo1FINAL assume true; 7039#fibo1EXIT >#50#return; 7043#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7346#fibo2FINAL assume true; 7266#fibo2EXIT >#52#return; 7223#L15-1 [2023-11-19 07:41:39,529 INFO L750 eck$LassoCheckResult]: Loop: 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7282#L20 assume !(~n < 1); 7222#L22 assume !(1 == ~n); 7228#L25 call #t~ret6 := fibo1(~n - 1);< 7221#$Ultimate##0 ~n := #in~n; 7303#L10 assume !(~n < 1); 7302#L12 assume !(1 == ~n); 7226#L15 call #t~ret4 := fibo2(~n - 1);< 7277#$Ultimate##0 ~n := #in~n; 7282#L20 assume !(~n < 1); 7222#L22 assume !(1 == ~n); 7228#L25 call #t~ret6 := fibo1(~n - 1);< 7221#$Ultimate##0 ~n := #in~n; 7303#L10 assume !(~n < 1); 7302#L12 assume !(1 == ~n); 7226#L15 call #t~ret4 := fibo2(~n - 1);< 7277#$Ultimate##0 ~n := #in~n; 7322#L20 assume !(~n < 1); 7321#L22 assume 1 == ~n;#res := 1; 7320#fibo2FINAL assume true; 7279#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#48#return; 7255#L25-1 call #t~ret7 := fibo1(~n - 2);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume !(1 == ~n); 7262#L15 call #t~ret4 := fibo2(~n - 1);< 7275#$Ultimate##0 ~n := #in~n; 7327#L20 assume !(~n < 1); 7325#L22 assume !(1 == ~n); 7256#L25 call #t~ret6 := fibo1(~n - 1);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume !(1 == ~n); 7262#L15 call #t~ret4 := fibo2(~n - 1);< 7275#$Ultimate##0 ~n := #in~n; 7327#L20 assume !(~n < 1); 7325#L22 assume 1 == ~n;#res := 1; 7323#fibo2FINAL assume true; 7281#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#48#return; 7255#L25-1 call #t~ret7 := fibo1(~n - 2);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume 1 == ~n;#res := 1; 7296#fibo1FINAL assume true; 7284#fibo1EXIT >#50#return; 7258#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7273#fibo2FINAL assume true; 7269#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#50#return; 7258#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7273#fibo2FINAL assume true; 7269#fibo2EXIT >#52#return; 7223#L15-1 [2023-11-19 07:41:39,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1100171425, now seen corresponding path program 1 times [2023-11-19 07:41:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:39,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693296741] [2023-11-19 07:41:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 07:41:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:41:39,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:39,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693296741] [2023-11-19 07:41:39,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693296741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:39,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494572389] [2023-11-19 07:41:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:39,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:39,750 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:39,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-19 07:41:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:39,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:41:39,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:41:39,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:41:40,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494572389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:40,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:40,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 21 [2023-11-19 07:41:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648639796] [2023-11-19 07:41:40,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:40,198 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:40,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2083907171, now seen corresponding path program 1 times [2023-11-19 07:41:40,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:40,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541185299] [2023-11-19 07:41:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:40,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:41:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:41:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-19 07:41:40,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:40,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541185299] [2023-11-19 07:41:40,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541185299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:40,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887243068] [2023-11-19 07:41:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:40,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:40,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:40,527 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:40,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-19 07:41:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:40,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-19 07:41:40,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-19 07:41:41,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887243068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:41,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:41,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-19 07:41:41,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411912358] [2023-11-19 07:41:41,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:41,200 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:41:41,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 07:41:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:41:41,202 INFO L87 Difference]: Start difference. First operand 394 states and 539 transitions. cyclomatic complexity: 152 Second operand has 22 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 10 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:41:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:41,668 INFO L93 Difference]: Finished difference Result 445 states and 553 transitions. [2023-11-19 07:41:41,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 445 states and 553 transitions. [2023-11-19 07:41:41,675 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2023-11-19 07:41:41,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 445 states to 299 states and 359 transitions. [2023-11-19 07:41:41,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2023-11-19 07:41:41,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 162 [2023-11-19 07:41:41,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 359 transitions. [2023-11-19 07:41:41,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:41,681 INFO L218 hiAutomatonCegarLoop]: Abstraction has 299 states and 359 transitions. [2023-11-19 07:41:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 359 transitions. [2023-11-19 07:41:41,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 277. [2023-11-19 07:41:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 199 states have internal predecessors, (211), 59 states have call successors, (60), 42 states have call predecessors, (60), 37 states have return successors, (61), 35 states have call predecessors, (61), 44 states have call successors, (61) [2023-11-19 07:41:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 332 transitions. [2023-11-19 07:41:41,695 INFO L240 hiAutomatonCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-19 07:41:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:41:41,696 INFO L428 stractBuchiCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-19 07:41:41,696 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:41:41,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 332 transitions. [2023-11-19 07:41:41,699 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 62 [2023-11-19 07:41:41,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:41,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:41,701 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:41,701 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:41,704 INFO L748 eck$LassoCheckResult]: Stem: 8909#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8879#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 8880#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8916#$Ultimate##0 ~n := #in~n; 8974#L10 assume !(~n < 1); 8973#L12 assume !(1 == ~n); 8969#L15 call #t~ret4 := fibo2(~n - 1);< 8972#$Ultimate##0 ~n := #in~n; 8971#L20 assume !(~n < 1); 8970#L22 assume !(1 == ~n); 8965#L25 call #t~ret6 := fibo1(~n - 1);< 8968#$Ultimate##0 ~n := #in~n; 8967#L10 assume !(~n < 1); 8966#L12 assume !(1 == ~n); 8941#L15 call #t~ret4 := fibo2(~n - 1);< 8964#$Ultimate##0 ~n := #in~n; 8963#L20 assume !(~n < 1); 8959#L22 assume !(1 == ~n); 8893#L25 call #t~ret6 := fibo1(~n - 1);< 8942#$Ultimate##0 ~n := #in~n; 8961#L10 assume !(~n < 1); 8984#L12 assume !(1 == ~n); 8985#L15 call #t~ret4 := fibo2(~n - 1);< 9026#$Ultimate##0 ~n := #in~n; 9035#L20 assume !(~n < 1); 9033#L22 assume 1 == ~n;#res := 1; 9031#fibo2FINAL assume true; 9025#fibo2EXIT >#52#return; 8890#L15-1 call #t~ret5 := fibo2(~n - 2);< 8894#$Ultimate##0 ~n := #in~n; 8989#L20 assume ~n < 1;#res := 0; 8988#fibo2FINAL assume true; 8987#fibo2EXIT >#54#return; 8986#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8983#fibo1FINAL assume true; 8981#fibo1EXIT >#48#return; 8955#L25-1 call #t~ret7 := fibo1(~n - 2);< 8979#$Ultimate##0 ~n := #in~n; 8976#L10 assume !(~n < 1); 8977#L12 assume !(1 == ~n); 8886#L15 call #t~ret4 := fibo2(~n - 1);< 8957#$Ultimate##0 ~n := #in~n; 8949#L20 assume !(~n < 1); 8946#L22 assume 1 == ~n;#res := 1; 8947#fibo2FINAL assume true; 9053#fibo2EXIT >#52#return; 8846#L15-1 [2023-11-19 07:41:41,704 INFO L750 eck$LassoCheckResult]: Loop: 8846#L15-1 call #t~ret5 := fibo2(~n - 2);< 8978#$Ultimate##0 ~n := #in~n; 8907#L20 assume !(~n < 1); 8839#L22 assume !(1 == ~n); 8847#L25 call #t~ret6 := fibo1(~n - 1);< 9059#$Ultimate##0 ~n := #in~n; 9068#L10 assume !(~n < 1); 9067#L12 assume !(1 == ~n); 8841#L15 call #t~ret4 := fibo2(~n - 1);< 9020#$Ultimate##0 ~n := #in~n; 9039#L20 assume !(~n < 1); 9037#L22 assume 1 == ~n;#res := 1; 9036#fibo2FINAL assume true; 9018#fibo2EXIT >#52#return; 8846#L15-1 [2023-11-19 07:41:41,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -663651953, now seen corresponding path program 1 times [2023-11-19 07:41:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337874394] [2023-11-19 07:41:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:41:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:41:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 07:41:41,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:41,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337874394] [2023-11-19 07:41:41,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337874394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:41,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291466692] [2023-11-19 07:41:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:41,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:41,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:41,918 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:41,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-19 07:41:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:41:41,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:41:42,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:41:42,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291466692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:42,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2023-11-19 07:41:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551229456] [2023-11-19 07:41:42,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:42,220 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:42,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:42,221 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-19 07:41:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8991588] [2023-11-19 07:41:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:42,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:42,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:42,438 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:42,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:42,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:42,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:42,439 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:42,439 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:42,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:42,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration7_Loop [2023-11-19 07:41:42,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:42,439 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:42,440 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 07:41:42,444 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 07:41:42,451 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 07:41:42,454 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 07:41:42,457 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 07:41:42,460 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 07:41:42,463 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 07:41:42,466 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 07:41:42,468 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 07:41:42,526 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:42,526 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:42,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:42,531 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:42,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:42,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:42,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-19 07:41:42,562 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:42,562 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:41:42,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:42,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:42,582 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:42,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:42,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:42,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-19 07:41:42,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:42,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:42,627 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:42,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:42,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:42,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-19 07:41:42,670 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:42,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:42,689 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:42,689 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:42,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:42,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:42,689 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:42,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:42,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:42,689 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration7_Loop [2023-11-19 07:41:42,689 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:42,689 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:42,690 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 07:41:42,693 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 07:41:42,696 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 07:41:42,701 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 07:41:42,703 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 07:41:42,711 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 07:41:42,716 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 07:41:42,718 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 07:41:42,720 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 07:41:42,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:42,774 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:42,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:42,775 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:42,783 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 07:41:42,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-19 07:41:42,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:42,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:42,794 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:42,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:42,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:42,795 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:42,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:42,796 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:42,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2023-11-19 07:41:42,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:42,810 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:42,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-19 07:41:42,812 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 07:41:42,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:42,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:42,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:42,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:42,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:42,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:42,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:42,825 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:42,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2023-11-19 07:41:42,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:42,837 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:42,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-19 07:41:42,839 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 07:41:42,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:42,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:42,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:42,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:42,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:42,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:42,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:42,852 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:42,855 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:42,855 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:42,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:42,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:42,858 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:42,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-19 07:41:42,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:42,859 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:42,859 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:42,859 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-19 07:41:42,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2023-11-19 07:41:42,875 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:42,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:42,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:42,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:43,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:43,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:43,352 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 07:41:43,352 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 07:41:43,353 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:41:43,724 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1005 states and 1188 transitions. Complement of second has 40 states. [2023-11-19 07:41:43,724 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 07:41:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:41:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 61 transitions. [2023-11-19 07:41:43,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 61 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-19 07:41:43,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:43,726 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:43,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:43,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:43,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:44,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:44,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:44,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2023-11-19 07:41:44,238 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 07:41:44,239 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-19 07:41:44,240 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:41:44,524 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 621 states and 723 transitions. Complement of second has 26 states. [2023-11-19 07:41:44,525 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 07:41:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:41:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2023-11-19 07:41:44,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-19 07:41:44,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:44,527 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:44,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:44,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:44,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:44,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:44,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:44,984 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 07:41:44,985 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-19 07:41:44,985 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:41:45,396 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1402 states and 1651 transitions. Complement of second has 102 states. [2023-11-19 07:41:45,397 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 07:41:45,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:41:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 71 transitions. [2023-11-19 07:41:45,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-19 07:41:45,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:45,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 60 letters. Loop has 14 letters. [2023-11-19 07:41:45,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:45,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 28 letters. [2023-11-19 07:41:45,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:45,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1402 states and 1651 transitions. [2023-11-19 07:41:45,420 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 186 [2023-11-19 07:41:45,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1402 states to 782 states and 926 transitions. [2023-11-19 07:41:45,432 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 334 [2023-11-19 07:41:45,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 358 [2023-11-19 07:41:45,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 782 states and 926 transitions. [2023-11-19 07:41:45,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:45,433 INFO L218 hiAutomatonCegarLoop]: Abstraction has 782 states and 926 transitions. [2023-11-19 07:41:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states and 926 transitions. [2023-11-19 07:41:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 640. [2023-11-19 07:41:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 419 states have (on average 1.1479713603818615) internal successors, (481), 464 states have internal predecessors, (481), 126 states have call successors, (134), 95 states have call predecessors, (134), 95 states have return successors, (133), 80 states have call predecessors, (133), 99 states have call successors, (133) [2023-11-19 07:41:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 748 transitions. [2023-11-19 07:41:45,456 INFO L240 hiAutomatonCegarLoop]: Abstraction has 640 states and 748 transitions. [2023-11-19 07:41:45,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:41:45,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:41:45,457 INFO L87 Difference]: Start difference. First operand 640 states and 748 transitions. Second operand has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 07:41:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:45,731 INFO L93 Difference]: Finished difference Result 431 states and 477 transitions. [2023-11-19 07:41:45,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 477 transitions. [2023-11-19 07:41:45,736 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-19 07:41:45,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 270 states and 303 transitions. [2023-11-19 07:41:45,740 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2023-11-19 07:41:45,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2023-11-19 07:41:45,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 303 transitions. [2023-11-19 07:41:45,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:45,741 INFO L218 hiAutomatonCegarLoop]: Abstraction has 270 states and 303 transitions. [2023-11-19 07:41:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 303 transitions. [2023-11-19 07:41:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2023-11-19 07:41:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 173 states have (on average 1.0982658959537572) internal successors, (190), 186 states have internal predecessors, (190), 48 states have call successors, (52), 38 states have call predecessors, (52), 40 states have return successors, (51), 36 states have call predecessors, (51), 40 states have call successors, (51) [2023-11-19 07:41:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 293 transitions. [2023-11-19 07:41:45,750 INFO L240 hiAutomatonCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-19 07:41:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:41:45,752 INFO L428 stractBuchiCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-19 07:41:45,752 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:41:45,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 261 states and 293 transitions. [2023-11-19 07:41:45,754 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-19 07:41:45,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:45,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:45,758 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:45,759 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:45,759 INFO L748 eck$LassoCheckResult]: Stem: 14398#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 14371#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 14372#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 14403#$Ultimate##0 ~n := #in~n; 14492#L10 assume !(~n < 1); 14491#L12 assume !(1 == ~n); 14487#L15 call #t~ret4 := fibo2(~n - 1);< 14490#$Ultimate##0 ~n := #in~n; 14489#L20 assume !(~n < 1); 14488#L22 assume !(1 == ~n); 14483#L25 call #t~ret6 := fibo1(~n - 1);< 14486#$Ultimate##0 ~n := #in~n; 14485#L10 assume !(~n < 1); 14484#L12 assume !(1 == ~n); 14479#L15 call #t~ret4 := fibo2(~n - 1);< 14482#$Ultimate##0 ~n := #in~n; 14481#L20 assume !(~n < 1); 14480#L22 assume !(1 == ~n); 14470#L25 call #t~ret6 := fibo1(~n - 1);< 14478#$Ultimate##0 ~n := #in~n; 14476#L10 assume !(~n < 1); 14474#L12 assume !(1 == ~n); 14466#L15 call #t~ret4 := fibo2(~n - 1);< 14471#$Ultimate##0 ~n := #in~n; 14477#L20 assume !(~n < 1); 14475#L22 assume 1 == ~n;#res := 1; 14473#fibo2FINAL assume true; 14465#fibo2EXIT >#52#return; 14467#L15-1 call #t~ret5 := fibo2(~n - 2);< 14546#$Ultimate##0 ~n := #in~n; 14548#L20 assume ~n < 1;#res := 0; 14547#fibo2FINAL assume true; 14545#fibo2EXIT >#54#return; 14544#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14542#fibo1FINAL assume true; 14540#fibo1EXIT >#48#return; 14537#L25-1 call #t~ret7 := fibo1(~n - 2);< 14538#$Ultimate##0 ~n := #in~n; 14543#L10 assume !(~n < 1); 14541#L12 assume 1 == ~n;#res := 1; 14539#fibo1FINAL assume true; 14536#fibo1EXIT >#50#return; 14535#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 14534#fibo2FINAL assume true; 14533#fibo2EXIT >#52#return; 14360#L15-1 call #t~ret5 := fibo2(~n - 2);< 14443#$Ultimate##0 ~n := #in~n; 14564#L20 assume !(~n < 1); 14563#L22 assume 1 == ~n;#res := 1; 14562#fibo2FINAL assume true; 14532#fibo2EXIT >#54#return; 14531#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14530#fibo1FINAL assume true; 14529#fibo1EXIT >#48#return; 14518#L25-1 call #t~ret7 := fibo1(~n - 2);< 14523#$Ultimate##0 ~n := #in~n; 14521#L10 assume !(~n < 1); 14517#L12 assume !(1 == ~n); 14356#L15 call #t~ret4 := fibo2(~n - 1);< 14397#$Ultimate##0 [2023-11-19 07:41:45,759 INFO L750 eck$LassoCheckResult]: Loop: 14397#$Ultimate##0 ~n := #in~n; 14524#L20 assume !(~n < 1); 14556#L22 assume !(1 == ~n); 14396#L25 call #t~ret6 := fibo1(~n - 1);< 14555#$Ultimate##0 ~n := #in~n; 14554#L10 assume !(~n < 1); 14550#L12 assume !(1 == ~n); 14357#L15 call #t~ret4 := fibo2(~n - 1);< 14397#$Ultimate##0 [2023-11-19 07:41:45,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:45,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2006509536, now seen corresponding path program 1 times [2023-11-19 07:41:45,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:45,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024995274] [2023-11-19 07:41:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:45,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:45,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:41:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:46,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:46,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024995274] [2023-11-19 07:41:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024995274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:46,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510228073] [2023-11-19 07:41:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:46,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:46,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,119 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-19 07:41:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:46,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 07:41:46,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 07:41:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510228073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:46,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:46,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 21 [2023-11-19 07:41:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139570670] [2023-11-19 07:41:46,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:46,560 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:46,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-19 07:41:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723891578] [2023-11-19 07:41:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:46,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:46,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:46,680 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:46,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:46,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:46,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:46,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:46,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:46,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:46,680 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration8_Loop [2023-11-19 07:41:46,680 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:46,680 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:46,681 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 07:41:46,684 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 07:41:46,686 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 07:41:46,689 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 07:41:46,691 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 07:41:46,700 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 07:41:46,702 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 07:41:46,704 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 07:41:46,744 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:46,744 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:46,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,750 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:46,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:46,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-19 07:41:46,776 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:46,777 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 07:41:46,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2023-11-19 07:41:46,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,792 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-19 07:41:46,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:46,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:46,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:46,805 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 07:41:46,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:46,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,822 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-19 07:41:46,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:46,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:46,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:46,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:41:46,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2023-11-19 07:41:46,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,850 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-19 07:41:46,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:46,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:46,863 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:46,863 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 07:41:46,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:46,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,878 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-19 07:41:46,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:46,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:46,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-11-19 07:41:46,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,908 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-19 07:41:46,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:46,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:46,982 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:46,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-19 07:41:46,985 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:46,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:46,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:46,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:46,985 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:46,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:46,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:46,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:46,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration8_Loop [2023-11-19 07:41:46,986 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:46,986 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:46,986 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 07:41:46,994 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 07:41:46,996 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 07:41:46,999 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 07:41:47,001 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 07:41:47,009 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 07:41:47,011 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 07:41:47,013 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 07:41:47,049 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:47,049 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:47,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:47,051 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:47,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-19 07:41:47,053 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 07:41:47,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:47,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:47,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:47,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:47,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:47,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:47,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:47,081 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:47,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-19 07:41:47,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:47,093 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:47,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-19 07:41:47,095 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 07:41:47,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:47,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:47,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:47,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:47,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:47,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:47,106 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:47,107 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:47,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:47,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:47,119 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:47,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-19 07:41:47,121 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:41:47,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:47,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:47,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:47,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:47,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:47,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:47,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:47,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:47,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:47,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:47,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:47,170 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:47,174 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 07:41:47,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:47,187 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:47,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:47,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:47,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:47,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:47,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:47,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-19 07:41:47,202 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:47,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:47,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:47,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:47,221 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:47,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2023-11-19 07:41:47,224 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 07:41:47,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:47,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:47,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:47,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:47,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:47,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:47,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:47,239 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:47,241 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:47,241 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:47,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:47,242 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:47,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2023-11-19 07:41:47,244 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:47,244 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:47,244 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:47,244 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-19 07:41:47,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:47,259 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:47,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:47,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:47,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:47,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:47,890 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 07:41:47,890 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-19 07:41:47,891 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 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 07:41:47,998 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 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 279 states and 311 transitions. Complement of second has 15 states. [2023-11-19 07:41:47,999 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 07:41:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 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 07:41:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-19 07:41:48,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-19 07:41:48,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:48,001 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:48,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:48,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:48,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:48,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:48,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:48,608 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 07:41:48,609 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-19 07:41:48,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 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 07:41:48,746 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 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 279 states and 311 transitions. Complement of second has 15 states. [2023-11-19 07:41:48,748 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 07:41:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 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 07:41:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-19 07:41:48,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-19 07:41:48,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:48,753 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:48,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:48,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:48,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:49,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:41:49,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:49,436 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 07:41:49,437 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 07:41:49,437 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 07:41:49,656 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 402 states and 443 transitions. Complement of second has 31 states. [2023-11-19 07:41:49,657 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 07:41:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 07:41:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 41 transitions. [2023-11-19 07:41:49,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 41 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-19 07:41:49,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:49,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 41 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-19 07:41:49,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:49,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 41 transitions. Stem has 59 letters. Loop has 16 letters. [2023-11-19 07:41:49,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:49,659 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 402 states and 443 transitions. [2023-11-19 07:41:49,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-19 07:41:49,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 402 states to 283 states and 314 transitions. [2023-11-19 07:41:49,669 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 156 [2023-11-19 07:41:49,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 175 [2023-11-19 07:41:49,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 283 states and 314 transitions. [2023-11-19 07:41:49,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:49,670 INFO L218 hiAutomatonCegarLoop]: Abstraction has 283 states and 314 transitions. [2023-11-19 07:41:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states and 314 transitions. [2023-11-19 07:41:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 266. [2023-11-19 07:41:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 179 states have (on average 1.094972067039106) internal successors, (196), 191 states have internal predecessors, (196), 48 states have call successors, (52), 39 states have call predecessors, (52), 39 states have return successors, (48), 35 states have call predecessors, (48), 39 states have call successors, (48) [2023-11-19 07:41:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2023-11-19 07:41:49,679 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 296 transitions. [2023-11-19 07:41:49,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 07:41:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:41:49,681 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 21 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 11 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-19 07:41:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:50,092 INFO L93 Difference]: Finished difference Result 315 states and 364 transitions. [2023-11-19 07:41:50,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 364 transitions. [2023-11-19 07:41:50,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-19 07:41:50,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 289 states and 332 transitions. [2023-11-19 07:41:50,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2023-11-19 07:41:50,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 168 [2023-11-19 07:41:50,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 289 states and 332 transitions. [2023-11-19 07:41:50,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:50,101 INFO L218 hiAutomatonCegarLoop]: Abstraction has 289 states and 332 transitions. [2023-11-19 07:41:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states and 332 transitions. [2023-11-19 07:41:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 264. [2023-11-19 07:41:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 176 states have (on average 1.0965909090909092) internal successors, (193), 188 states have internal predecessors, (193), 50 states have call successors, (53), 39 states have call predecessors, (53), 38 states have return successors, (53), 36 states have call predecessors, (53), 38 states have call successors, (53) [2023-11-19 07:41:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 299 transitions. [2023-11-19 07:41:50,111 INFO L240 hiAutomatonCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-19 07:41:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 07:41:50,112 INFO L428 stractBuchiCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-19 07:41:50,112 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-19 07:41:50,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 299 transitions. [2023-11-19 07:41:50,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-19 07:41:50,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:50,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:50,116 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:50,116 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:50,116 INFO L748 eck$LassoCheckResult]: Stem: 17419#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17384#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 17385#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17423#$Ultimate##0 ~n := #in~n; 17517#L10 assume !(~n < 1); 17515#L12 assume !(1 == ~n); 17512#L15 call #t~ret4 := fibo2(~n - 1);< 17513#$Ultimate##0 ~n := #in~n; 17525#L20 assume !(~n < 1); 17523#L22 assume !(1 == ~n); 17520#L25 call #t~ret6 := fibo1(~n - 1);< 17521#$Ultimate##0 ~n := #in~n; 17533#L10 assume !(~n < 1); 17531#L12 assume !(1 == ~n); 17528#L15 call #t~ret4 := fibo2(~n - 1);< 17529#$Ultimate##0 ~n := #in~n; 17543#L20 assume !(~n < 1); 17540#L22 assume !(1 == ~n); 17413#L25 call #t~ret6 := fibo1(~n - 1);< 17539#$Ultimate##0 ~n := #in~n; 17558#L10 assume !(~n < 1); 17491#L12 assume !(1 == ~n); 17412#L15 call #t~ret4 := fibo2(~n - 1);< 17414#$Ultimate##0 ~n := #in~n; 17554#L20 assume !(~n < 1); 17553#L22 assume 1 == ~n;#res := 1; 17552#fibo2FINAL assume true; 17551#fibo2EXIT >#52#return; 17547#L15-1 call #t~ret5 := fibo2(~n - 2);< 17548#$Ultimate##0 ~n := #in~n; 17550#L20 assume ~n < 1;#res := 0; 17549#fibo2FINAL assume true; 17546#fibo2EXIT >#54#return; 17545#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17542#fibo1FINAL assume true; 17538#fibo1EXIT >#48#return; 17535#L25-1 call #t~ret7 := fibo1(~n - 2);< 17536#$Ultimate##0 ~n := #in~n; 17544#L10 assume !(~n < 1); 17541#L12 assume 1 == ~n;#res := 1; 17537#fibo1FINAL assume true; 17534#fibo1EXIT >#50#return; 17532#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17530#fibo2FINAL assume true; 17527#fibo2EXIT >#52#return; 17370#L15-1 call #t~ret5 := fibo2(~n - 2);< 17502#$Ultimate##0 ~n := #in~n; 17503#L20 assume !(~n < 1); 17594#L22 assume !(1 == ~n); 17393#L25 call #t~ret6 := fibo1(~n - 1);< 17592#$Ultimate##0 ~n := #in~n; 17609#L10 assume !(~n < 1); 17607#L12 assume !(1 == ~n); 17401#L15 call #t~ret4 := fibo2(~n - 1);< 17416#$Ultimate##0 ~n := #in~n; 17488#L20 assume !(~n < 1); 17489#L22 assume !(1 == ~n); 17388#L25 call #t~ret6 := fibo1(~n - 1);< 17387#$Ultimate##0 ~n := #in~n; 17389#L10 assume !(~n < 1); 17485#L12 assume !(1 == ~n); 17482#L15 [2023-11-19 07:41:50,116 INFO L750 eck$LassoCheckResult]: Loop: 17482#L15 call #t~ret4 := fibo2(~n - 1);< 17483#$Ultimate##0 ~n := #in~n; 17488#L20 assume !(~n < 1); 17489#L22 assume !(1 == ~n); 17388#L25 call #t~ret6 := fibo1(~n - 1);< 17387#$Ultimate##0 ~n := #in~n; 17389#L10 assume !(~n < 1); 17485#L12 assume !(1 == ~n); 17482#L15 [2023-11-19 07:41:50,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1632318521, now seen corresponding path program 2 times [2023-11-19 07:41:50,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:50,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185379304] [2023-11-19 07:41:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:50,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:41:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:50,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:50,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:50,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:41:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:50,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185379304] [2023-11-19 07:41:50,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185379304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:50,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888097936] [2023-11-19 07:41:50,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:41:50,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:50,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:50,315 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:50,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-11-19 07:41:50,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:41:50,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:41:50,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:41:50,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:41:50,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:41:50,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888097936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:50,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:50,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 16 [2023-11-19 07:41:50,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855682697] [2023-11-19 07:41:50,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:50,622 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:50,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2023-11-19 07:41:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355659976] [2023-11-19 07:41:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:50,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:50,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:50,779 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:50,779 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:50,779 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:50,779 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:50,779 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:50,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:50,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:50,780 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:50,781 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration9_Loop [2023-11-19 07:41:50,781 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:50,781 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:50,782 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 07:41:50,785 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 07:41:50,789 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 07:41:50,791 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 07:41:50,793 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 07:41:50,794 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 07:41:50,796 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 07:41:50,798 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 07:41:50,856 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:50,856 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:50,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:50,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:50,858 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:50,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-19 07:41:50,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:50,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:50,871 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:50,871 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 07:41:50,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2023-11-19 07:41:50,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:50,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:50,886 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:50,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-19 07:41:50,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:50,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:50,899 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:50,899 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 07:41:50,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:50,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:50,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:50,916 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:50,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-19 07:41:50,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:50,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:50,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:50,928 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 07:41:50,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2023-11-19 07:41:50,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:50,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:50,944 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:50,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-19 07:41:50,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:50,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:50,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:50,957 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 07:41:50,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:50,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:50,974 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:50,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-19 07:41:50,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:50,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:50,988 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:50,988 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 07:41:51,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2023-11-19 07:41:51,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:51,001 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:51,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-19 07:41:51,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:51,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:51,014 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:51,014 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 07:41:51,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2023-11-19 07:41:51,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:51,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:51,028 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:51,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-19 07:41:51,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:51,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:51,041 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:51,041 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 07:41:51,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2023-11-19 07:41:51,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:51,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:51,056 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:51,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-19 07:41:51,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:51,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:51,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2023-11-19 07:41:51,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:51,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:51,089 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:51,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2023-11-19 07:41:51,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:51,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:53,231 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:53,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:53,234 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:53,234 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:53,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:53,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:53,235 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:53,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:53,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:53,235 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration9_Loop [2023-11-19 07:41:53,235 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:53,235 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:53,236 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 07:41:53,239 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 07:41:53,240 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 07:41:53,250 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 07:41:53,253 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 07:41:53,255 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 07:41:53,257 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 07:41:53,259 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 07:41:53,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:53,340 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:53,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,341 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,345 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 07:41:53,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2023-11-19 07:41:53,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,356 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:53,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:53,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,375 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2023-11-19 07:41:53,377 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 07:41:53,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,390 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:53,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2023-11-19 07:41:53,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,404 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2023-11-19 07:41:53,406 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 07:41:53,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,450 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:53,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2023-11-19 07:41:53,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,466 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2023-11-19 07:41:53,469 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 07:41:53,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,482 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:53,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2023-11-19 07:41:53,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,495 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2023-11-19 07:41:53,496 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 07:41:53,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,508 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:53,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:53,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,521 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2023-11-19 07:41:53,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:41:53,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:53,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2023-11-19 07:41:53,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,548 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2023-11-19 07:41:53,549 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 07:41:53,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,561 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:53,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:53,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,575 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2023-11-19 07:41:53,576 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 07:41:53,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:53,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:53,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:53,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:53,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:53,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:53,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:53,590 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:53,592 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:41:53,592 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:41:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:53,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:53,593 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:53,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2023-11-19 07:41:53,602 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:53,602 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:53,602 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:53,602 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-19 07:41:53,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2023-11-19 07:41:53,619 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:53,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:53,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:53,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:41:53,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:54,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:54,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:54,142 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 07:41:54,143 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 07:41:54,143 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 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 07:41:54,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. 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 288 states and 323 transitions. Complement of second has 19 states. [2023-11-19 07:41:54,258 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 07:41:54,258 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 07:41:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2023-11-19 07:41:54,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-19 07:41:54,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:54,259 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:54,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:54,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:41:54,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:54,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:54,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:54,744 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 07:41:54,745 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 07:41:54,745 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 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 07:41:54,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. 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 288 states and 323 transitions. Complement of second has 21 states. [2023-11-19 07:41:54,894 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 07:41:54,894 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 07:41:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2023-11-19 07:41:54,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-19 07:41:54,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:54,895 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:54,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:54,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:41:54,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:55,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:55,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:55,476 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 07:41:55,477 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 07:41:55,477 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 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 07:41:55,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. 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 573 states and 653 transitions. Complement of second has 33 states. [2023-11-19 07:41:55,630 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 07:41:55,631 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 07:41:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-19 07:41:55,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-19 07:41:55,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:55,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-19 07:41:55,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:55,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 16 letters. [2023-11-19 07:41:55,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:55,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 573 states and 653 transitions. [2023-11-19 07:41:55,639 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:41:55,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 573 states to 0 states and 0 transitions. [2023-11-19 07:41:55,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:41:55,640 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:41:55,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:41:55,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:55,640 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:55,640 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:41:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:41:55,641 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 10 states have internal predecessors, (40), 8 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:55,641 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-19 07:41:55,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-19 07:41:55,642 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:41:55,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:41:55,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:41:55,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:41:55,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:41:55,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:55,642 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:55,643 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:41:55,643 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:55,643 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-19 07:41:55,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:41:55,644 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:41:55,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:41:55,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:41:55 BoogieIcfgContainer [2023-11-19 07:41:55,652 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:41:55,652 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:41:55,652 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:41:55,653 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:41:55,653 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:26" (3/4) ... [2023-11-19 07:41:55,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:41:55,656 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:41:55,658 INFO L158 Benchmark]: Toolchain (without parser) took 29625.27ms. Allocated memory was 165.7MB in the beginning and 287.3MB in the end (delta: 121.6MB). Free memory was 132.1MB in the beginning and 219.8MB in the end (delta: -87.7MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-19 07:41:55,658 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 117.4MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:55,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.49ms. Allocated memory is still 165.7MB. Free memory was 131.4MB in the beginning and 121.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:41:55,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.29ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 120.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:55,659 INFO L158 Benchmark]: Boogie Preprocessor took 21.40ms. Allocated memory is still 165.7MB. Free memory was 120.2MB in the beginning and 118.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:55,659 INFO L158 Benchmark]: RCFGBuilder took 431.02ms. Allocated memory is still 165.7MB. Free memory was 118.8MB in the beginning and 131.9MB in the end (delta: -13.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:41:55,660 INFO L158 Benchmark]: BuchiAutomizer took 28841.95ms. Allocated memory was 165.7MB in the beginning and 287.3MB in the end (delta: 121.6MB). Free memory was 131.4MB in the beginning and 220.9MB in the end (delta: -89.4MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2023-11-19 07:41:55,660 INFO L158 Benchmark]: Witness Printer took 4.11ms. Allocated memory is still 287.3MB. Free memory was 220.9MB in the beginning and 219.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:55,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 117.4MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.49ms. Allocated memory is still 165.7MB. Free memory was 131.4MB in the beginning and 121.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.29ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 120.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.40ms. Allocated memory is still 165.7MB. Free memory was 120.2MB in the beginning and 118.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.02ms. Allocated memory is still 165.7MB. Free memory was 118.8MB in the beginning and 131.9MB in the end (delta: -13.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 28841.95ms. Allocated memory was 165.7MB in the beginning and 287.3MB in the end (delta: 121.6MB). Free memory was 131.4MB in the beginning and 220.9MB in the end (delta: -89.4MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. * Witness Printer took 4.11ms. Allocated memory is still 287.3MB. Free memory was 220.9MB in the beginning and 219.8MB 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 14 terminating modules (8 trivial, 2 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 9 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 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 28.7s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 15.3s. Construction of modules took 2.3s. Büchi inclusion checks took 10.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 12. Automata minimization 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 404 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1150 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1114 mSDsluCounter, 1801 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1339 mSDsCounter, 605 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3060 IncrementalHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 605 mSolverCounterUnsat, 462 mSDtfsCounter, 3060 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf93 smp66 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 30 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.4s 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 07:41:55,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:55,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:56,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:56,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-19 07:41:56,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-19 07:41:56,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-19 07:41:56,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-19 07:41:57,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-19 07:41:57,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-19 07:41:57,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c06320e-d7fc-4e49-b137-f6a7f24c2b2e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE