./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/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_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/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_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:59,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:59,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:40:59,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:59,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:59,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:59,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:59,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:59,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:59,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:59,194 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:59,194 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:40:59,195 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:40:59,196 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:40:59,196 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:40:59,197 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:40:59,198 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:40:59,198 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:59,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:40:59,199 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:59,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:59,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:59,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:59,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:40:59,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:40:59,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:40:59,204 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:59,205 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:59,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:59,206 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:40:59,207 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:59,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:59,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:59,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:59,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:59,210 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:40:59,210 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_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2023-11-19 07:40:59,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:59,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:59,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:59,578 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:59,579 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:59,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2023-11-19 07:41:02,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:03,202 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:03,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2023-11-19 07:41:03,213 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/data/c95f2cf84/93f397e44ff24ca8b666d5d2ed91b687/FLAGd34e3ca8c [2023-11-19 07:41:03,230 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/data/c95f2cf84/93f397e44ff24ca8b666d5d2ed91b687 [2023-11-19 07:41:03,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:03,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:03,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:03,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:03,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:03,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b61569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03, skipping insertion in model container [2023-11-19 07:41:03,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,269 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:03,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:03,460 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:03,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:03,492 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:03,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03 WrapperNode [2023-11-19 07:41:03,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:03,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:03,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:03,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:03,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,524 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-19 07:41:03,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:03,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:03,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:03,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:03,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:03,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:03,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:03,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:03,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:03,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:03,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:03,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-19 07:41:03,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-19 07:41:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-19 07:41:03,648 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-19 07:41:03,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:03,744 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:03,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:03,961 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:03,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:03,971 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:03,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:03 BoogieIcfgContainer [2023-11-19 07:41:03,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:03,977 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:41:03,978 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:41:03,984 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:41:03,985 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:41:03,985 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:41:03" (1/3) ... [2023-11-19 07:41:03,987 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3dc8aa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:41:03, skipping insertion in model container [2023-11-19 07:41:03,987 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:41:03,987 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (2/3) ... [2023-11-19 07:41:03,988 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3dc8aa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:41:03, skipping insertion in model container [2023-11-19 07:41:03,988 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:41:03,988 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:03" (3/3) ... [2023-11-19 07:41:03,990 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2023-11-19 07:41:04,063 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:41:04,064 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:41:04,064 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:41:04,064 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:41:04,065 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:41:04,065 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:41:04,065 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:41:04,065 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:41:04,070 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 07:41:04,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:04,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:04,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:04,101 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:41:04,101 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:04,102 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:41:04,102 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 07:41:04,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:04,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:04,107 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:04,107 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:41:04,108 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:04,115 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-19 07:41:04,116 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 07:41:04,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-19 07:41:04,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124963956] [2023-11-19 07:41:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:04,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:04,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:04,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-19 07:41:04,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920377826] [2023-11-19 07:41:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:04,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:04,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:04,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-19 07:41:04,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365947410] [2023-11-19 07:41:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:04,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:04,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:04,736 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:04,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:04,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:04,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:04,737 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:04,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:04,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:04,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:04,738 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2023-11-19 07:41:04,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:04,738 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:04,758 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 07:41:04,771 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 07:41:04,775 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 07:41:04,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:04,788 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 07:41:04,794 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 07:41:04,799 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 07:41:04,804 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 07:41:04,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:04,922 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:04,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:04,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:04,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:41:04,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:04,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:04,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:04,985 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 07:41:05,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:05,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:41:05,065 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:05,065 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 07:41:05,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:41:05,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:05,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,109 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:05,109 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 07:41:05,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:41:05,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:05,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,160 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:05,160 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 07:41:05,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:41:05,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:05,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,230 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:05,230 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 07:41:05,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:41:05,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:05,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,297 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:05,297 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 07:41:05,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:41:05,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:05,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:05,352 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 07:41:05,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:41:05,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:05,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:05,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:05,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:41:05,548 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:05,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,553 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:05,553 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:05,553 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:05,553 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:05,553 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:05,553 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,554 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:05,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:05,554 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2023-11-19 07:41:05,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:05,554 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:05,556 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 07:41:05,562 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 07:41:05,568 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 07:41:05,572 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 07:41:05,576 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 07:41:05,579 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 07:41:05,592 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:05,595 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 07:41:05,678 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:05,683 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:05,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,689 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:41:05,702 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 07:41:05,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:05,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:05,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:05,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:05,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:05,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:05,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:05,742 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:05,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,762 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:41:05,766 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 07:41:05,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:05,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:05,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:05,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:05,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:05,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:05,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:05,781 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:05,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:41:05,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:41:05,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:05,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:05,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:05,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:05,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:05,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:05,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:05,862 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:05,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,878 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:41:05,882 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 07:41:05,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:05,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:05,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:05,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:05,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:05,896 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:05,896 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:05,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:05,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,920 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:41:05,923 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 07:41:05,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:05,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:05,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:05,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:05,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:05,935 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:05,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:05,960 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:05,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,981 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:41:05,984 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 07:41:05,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:05,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:05,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:05,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:05,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:06,001 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:06,001 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:06,016 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:06,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:06,020 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:06,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:06,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:06,054 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:06,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:41:06,057 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:06,057 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:06,057 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:06,058 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-19 07:41:06,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:06,093 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:06,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:41:06,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:06,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:06,345 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 07:41:06,381 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 07:41:06,383 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 07:41:06,590 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 07:41:06,593 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 07:41:06,599 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 07:41:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-19 07:41:06,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-19 07:41:06,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:06,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-19 07:41:06,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:06,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-19 07:41:06,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:06,608 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-19 07:41:06,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:06,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-19 07:41:06,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-19 07:41:06,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-19 07:41:06,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-19 07:41:06,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:06,631 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-19 07:41:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-19 07:41:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-19 07:41:06,669 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 07:41:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-19 07:41:06,673 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-19 07:41:06,673 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-19 07:41:06,673 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:41:06,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-19 07:41:06,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:06,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:06,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:06,677 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:06,677 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:06,678 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 := 8; 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#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-19 07:41:06,678 INFO L750 eck$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 07:41:06,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-19 07:41:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:06,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361669577] [2023-11-19 07:41:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:06,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:06,931 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 07:41:06,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:06,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361669577] [2023-11-19 07:41:06,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361669577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:06,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:06,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:06,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375023283] [2023-11-19 07:41:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:06,936 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:06,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-19 07:41:06,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:06,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744411303] [2023-11-19 07:41:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:41:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:07,058 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 07:41:07,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744411303] [2023-11-19 07:41:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744411303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:07,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:07,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129909817] [2023-11-19 07:41:07,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:07,063 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:41:07,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:07,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:07,068 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 07:41:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:07,167 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-19 07:41:07,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-19 07:41:07,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:07,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-19 07:41:07,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-19 07:41:07,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-19 07:41:07,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-19 07:41:07,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:07,185 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-19 07:41:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-19 07:41:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-19 07:41:07,192 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 07:41:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-19 07:41:07,194 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-19 07:41:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:07,195 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-19 07:41:07,195 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:41:07,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-19 07:41:07,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:41:07,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:07,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:07,199 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:07,199 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:07,199 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$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 07:41:07,200 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 07:41:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-19 07:41:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:07,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394102346] [2023-11-19 07:41:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394102346] [2023-11-19 07:41:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394102346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:07,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474556281] [2023-11-19 07:41:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:07,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:07,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:07,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:41:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:07,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:41:07,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:07,445 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 07:41:07,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:07,624 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 07:41:07,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474556281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:07,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:07,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-19 07:41:07,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121370521] [2023-11-19 07:41:07,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:07,626 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:07,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-19 07:41:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697329034] [2023-11-19 07:41:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:07,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:07,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:07,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:07,916 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:07,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:07,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:07,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:07,917 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:07,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:07,917 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:07,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:07,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2023-11-19 07:41:07,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:07,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:07,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:07,923 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:07,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:07,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:07,932 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 07:41:07,936 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 07:41:07,943 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 07:41:07,946 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 07:41:07,948 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 07:41:08,012 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:08,012 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:08,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,017 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:41:08,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:08,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:08,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:08,039 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 07:41:08,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-19 07:41:08,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,059 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:41:08,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:08,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:08,074 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:08,074 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 07:41:08,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,088 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:41:08,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:08,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:08,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:08,101 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 07:41:08,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,119 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:41:08,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:08,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:08,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:08,142 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 07:41:08,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,162 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:41:08,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:08,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:08,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:08,176 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 07:41:08,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,194 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:41:08,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:08,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:08,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,242 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:41:08,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:08,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:08,284 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:08,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-19 07:41:08,301 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:08,301 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:08,301 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:08,301 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:08,301 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:08,301 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,301 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:08,301 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:08,301 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2023-11-19 07:41:08,301 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:08,301 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:08,303 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 07:41:08,306 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 07:41:08,309 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 07:41:08,312 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 07:41:08,314 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 07:41:08,319 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 07:41:08,322 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 07:41:08,324 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 07:41:08,327 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 07:41:08,384 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:08,384 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:08,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,389 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:41:08,393 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 07:41:08,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:08,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:08,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:08,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:08,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:08,410 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:08,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:08,424 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:08,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,439 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,442 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 07:41:08,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:41:08,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:08,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:08,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:08,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:08,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:08,453 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:08,454 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:08,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:08,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,489 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,493 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 07:41:08,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:08,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:08,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:08,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:08,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:08,506 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:08,506 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:08,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:41:08,532 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:08,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,557 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,561 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 07:41:08,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:08,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:08,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:08,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:08,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:08,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:08,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:08,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:41:08,592 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:08,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,616 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,621 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 07:41:08,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:08,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:08,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:08,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:08,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:08,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:08,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:08,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:41:08,652 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:08,656 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:08,656 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:08,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:08,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,658 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:41:08,660 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:08,660 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:08,660 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:08,660 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-19 07:41:08,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,677 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:08,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:08,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:41:08,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:08,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:08,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:08,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:09,031 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 07:41:09,032 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 07:41:09,032 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 07:41:09,587 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 07:41:09,588 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 07:41:09,589 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 07:41:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-19 07:41:09,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-19 07:41:09,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:09,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-19 07:41:09,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:09,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-19 07:41:09,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:09,594 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-19 07:41:09,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:41:09,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-19 07:41:09,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-19 07:41:09,609 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-19 07:41:09,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-19 07:41:09,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:09,611 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-19 07:41:09,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-19 07:41:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-19 07:41:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2023-11-19 07:41:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-19 07:41:09,631 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-19 07:41:09,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:41:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:41:09,632 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 07:41:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:09,945 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2023-11-19 07:41:09,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2023-11-19 07:41:09,951 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:41:09,958 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2023-11-19 07:41:09,958 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2023-11-19 07:41:09,959 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2023-11-19 07:41:09,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2023-11-19 07:41:09,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:09,959 INFO L218 hiAutomatonCegarLoop]: Abstraction has 204 states and 272 transitions. [2023-11-19 07:41:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2023-11-19 07:41:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2023-11-19 07:41:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2023-11-19 07:41:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2023-11-19 07:41:09,982 INFO L240 hiAutomatonCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-19 07:41:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:41:09,983 INFO L428 stractBuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-19 07:41:09,983 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:41:09,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2023-11-19 07:41:09,986 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-19 07:41:09,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:09,986 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:09,988 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 07:41:09,989 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:09,989 INFO L748 eck$LassoCheckResult]: Stem: 1313#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1277#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1316#$Ultimate##0 ~n := #in~n; 1301#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1246#L15 call #t~ret4 := fibo2(~n - 1);< 1353#$Ultimate##0 ~n := #in~n; 1352#L20 assume !(~n < 1); 1245#L22 assume !(1 == ~n); 1247#L25 call #t~ret6 := fibo1(~n - 1);< 1274#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1304#$Ultimate##0 ~n := #in~n; 1425#L20 assume !(~n < 1); 1424#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1346#$Ultimate##0 ~n := #in~n; 1347#L10 assume !(~n < 1); 1355#L12 assume !(1 == ~n); 1356#L15 call #t~ret4 := fibo2(~n - 1);< 1364#$Ultimate##0 ~n := #in~n; 1368#L20 assume ~n < 1;#res := 0; 1367#fibo2FINAL assume true; 1363#fibo2EXIT >#52#return; 1360#L15-1 call #t~ret5 := fibo2(~n - 2);< 1361#$Ultimate##0 ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1362#fibo2FINAL assume true; 1359#fibo2EXIT >#54#return; 1357#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1358#fibo1FINAL assume true; 1423#fibo1EXIT >#48#return; 1255#L25-1 call #t~ret7 := fibo1(~n - 2);< 1345#$Ultimate##0 ~n := #in~n; 1374#L10 assume ~n < 1;#res := 0; 1253#fibo1FINAL assume true; 1256#fibo1EXIT >#50#return; 1422#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1420#fibo2FINAL assume true; 1417#fibo2EXIT >#52#return; 1295#L15-1 call #t~ret5 := fibo2(~n - 2);< 1303#$Ultimate##0 [2023-11-19 07:41:09,989 INFO L750 eck$LassoCheckResult]: Loop: 1303#$Ultimate##0 ~n := #in~n; 1429#L20 assume !(~n < 1); 1430#L22 assume !(1 == ~n); 1272#L25 call #t~ret6 := fibo1(~n - 1);< 1269#$Ultimate##0 ~n := #in~n; 1273#L10 assume !(~n < 1); 1289#L12 assume !(1 == ~n); 1291#L15 call #t~ret4 := fibo2(~n - 1);< 1303#$Ultimate##0 [2023-11-19 07:41:09,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:09,990 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-19 07:41:09,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:09,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265543508] [2023-11-19 07:41:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:09,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:41:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:41:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:41:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,152 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 07:41:10,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:10,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265543508] [2023-11-19 07:41:10,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265543508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:10,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658088504] [2023-11-19 07:41:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:10,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:10,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:10,154 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:10,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-19 07:41:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:41:10,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:10,409 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 07:41:10,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:10,932 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 07:41:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658088504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:10,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:10,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2023-11-19 07:41:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12597081] [2023-11-19 07:41:10,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:10,935 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:10,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-19 07:41:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182266479] [2023-11-19 07:41:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:10,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:10,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:11,061 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:11,061 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:11,061 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:11,061 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:11,061 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:11,062 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,062 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:11,062 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:11,062 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2023-11-19 07:41:11,062 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:11,062 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:11,063 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 07:41:11,065 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 07:41:11,068 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 07:41:11,070 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 07:41:11,072 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 07:41:11,074 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 07:41:11,076 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 07:41:11,085 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 07:41:11,136 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:11,136 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:11,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,137 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:11,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:41:11,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:11,160 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 07:41:11,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,173 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:11,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 07:41:11,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:11,187 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 07:41:11,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-19 07:41:11,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,203 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 07:41:11,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:11,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,217 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:11,218 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 07:41:11,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,234 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 07:41:11,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:11,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,273 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:11,273 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 07:41:11,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,298 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:11,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 07:41:11,333 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:11,333 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 07:41:11,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-19 07:41:11,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,350 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-19 07:41:11,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:11,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,364 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:11,365 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 07:41:11,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-19 07:41:11,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,391 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-19 07:41:11,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:11,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-19 07:41:11,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,417 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:11,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:11,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-19 07:41:11,534 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:11,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,541 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:11,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:11,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:11,541 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:11,541 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:11,541 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,541 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:11,541 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:11,541 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2023-11-19 07:41:11,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:11,542 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:11,543 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 07:41:11,548 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 07:41:11,550 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 07:41:11,552 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 07:41:11,555 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 07:41:11,557 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 07:41:11,559 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 07:41:11,563 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 07:41:11,626 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:11,626 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:11,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,628 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,635 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 07:41:11,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-19 07:41:11,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:11,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:11,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:11,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:11,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:11,650 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:11,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:11,672 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:11,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,696 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,701 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 07:41:11,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-19 07:41:11,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:11,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:11,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:11,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:11,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:11,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:11,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:11,730 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:11,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,753 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,757 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 07:41:11,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:11,770 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:11,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:11,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:11,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:11,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:11,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:11,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-19 07:41:11,784 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:11,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,810 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,813 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 07:41:11,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-19 07:41:11,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:11,826 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:11,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:11,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:11,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:11,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:11,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:11,844 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:11,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,867 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,873 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 07:41:11,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:11,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:11,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:11,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:11,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:11,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:11,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:11,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-19 07:41:11,900 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:11,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,921 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,925 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 07:41:11,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-19 07:41:11,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:11,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:11,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:11,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:11,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:11,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:11,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:11,956 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:11,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,977 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,981 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 07:41:11,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:11,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:11,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:11,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:11,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:11,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:11,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:11,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-19 07:41:12,008 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:12,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-19 07:41:12,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:12,021 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:12,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-19 07:41:12,023 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 07:41:12,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:12,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:12,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:12,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:12,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:12,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:12,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:12,056 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:12,064 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:12,064 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:12,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:12,070 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:12,071 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:12,071 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:12,072 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:12,072 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-19 07:41:12,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-19 07:41:12,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:12,092 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:12,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:12,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:12,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:12,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:12,668 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 07:41:12,669 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 07:41:12,669 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 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 07:41:12,874 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. 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 698 states and 973 transitions. Complement of second has 26 states. [2023-11-19 07:41:12,875 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 07:41:12,878 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 07:41:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-19 07:41:12,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-19 07:41:12,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:12,881 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:12,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:12,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:13,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:13,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:13,397 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 07:41:13,399 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 07:41:13,399 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 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 07:41:13,623 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. 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 698 states and 973 transitions. Complement of second has 26 states. [2023-11-19 07:41:13,624 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 07:41:13,626 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 07:41:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-19 07:41:13,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-19 07:41:13,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:13,627 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:13,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:13,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:13,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:14,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:14,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:14,119 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 07:41:14,120 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 07:41:14,120 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 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 07:41:14,327 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. 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 587 states and 803 transitions. Complement of second has 25 states. [2023-11-19 07:41:14,328 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 07:41:14,329 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 07:41:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-19 07:41:14,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-19 07:41:14,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:14,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-19 07:41:14,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:14,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-19 07:41:14,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:14,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2023-11-19 07:41:14,343 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-19 07:41:14,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2023-11-19 07:41:14,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2023-11-19 07:41:14,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2023-11-19 07:41:14,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2023-11-19 07:41:14,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:14,356 INFO L218 hiAutomatonCegarLoop]: Abstraction has 476 states and 676 transitions. [2023-11-19 07:41:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2023-11-19 07:41:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2023-11-19 07:41:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2023-11-19 07:41:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2023-11-19 07:41:14,427 INFO L240 hiAutomatonCegarLoop]: Abstraction has 401 states and 544 transitions. [2023-11-19 07:41:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:41:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:41:14,429 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-19 07:41:15,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:15,115 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2023-11-19 07:41:15,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2023-11-19 07:41:15,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:15,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2023-11-19 07:41:15,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2023-11-19 07:41:15,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2023-11-19 07:41:15,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2023-11-19 07:41:15,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:15,138 INFO L218 hiAutomatonCegarLoop]: Abstraction has 457 states and 645 transitions. [2023-11-19 07:41:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2023-11-19 07:41:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2023-11-19 07:41:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2023-11-19 07:41:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2023-11-19 07:41:15,167 INFO L240 hiAutomatonCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-19 07:41:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:41:15,168 INFO L428 stractBuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-19 07:41:15,168 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:41:15,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2023-11-19 07:41:15,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:15,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:15,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:15,177 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:15,177 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [12, 11, 10, 10, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2] [2023-11-19 07:41:15,178 INFO L748 eck$LassoCheckResult]: Stem: 5357#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5323#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5324#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5364#$Ultimate##0 ~n := #in~n; 5411#L10 assume !(~n < 1); 5410#L12 assume !(1 == ~n); 5406#L15 call #t~ret4 := fibo2(~n - 1);< 5409#$Ultimate##0 ~n := #in~n; 5408#L20 assume !(~n < 1); 5407#L22 assume !(1 == ~n); 5402#L25 call #t~ret6 := fibo1(~n - 1);< 5405#$Ultimate##0 ~n := #in~n; 5404#L10 assume !(~n < 1); 5403#L12 assume !(1 == ~n); 5398#L15 call #t~ret4 := fibo2(~n - 1);< 5401#$Ultimate##0 ~n := #in~n; 5400#L20 assume !(~n < 1); 5399#L22 assume !(1 == ~n); 5394#L25 call #t~ret6 := fibo1(~n - 1);< 5397#$Ultimate##0 ~n := #in~n; 5396#L10 assume !(~n < 1); 5395#L12 assume !(1 == ~n); 5379#L15 call #t~ret4 := fibo2(~n - 1);< 5377#$Ultimate##0 ~n := #in~n; 5387#L20 assume !(~n < 1); 5388#L22 assume !(1 == ~n); 5331#L25 call #t~ret6 := fibo1(~n - 1);< 5389#$Ultimate##0 ~n := #in~n; 5390#L10 assume !(~n < 1); 5507#L12 assume 1 == ~n;#res := 1; 5508#fibo1FINAL assume true; 5495#fibo1EXIT >#48#return; 5467#L25-1 call #t~ret7 := fibo1(~n - 2);< 5490#$Ultimate##0 ~n := #in~n; 5473#L10 assume !(~n < 1); 5474#L12 assume !(1 == ~n); 5461#L15 call #t~ret4 := fibo2(~n - 1);< 5465#$Ultimate##0 ~n := #in~n; 5464#L20 assume !(~n < 1); 5462#L22 assume 1 == ~n;#res := 1; 5463#fibo2FINAL assume true; 5601#fibo2EXIT >#52#return; 5522#L15-1 [2023-11-19 07:41:15,178 INFO L750 eck$LassoCheckResult]: Loop: 5522#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5302#L20 assume !(~n < 1); 5517#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5577#$Ultimate##0 ~n := #in~n; 5524#L10 assume !(~n < 1); 5525#L12 assume 1 == ~n;#res := 1; 5608#fibo1FINAL assume true; 5620#fibo1EXIT >#48#return; 5571#L25-1 call #t~ret7 := fibo1(~n - 2);< 5619#$Ultimate##0 ~n := #in~n; 5618#L10 assume !(~n < 1); 5617#L12 assume !(1 == ~n); 5298#L15 call #t~ret4 := fibo2(~n - 1);< 5297#$Ultimate##0 ~n := #in~n; 5302#L20 assume !(~n < 1); 5517#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5577#$Ultimate##0 ~n := #in~n; 5524#L10 assume !(~n < 1); 5525#L12 assume !(1 == ~n); 5300#L15 call #t~ret4 := fibo2(~n - 1);< 5297#$Ultimate##0 ~n := #in~n; 5302#L20 assume !(~n < 1); 5517#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5577#$Ultimate##0 ~n := #in~n; 5524#L10 assume !(~n < 1); 5525#L12 assume 1 == ~n;#res := 1; 5608#fibo1FINAL assume true; 5620#fibo1EXIT >#48#return; 5571#L25-1 call #t~ret7 := fibo1(~n - 2);< 5619#$Ultimate##0 ~n := #in~n; 5618#L10 assume !(~n < 1); 5617#L12 assume !(1 == ~n); 5298#L15 call #t~ret4 := fibo2(~n - 1);< 5297#$Ultimate##0 ~n := #in~n; 5301#L20 assume !(~n < 1); 5606#L22 assume !(1 == ~n); 5604#L25 call #t~ret6 := fibo1(~n - 1);< 5641#$Ultimate##0 ~n := #in~n; 5644#L10 assume !(~n < 1); 5643#L12 assume 1 == ~n;#res := 1; 5642#fibo1FINAL assume true; 5640#fibo1EXIT >#48#return; 5637#L25-1 call #t~ret7 := fibo1(~n - 2);< 5638#$Ultimate##0 ~n := #in~n; 5653#L10 assume ~n < 1;#res := 0; 5652#fibo1FINAL assume true; 5636#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5522#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5546#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5639#fibo1FINAL assume true; 5635#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5519#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5544#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5592#fibo1FINAL assume true; 5575#fibo1EXIT >#48#return; 5562#L25-1 call #t~ret7 := fibo1(~n - 2);< 5568#$Ultimate##0 ~n := #in~n; 5614#L10 assume !(~n < 1); 5611#L12 assume !(1 == ~n); 5555#L15 call #t~ret4 := fibo2(~n - 1);< 5572#$Ultimate##0 ~n := #in~n; 5587#L20 assume !(~n < 1); 5583#L22 assume !(1 == ~n); 5565#L25 call #t~ret6 := fibo1(~n - 1);< 5568#$Ultimate##0 ~n := #in~n; 5614#L10 assume !(~n < 1); 5611#L12 assume 1 == ~n;#res := 1; 5610#fibo1FINAL assume true; 5616#fibo1EXIT >#48#return; 5560#L25-1 call #t~ret7 := fibo1(~n - 2);< 5615#$Ultimate##0 ~n := #in~n; 5612#L10 assume !(~n < 1); 5609#L12 assume !(1 == ~n); 5556#L15 call #t~ret4 := fibo2(~n - 1);< 5572#$Ultimate##0 ~n := #in~n; 5587#L20 assume !(~n < 1); 5583#L22 assume !(1 == ~n); 5565#L25 call #t~ret6 := fibo1(~n - 1);< 5568#$Ultimate##0 ~n := #in~n; 5614#L10 assume !(~n < 1); 5611#L12 assume 1 == ~n;#res := 1; 5610#fibo1FINAL assume true; 5616#fibo1EXIT >#48#return; 5560#L25-1 call #t~ret7 := fibo1(~n - 2);< 5615#$Ultimate##0 ~n := #in~n; 5612#L10 assume ~n < 1;#res := 0; 5613#fibo1FINAL assume true; 5559#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5522#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5546#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5639#fibo1FINAL assume true; 5635#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5519#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5544#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5592#fibo1FINAL assume true; 5575#fibo1EXIT >#50#return; 5567#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5570#fibo2FINAL assume true; 5554#fibo2EXIT >#52#return; 5522#L15-1 [2023-11-19 07:41:15,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1086211661, now seen corresponding path program 1 times [2023-11-19 07:41:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458577744] [2023-11-19 07:41:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 07:41:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:41:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:15,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458577744] [2023-11-19 07:41:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458577744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055543637] [2023-11-19 07:41:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:15,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:15,462 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:15,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-19 07:41:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:15,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:41:15,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:15,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:15,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055543637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:15,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:15,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2023-11-19 07:41:15,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365368800] [2023-11-19 07:41:15,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:15,842 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:15,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1084313501, now seen corresponding path program 1 times [2023-11-19 07:41:15,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:15,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118155835] [2023-11-19 07:41:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:41:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:41:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-19 07:41:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-19 07:41:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-19 07:41:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-19 07:41:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118155835] [2023-11-19 07:41:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118155835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602055566] [2023-11-19 07:41:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:16,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:16,217 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:16,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-19 07:41:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:41:16,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2023-11-19 07:41:16,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-19 07:41:16,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602055566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:16,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:16,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-19 07:41:16,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282239273] [2023-11-19 07:41:16,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:16,597 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:41:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:16,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:41:16,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:41:16,599 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 13 states have internal predecessors, (41), 8 states have call successors, (10), 8 states have call predecessors, (10), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:41:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:16,925 INFO L93 Difference]: Finished difference Result 436 states and 604 transitions. [2023-11-19 07:41:16,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 436 states and 604 transitions. [2023-11-19 07:41:16,931 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:16,938 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 436 states to 431 states and 597 transitions. [2023-11-19 07:41:16,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 231 [2023-11-19 07:41:16,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 231 [2023-11-19 07:41:16,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 431 states and 597 transitions. [2023-11-19 07:41:16,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:16,943 INFO L218 hiAutomatonCegarLoop]: Abstraction has 431 states and 597 transitions. [2023-11-19 07:41:16,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states and 597 transitions. [2023-11-19 07:41:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2023-11-19 07:41:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 276 states have (on average 1.2028985507246377) internal successors, (332), 304 states have internal predecessors, (332), 89 states have call successors, (92), 60 states have call predecessors, (92), 60 states have return successors, (152), 60 states have call predecessors, (152), 87 states have call successors, (152) [2023-11-19 07:41:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 576 transitions. [2023-11-19 07:41:16,969 INFO L240 hiAutomatonCegarLoop]: Abstraction has 425 states and 576 transitions. [2023-11-19 07:41:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:41:16,970 INFO L428 stractBuchiCegarLoop]: Abstraction has 425 states and 576 transitions. [2023-11-19 07:41:16,970 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:41:16,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 425 states and 576 transitions. [2023-11-19 07:41:16,974 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:16,974 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:16,974 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:16,976 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:16,977 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 07:41:16,977 INFO L748 eck$LassoCheckResult]: Stem: 7748#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7700#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 7701#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7754#$Ultimate##0 ~n := #in~n; 7823#L10 assume !(~n < 1); 7822#L12 assume !(1 == ~n); 7818#L15 call #t~ret4 := fibo2(~n - 1);< 7821#$Ultimate##0 ~n := #in~n; 7820#L20 assume !(~n < 1); 7819#L22 assume !(1 == ~n); 7814#L25 call #t~ret6 := fibo1(~n - 1);< 7817#$Ultimate##0 ~n := #in~n; 7816#L10 assume !(~n < 1); 7815#L12 assume !(1 == ~n); 7810#L15 call #t~ret4 := fibo2(~n - 1);< 7813#$Ultimate##0 ~n := #in~n; 7812#L20 assume !(~n < 1); 7811#L22 assume !(1 == ~n); 7806#L25 call #t~ret6 := fibo1(~n - 1);< 7809#$Ultimate##0 ~n := #in~n; 7808#L10 assume !(~n < 1); 7807#L12 assume !(1 == ~n); 7795#L15 call #t~ret4 := fibo2(~n - 1);< 7805#$Ultimate##0 ~n := #in~n; 7804#L20 assume !(~n < 1); 7800#L22 assume !(1 == ~n); 7715#L25 call #t~ret6 := fibo1(~n - 1);< 7796#$Ultimate##0 ~n := #in~n; 7802#L10 assume !(~n < 1); 7904#L12 assume !(1 == ~n); 7867#L15 call #t~ret4 := fibo2(~n - 1);< 7906#$Ultimate##0 ~n := #in~n; 7910#L20 assume !(~n < 1); 7908#L22 assume 1 == ~n;#res := 1; 7907#fibo2FINAL assume true; 7905#fibo2EXIT >#52#return; 7902#L15-1 call #t~ret5 := fibo2(~n - 2);< 7903#$Ultimate##0 ~n := #in~n; 7911#L20 assume ~n < 1;#res := 0; 7909#fibo2FINAL assume true; 7901#fibo2EXIT >#54#return; 7899#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7898#fibo1FINAL assume true; 7896#fibo1EXIT >#48#return; 7882#L25-1 call #t~ret7 := fibo1(~n - 2);< 7890#$Ultimate##0 ~n := #in~n; 7986#L10 assume ~n < 1;#res := 0; 7970#fibo1FINAL assume true; 7965#fibo1EXIT >#50#return; 7959#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7958#fibo2FINAL assume true; 7954#fibo2EXIT >#52#return; 7694#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 [2023-11-19 07:41:16,977 INFO L750 eck$LassoCheckResult]: Loop: 7952#$Ultimate##0 ~n := #in~n; 7680#L20 assume !(~n < 1); 7918#L22 assume !(1 == ~n); 7689#L25 call #t~ret6 := fibo1(~n - 1);< 7895#$Ultimate##0 ~n := #in~n; 7894#L10 assume !(~n < 1); 7893#L12 assume !(1 == ~n); 7677#L15 call #t~ret4 := fibo2(~n - 1);< 7676#$Ultimate##0 ~n := #in~n; 7680#L20 assume !(~n < 1); 7918#L22 assume !(1 == ~n); 7689#L25 call #t~ret6 := fibo1(~n - 1);< 7895#$Ultimate##0 ~n := #in~n; 7894#L10 assume !(~n < 1); 7893#L12 assume !(1 == ~n); 7677#L15 call #t~ret4 := fibo2(~n - 1);< 7676#$Ultimate##0 ~n := #in~n; 7679#L20 assume !(~n < 1); 8065#L22 assume 1 == ~n;#res := 1; 8018#fibo2FINAL assume true; 7976#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 ~n := #in~n; 8001#L20 assume ~n < 1;#res := 0; 8000#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7947#fibo1FINAL assume true; 7935#fibo1EXIT >#48#return; 7941#L25-1 call #t~ret7 := fibo1(~n - 2);< 7944#$Ultimate##0 ~n := #in~n; 7997#L10 assume !(~n < 1); 7996#L12 assume !(1 == ~n); 7722#L15 call #t~ret4 := fibo2(~n - 1);< 7978#$Ultimate##0 ~n := #in~n; 7985#L20 assume !(~n < 1); 7983#L22 assume !(1 == ~n); 7940#L25 call #t~ret6 := fibo1(~n - 1);< 7944#$Ultimate##0 ~n := #in~n; 7997#L10 assume !(~n < 1); 7996#L12 assume !(1 == ~n); 7722#L15 call #t~ret4 := fibo2(~n - 1);< 7978#$Ultimate##0 ~n := #in~n; 7985#L20 assume !(~n < 1); 7983#L22 assume 1 == ~n;#res := 1; 7984#fibo2FINAL assume true; 7975#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 ~n := #in~n; 8001#L20 assume ~n < 1;#res := 0; 8000#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7947#fibo1FINAL assume true; 7935#fibo1EXIT >#48#return; 7941#L25-1 call #t~ret7 := fibo1(~n - 2);< 7944#$Ultimate##0 ~n := #in~n; 7997#L10 assume ~n < 1;#res := 0; 7991#fibo1FINAL assume true; 7964#fibo1EXIT >#50#return; 7699#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7725#fibo2FINAL assume true; 7972#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 ~n := #in~n; 8001#L20 assume ~n < 1;#res := 0; 8000#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7947#fibo1FINAL assume true; 7935#fibo1EXIT >#50#return; 7699#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7725#fibo2FINAL assume true; 7972#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 [2023-11-19 07:41:16,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 138509055, now seen corresponding path program 1 times [2023-11-19 07:41:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195542695] [2023-11-19 07:41:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 07:41:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:41:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195542695] [2023-11-19 07:41:17,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195542695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:17,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755134855] [2023-11-19 07:41:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:17,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:17,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:17,340 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:17,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-19 07:41:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:41:17,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:41:17,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:41:17,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755134855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:17,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:17,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2023-11-19 07:41:17,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836213900] [2023-11-19 07:41:17,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:17,810 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:17,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-19 07:41:17,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:17,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497544436] [2023-11-19 07:41:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:17,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:41:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:41:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,093 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 07:41:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497544436] [2023-11-19 07:41:18,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497544436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781642295] [2023-11-19 07:41:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:18,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:18,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:18,096 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:18,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-19 07:41:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:18,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:18,258 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 07:41:18,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:18,726 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 07:41:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781642295] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:18,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-19 07:41:18,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631912837] [2023-11-19 07:41:18,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:18,728 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:41:18,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:18,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:41:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:41:18,729 INFO L87 Difference]: Start difference. First operand 425 states and 576 transitions. cyclomatic complexity: 158 Second operand has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 18 states have internal predecessors, (49), 12 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 07:41:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:19,161 INFO L93 Difference]: Finished difference Result 456 states and 630 transitions. [2023-11-19 07:41:19,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 456 states and 630 transitions. [2023-11-19 07:41:19,171 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:19,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 456 states to 456 states and 630 transitions. [2023-11-19 07:41:19,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 251 [2023-11-19 07:41:19,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 251 [2023-11-19 07:41:19,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 456 states and 630 transitions. [2023-11-19 07:41:19,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:19,184 INFO L218 hiAutomatonCegarLoop]: Abstraction has 456 states and 630 transitions. [2023-11-19 07:41:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states and 630 transitions. [2023-11-19 07:41:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 438. [2023-11-19 07:41:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 284 states have (on average 1.1971830985915493) internal successors, (340), 314 states have internal predecessors, (340), 90 states have call successors, (93), 61 states have call predecessors, (93), 64 states have return successors, (159), 62 states have call predecessors, (159), 88 states have call successors, (159) [2023-11-19 07:41:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 592 transitions. [2023-11-19 07:41:19,204 INFO L240 hiAutomatonCegarLoop]: Abstraction has 438 states and 592 transitions. [2023-11-19 07:41:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 07:41:19,205 INFO L428 stractBuchiCegarLoop]: Abstraction has 438 states and 592 transitions. [2023-11-19 07:41:19,205 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:41:19,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 438 states and 592 transitions. [2023-11-19 07:41:19,209 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-19 07:41:19,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:19,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:19,213 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:19,213 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:19,213 INFO L748 eck$LassoCheckResult]: Stem: 9702#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 9662#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 9663#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9708#$Ultimate##0 ~n := #in~n; 9774#L10 assume !(~n < 1); 9773#L12 assume !(1 == ~n); 9769#L15 call #t~ret4 := fibo2(~n - 1);< 9772#$Ultimate##0 ~n := #in~n; 9771#L20 assume !(~n < 1); 9770#L22 assume !(1 == ~n); 9765#L25 call #t~ret6 := fibo1(~n - 1);< 9768#$Ultimate##0 ~n := #in~n; 9767#L10 assume !(~n < 1); 9766#L12 assume !(1 == ~n); 9761#L15 call #t~ret4 := fibo2(~n - 1);< 9764#$Ultimate##0 ~n := #in~n; 9763#L20 assume !(~n < 1); 9762#L22 assume !(1 == ~n); 9757#L25 call #t~ret6 := fibo1(~n - 1);< 9760#$Ultimate##0 ~n := #in~n; 9759#L10 assume !(~n < 1); 9758#L12 assume !(1 == ~n); 9743#L15 call #t~ret4 := fibo2(~n - 1);< 9755#$Ultimate##0 ~n := #in~n; 9754#L20 assume !(~n < 1); 9751#L22 assume !(1 == ~n); 9683#L25 call #t~ret6 := fibo1(~n - 1);< 9744#$Ultimate##0 ~n := #in~n; 9733#L10 assume !(~n < 1); 9734#L12 assume !(1 == ~n); 9722#L15 call #t~ret4 := fibo2(~n - 1);< 9723#$Ultimate##0 ~n := #in~n; 9735#L20 assume !(~n < 1); 9736#L22 assume !(1 == ~n); 9682#L25 call #t~ret6 := fibo1(~n - 1);< 9744#$Ultimate##0 ~n := #in~n; 9752#L10 assume !(~n < 1); 9852#L12 assume 1 == ~n;#res := 1; 9850#fibo1FINAL assume true; 9846#fibo1EXIT >#48#return; 9826#L25-1 call #t~ret7 := fibo1(~n - 2);< 9843#$Ultimate##0 ~n := #in~n; 9945#L10 assume ~n < 1;#res := 0; 9946#fibo1FINAL assume true; 10011#fibo1EXIT >#50#return; 9940#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 10006#fibo2FINAL assume true; 9949#fibo2EXIT >#52#return; 9863#L15-1 [2023-11-19 07:41:19,213 INFO L750 eck$LassoCheckResult]: Loop: 9863#L15-1 call #t~ret5 := fibo2(~n - 2);< 9892#$Ultimate##0 ~n := #in~n; 9951#L20 assume !(~n < 1); 9859#L22 assume !(1 == ~n); 9866#L25 call #t~ret6 := fibo1(~n - 1);< 9944#$Ultimate##0 ~n := #in~n; 9976#L10 assume !(~n < 1); 9974#L12 assume !(1 == ~n); 9860#L15 call #t~ret4 := fibo2(~n - 1);< 9956#$Ultimate##0 ~n := #in~n; 9985#L20 assume !(~n < 1); 9983#L22 assume !(1 == ~n); 9984#L25 call #t~ret6 := fibo1(~n - 1);< 9995#$Ultimate##0 ~n := #in~n; 9999#L10 assume !(~n < 1); 9998#L12 assume 1 == ~n;#res := 1; 9997#fibo1FINAL assume true; 9994#fibo1EXIT >#48#return; 9967#L25-1 call #t~ret7 := fibo1(~n - 2);< 9969#$Ultimate##0 ~n := #in~n; 9978#L10 assume ~n < 1;#res := 0; 9979#fibo1FINAL assume true; 10001#fibo1EXIT >#50#return; 9988#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9987#fibo2FINAL assume true; 9952#fibo2EXIT >#52#return; 9863#L15-1 [2023-11-19 07:41:19,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash -377478758, now seen corresponding path program 1 times [2023-11-19 07:41:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:19,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523534322] [2023-11-19 07:41:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:41:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:41:19,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:19,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523534322] [2023-11-19 07:41:19,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523534322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:19,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109986471] [2023-11-19 07:41:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:19,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:19,576 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:19,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-19 07:41:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:19,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:41:19,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:41:20,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109986471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:20,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:20,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2023-11-19 07:41:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024372776] [2023-11-19 07:41:20,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:20,114 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:20,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2023-11-19 07:41:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106621532] [2023-11-19 07:41:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:20,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:20,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:20,431 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:20,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:20,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:20,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:20,431 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:20,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:20,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:20,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2023-11-19 07:41:20,431 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:20,432 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:20,433 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 07:41:20,435 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 07:41:20,438 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 07:41:20,441 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 07:41:20,443 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 07:41:20,446 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 07:41:20,449 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 07:41:20,452 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 07:41:20,455 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 07:41:20,508 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:20,509 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:20,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,514 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-19 07:41:20,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,540 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 07:41:20,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:20,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,560 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-19 07:41:20,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,579 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 07:41:20,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2023-11-19 07:41:20,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,619 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-19 07:41:20,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,633 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,633 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 07:41:20,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2023-11-19 07:41:20,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,673 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-19 07:41:20,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,687 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,687 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 07:41:20,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2023-11-19 07:41:20,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,726 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-19 07:41:20,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,740 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:41:20,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2023-11-19 07:41:20,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,780 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-19 07:41:20,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,781 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,793 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,793 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 07:41:20,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:20,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,832 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-19 07:41:20,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,845 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,845 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:41:20,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:20,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,868 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-19 07:41:20,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:20,885 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 07:41:20,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2023-11-19 07:41:20,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,900 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-19 07:41:20,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:20,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2023-11-19 07:41:20,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:20,929 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:20,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-19 07:41:20,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:20,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:20,968 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:20,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:20,987 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:20,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:20,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:20,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:20,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:20,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:20,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:20,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:20,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2023-11-19 07:41:20,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:20,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:20,989 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:21,001 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 07:41:21,004 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 07:41:21,006 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 07:41:21,008 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 07:41:21,011 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 07:41:21,014 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 07:41:21,019 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 07:41:21,021 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 07:41:21,068 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:21,068 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:21,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,072 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,077 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 07:41:21,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-19 07:41:21,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:21,087 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:21,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:21,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:21,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:21,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:21,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:21,090 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:21,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:21,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,103 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-19 07:41:21,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:41:21,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:21,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:21,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:21,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:21,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:21,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:21,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:21,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:21,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:21,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,161 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-19 07:41:21,170 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 07:41:21,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:21,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:21,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:21,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:21,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:21,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:21,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:21,194 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:21,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-11-19 07:41:21,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,229 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-19 07:41:21,247 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 07:41:21,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:21,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:21,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:21,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:21,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:21,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:21,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:21,268 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:21,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-19 07:41:21,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,299 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-19 07:41:21,300 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 07:41:21,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:21,310 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:21,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:21,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:21,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:21,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:21,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:21,312 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:21,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-19 07:41:21,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,330 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-19 07:41:21,331 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 07:41:21,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:21,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:21,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:21,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:21,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:21,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:21,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:21,368 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:21,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2023-11-19 07:41:21,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,387 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-19 07:41:21,389 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 07:41:21,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:21,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:21,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:21,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:21,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:21,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:21,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:21,403 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:21,406 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:21,406 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:21,414 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:21,415 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:21,416 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:21,416 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:21,416 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-19 07:41:21,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-19 07:41:21,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:21,435 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:21,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:21,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:41:21,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:21,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:21,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:41:21,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:41:21,972 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2023-11-19 07:41:21,972 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:41:22,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1825 states and 2492 transitions. Complement of second has 46 states. [2023-11-19 07:41:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2023-11-19 07:41:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:41:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2023-11-19 07:41:22,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 26 letters. [2023-11-19 07:41:22,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:22,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 74 letters. Loop has 26 letters. [2023-11-19 07:41:22,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:22,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 52 letters. [2023-11-19 07:41:22,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:22,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1825 states and 2492 transitions. [2023-11-19 07:41:22,481 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 143 [2023-11-19 07:41:22,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1825 states to 1659 states and 2309 transitions. [2023-11-19 07:41:22,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 586 [2023-11-19 07:41:22,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 620 [2023-11-19 07:41:22,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1659 states and 2309 transitions. [2023-11-19 07:41:22,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:22,516 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1659 states and 2309 transitions. [2023-11-19 07:41:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states and 2309 transitions. [2023-11-19 07:41:22,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1574. [2023-11-19 07:41:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1000 states have (on average 1.224) internal successors, (1224), 1129 states have internal predecessors, (1224), 331 states have call successors, (346), 202 states have call predecessors, (346), 243 states have return successors, (620), 242 states have call predecessors, (620), 329 states have call successors, (620) [2023-11-19 07:41:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2190 transitions. [2023-11-19 07:41:22,584 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1574 states and 2190 transitions. [2023-11-19 07:41:22,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:41:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:41:22,585 INFO L87 Difference]: Start difference. First operand 1574 states and 2190 transitions. Second operand has 26 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:41:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:23,334 INFO L93 Difference]: Finished difference Result 1762 states and 2206 transitions. [2023-11-19 07:41:23,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1762 states and 2206 transitions. [2023-11-19 07:41:23,366 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 147 [2023-11-19 07:41:23,375 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1762 states to 769 states and 919 transitions. [2023-11-19 07:41:23,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 423 [2023-11-19 07:41:23,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 423 [2023-11-19 07:41:23,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 769 states and 919 transitions. [2023-11-19 07:41:23,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:23,376 INFO L218 hiAutomatonCegarLoop]: Abstraction has 769 states and 919 transitions. [2023-11-19 07:41:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states and 919 transitions. [2023-11-19 07:41:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 647. [2023-11-19 07:41:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 421 states have (on average 1.156769596199525) internal successors, (487), 461 states have internal predecessors, (487), 136 states have call successors, (138), 100 states have call predecessors, (138), 90 states have return successors, (142), 85 states have call predecessors, (142), 102 states have call successors, (142) [2023-11-19 07:41:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 767 transitions. [2023-11-19 07:41:23,398 INFO L240 hiAutomatonCegarLoop]: Abstraction has 647 states and 767 transitions. [2023-11-19 07:41:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-19 07:41:23,400 INFO L428 stractBuchiCegarLoop]: Abstraction has 647 states and 767 transitions. [2023-11-19 07:41:23,400 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:41:23,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 647 states and 767 transitions. [2023-11-19 07:41:23,405 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 104 [2023-11-19 07:41:23,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:23,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:23,407 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:23,407 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:23,408 INFO L748 eck$LassoCheckResult]: Stem: 15974#$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); 15947#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 := 8; 15948#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 15979#$Ultimate##0 ~n := #in~n; 16052#L10 assume !(~n < 1); 16051#L12 assume !(1 == ~n); 16047#L15 call #t~ret4 := fibo2(~n - 1);< 16050#$Ultimate##0 ~n := #in~n; 16049#L20 assume !(~n < 1); 16048#L22 assume !(1 == ~n); 16043#L25 call #t~ret6 := fibo1(~n - 1);< 16046#$Ultimate##0 ~n := #in~n; 16045#L10 assume !(~n < 1); 16044#L12 assume !(1 == ~n); 16039#L15 call #t~ret4 := fibo2(~n - 1);< 16042#$Ultimate##0 ~n := #in~n; 16041#L20 assume !(~n < 1); 16040#L22 assume !(1 == ~n); 16035#L25 call #t~ret6 := fibo1(~n - 1);< 16038#$Ultimate##0 ~n := #in~n; 16037#L10 assume !(~n < 1); 16036#L12 assume !(1 == ~n); 16031#L15 call #t~ret4 := fibo2(~n - 1);< 16034#$Ultimate##0 ~n := #in~n; 16033#L20 assume !(~n < 1); 16032#L22 assume !(1 == ~n); 16026#L25 call #t~ret6 := fibo1(~n - 1);< 16029#$Ultimate##0 ~n := #in~n; 16030#L10 assume !(~n < 1); 16111#L12 assume !(1 == ~n); 16112#L15 call #t~ret4 := fibo2(~n - 1);< 16176#$Ultimate##0 ~n := #in~n; 16180#L20 assume !(~n < 1); 16179#L22 assume 1 == ~n;#res := 1; 16178#fibo2FINAL assume true; 16175#fibo2EXIT >#52#return; 16172#L15-1 call #t~ret5 := fibo2(~n - 2);< 16173#$Ultimate##0 ~n := #in~n; 16177#L20 assume ~n < 1;#res := 0; 16174#fibo2FINAL assume true; 16171#fibo2EXIT >#54#return; 16170#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 16169#fibo1FINAL assume true; 16136#fibo1EXIT >#48#return; 16137#L25-1 call #t~ret7 := fibo1(~n - 2);< 16376#$Ultimate##0 ~n := #in~n; 16417#L10 assume !(~n < 1); 16416#L12 assume !(1 == ~n); 16334#L15 call #t~ret4 := fibo2(~n - 1);< 16333#$Ultimate##0 ~n := #in~n; 16336#L20 assume !(~n < 1); 16391#L22 assume 1 == ~n;#res := 1; 16389#fibo2FINAL assume true; 16387#fibo2EXIT >#52#return; 16224#L15-1 [2023-11-19 07:41:23,408 INFO L750 eck$LassoCheckResult]: Loop: 16224#L15-1 call #t~ret5 := fibo2(~n - 2);< 16233#$Ultimate##0 ~n := #in~n; 16302#L20 assume !(~n < 1); 16349#L22 assume !(1 == ~n); 16258#L25 call #t~ret6 := fibo1(~n - 1);< 16347#$Ultimate##0 ~n := #in~n; 16345#L10 assume !(~n < 1); 16342#L12 assume !(1 == ~n); 16266#L15 call #t~ret4 := fibo2(~n - 1);< 16273#$Ultimate##0 ~n := #in~n; 16300#L20 assume !(~n < 1); 16297#L22 assume 1 == ~n;#res := 1; 16284#fibo2FINAL assume true; 16272#fibo2EXIT >#52#return; 16224#L15-1 [2023-11-19 07:41:23,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:23,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1790184504, now seen corresponding path program 1 times [2023-11-19 07:41:23,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:23,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395174450] [2023-11-19 07:41:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:23,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 07:41:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:41:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 07:41:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395174450] [2023-11-19 07:41:23,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395174450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783620685] [2023-11-19 07:41:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:23,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:23,680 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:23,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-11-19 07:41:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:41:23,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:41:23,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:41:24,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783620685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:24,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2023-11-19 07:41:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78069867] [2023-11-19 07:41:24,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:24,085 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:24,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:24,086 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-19 07:41:24,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:24,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103332475] [2023-11-19 07:41:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:24,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:24,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:24,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:24,284 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:24,284 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:24,284 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:24,284 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:24,284 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:24,284 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:24,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:24,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2023-11-19 07:41:24,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:24,285 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:24,286 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 07:41:24,288 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 07:41:24,291 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 07:41:24,293 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 07:41:24,296 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 07:41:24,298 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 07:41:24,301 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 07:41:24,305 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 07:41:24,308 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 07:41:24,361 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:24,362 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:24,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,365 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2023-11-19 07:41:24,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,409 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 07:41:24,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:24,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,428 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2023-11-19 07:41:24,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,469 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 07:41:24,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:24,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,489 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-19 07:41:24,520 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,521 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 07:41:24,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:24,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,541 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-19 07:41:24,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,564 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 07:41:24,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2023-11-19 07:41:24,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,579 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-19 07:41:24,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,597 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,597 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 07:41:24,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:24,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,621 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-19 07:41:24,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,673 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 07:41:24,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:24,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,699 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-19 07:41:24,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,720 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:41:24,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2023-11-19 07:41:24,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,756 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-19 07:41:24,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,771 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:41:24,771 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 07:41:24,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2023-11-19 07:41:24,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,785 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-19 07:41:24,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:24,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2023-11-19 07:41:24,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,814 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-19 07:41:24,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:24,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:24,829 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:24,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2023-11-19 07:41:24,842 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:24,842 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:24,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:24,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:24,842 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:24,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:24,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:24,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2023-11-19 07:41:24,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:24,843 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:24,843 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 07:41:24,846 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 07:41:24,848 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 07:41:24,850 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 07:41:24,852 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 07:41:24,854 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 07:41:24,856 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 07:41:24,858 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 07:41:24,860 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 07:41:24,911 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:24,911 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:24,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,912 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2023-11-19 07:41:24,914 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 07:41:24,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:24,924 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:24,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:24,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:24,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:24,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:24,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:24,928 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:24,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2023-11-19 07:41:24,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,940 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2023-11-19 07:41:24,942 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 07:41:24,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:24,952 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:24,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:24,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:24,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:24,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:24,952 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:24,953 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:24,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2023-11-19 07:41:24,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,967 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2023-11-19 07:41:24,969 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 07:41:24,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:24,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:24,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:24,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:24,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:24,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:24,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:24,982 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:24,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2023-11-19 07:41:24,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:24,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:24,995 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:24,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2023-11-19 07:41:24,997 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 07:41:25,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:25,007 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:25,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:25,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:25,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:25,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:25,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:25,009 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:25,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2023-11-19 07:41:25,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:25,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:25,021 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:25,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2023-11-19 07:41:25,023 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 07:41:25,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:25,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:25,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:25,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:25,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:25,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:25,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:25,035 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:25,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2023-11-19 07:41:25,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:25,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:25,048 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:25,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2023-11-19 07:41:25,049 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 07:41:25,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:25,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:25,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:25,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:25,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:25,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:25,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:25,062 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:25,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2023-11-19 07:41:25,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:25,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:25,075 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:25,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2023-11-19 07:41:25,076 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 07:41:25,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:25,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:25,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:25,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:25,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:25,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:25,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:25,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:25,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:25,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:25,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:25,103 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:25,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2023-11-19 07:41:25,105 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 07:41:25,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:25,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:25,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:25,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:25,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:25,116 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:25,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:25,118 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:41:25,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:25,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:25,137 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:25,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2023-11-19 07:41:25,139 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 07:41:25,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:25,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:25,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:25,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:25,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:25,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:25,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:25,175 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:25,189 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:41:25,189 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:41:25,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:25,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:25,195 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:25,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2023-11-19 07:41:25,196 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:25,196 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:25,196 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:25,196 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-19 07:41:25,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:25,211 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:25,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:25,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:25,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:25,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:25,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:25,665 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 07:41:25,666 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 07:41:25,666 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134 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 07:41:25,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:26,055 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134. 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 932 states and 1091 transitions. Complement of second has 40 states. [2023-11-19 07:41:26,056 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 07:41:26,056 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 07:41:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 56 transitions. [2023-11-19 07:41:26,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 56 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-19 07:41:26,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:26,058 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:26,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:26,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:26,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:26,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:26,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:26,579 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 07:41:26,580 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 07:41:26,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134 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 07:41:26,877 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134. 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 1128 states and 1301 transitions. Complement of second has 26 states. [2023-11-19 07:41:26,878 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 07:41:26,879 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 07:41:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2023-11-19 07:41:26,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-19 07:41:26,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:26,880 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:26,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:26,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:26,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:27,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:27,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:27,344 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 07:41:27,345 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 07:41:27,345 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134 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 07:41:27,784 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134. 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 2054 states and 2442 transitions. Complement of second has 102 states. [2023-11-19 07:41:27,785 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 07:41:27,785 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 07:41:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2023-11-19 07:41:27,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-19 07:41:27,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:27,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 68 letters. Loop has 14 letters. [2023-11-19 07:41:27,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:27,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 28 letters. [2023-11-19 07:41:27,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:27,788 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2054 states and 2442 transitions. [2023-11-19 07:41:27,810 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 247 [2023-11-19 07:41:27,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2054 states to 1246 states and 1524 transitions. [2023-11-19 07:41:27,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 545 [2023-11-19 07:41:27,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 593 [2023-11-19 07:41:27,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1246 states and 1524 transitions. [2023-11-19 07:41:27,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:27,828 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1246 states and 1524 transitions. [2023-11-19 07:41:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states and 1524 transitions. [2023-11-19 07:41:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1061. [2023-11-19 07:41:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 686 states have (on average 1.1574344023323615) internal successors, (794), 762 states have internal predecessors, (794), 219 states have call successors, (232), 156 states have call predecessors, (232), 156 states have return successors, (259), 142 states have call predecessors, (259), 179 states have call successors, (259) [2023-11-19 07:41:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1285 transitions. [2023-11-19 07:41:27,869 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1061 states and 1285 transitions. [2023-11-19 07:41:27,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 07:41:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:41:27,870 INFO L87 Difference]: Start difference. First operand 1061 states and 1285 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 07:41:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:28,304 INFO L93 Difference]: Finished difference Result 745 states and 889 transitions. [2023-11-19 07:41:28,304 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 745 states and 889 transitions. [2023-11-19 07:41:28,313 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2023-11-19 07:41:28,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 745 states to 569 states and 691 transitions. [2023-11-19 07:41:28,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 319 [2023-11-19 07:41:28,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 343 [2023-11-19 07:41:28,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 569 states and 691 transitions. [2023-11-19 07:41:28,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:28,322 INFO L218 hiAutomatonCegarLoop]: Abstraction has 569 states and 691 transitions. [2023-11-19 07:41:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states and 691 transitions. [2023-11-19 07:41:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 550. [2023-11-19 07:41:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 356 states have (on average 1.1292134831460674) internal successors, (402), 392 states have internal predecessors, (402), 112 states have call successors, (119), 76 states have call predecessors, (119), 82 states have return successors, (146), 81 states have call predecessors, (146), 101 states have call successors, (146) [2023-11-19 07:41:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 667 transitions. [2023-11-19 07:41:28,344 INFO L240 hiAutomatonCegarLoop]: Abstraction has 550 states and 667 transitions. [2023-11-19 07:41:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:41:28,345 INFO L428 stractBuchiCegarLoop]: Abstraction has 550 states and 667 transitions. [2023-11-19 07:41:28,345 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-19 07:41:28,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 550 states and 667 transitions. [2023-11-19 07:41:28,350 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2023-11-19 07:41:28,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:28,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:28,357 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:28,357 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:28,358 INFO L748 eck$LassoCheckResult]: Stem: 23819#$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); 23783#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 := 8; 23784#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 23825#$Ultimate##0 ~n := #in~n; 23893#L10 assume !(~n < 1); 23892#L12 assume !(1 == ~n); 23890#L15 call #t~ret4 := fibo2(~n - 1);< 23891#$Ultimate##0 ~n := #in~n; 23914#L20 assume !(~n < 1); 23913#L22 assume !(1 == ~n); 23901#L25 call #t~ret6 := fibo1(~n - 1);< 23902#$Ultimate##0 ~n := #in~n; 23993#L10 assume !(~n < 1); 23991#L12 assume !(1 == ~n); 23988#L15 call #t~ret4 := fibo2(~n - 1);< 23989#$Ultimate##0 ~n := #in~n; 24065#L20 assume !(~n < 1); 24057#L22 assume !(1 == ~n); 24054#L25 call #t~ret6 := fibo1(~n - 1);< 24055#$Ultimate##0 ~n := #in~n; 24084#L10 assume !(~n < 1); 24083#L12 assume !(1 == ~n); 24081#L15 call #t~ret4 := fibo2(~n - 1);< 24082#$Ultimate##0 ~n := #in~n; 24098#L20 assume !(~n < 1); 24095#L22 assume !(1 == ~n); 24092#L25 call #t~ret6 := fibo1(~n - 1);< 24093#$Ultimate##0 ~n := #in~n; 24128#L10 assume !(~n < 1); 24127#L12 assume !(1 == ~n); 24125#L15 call #t~ret4 := fibo2(~n - 1);< 24126#$Ultimate##0 ~n := #in~n; 24131#L20 assume !(~n < 1); 24130#L22 assume 1 == ~n;#res := 1; 24129#fibo2FINAL assume true; 24124#fibo2EXIT >#52#return; 24122#L15-1 call #t~ret5 := fibo2(~n - 2);< 24123#$Ultimate##0 ~n := #in~n; 24133#L20 assume ~n < 1;#res := 0; 24132#fibo2FINAL assume true; 24121#fibo2EXIT >#54#return; 24119#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 24117#fibo1FINAL assume true; 24091#fibo1EXIT >#48#return; 24088#L25-1 call #t~ret7 := fibo1(~n - 2);< 24089#$Ultimate##0 ~n := #in~n; 24136#L10 assume !(~n < 1); 24135#L12 assume 1 == ~n;#res := 1; 24134#fibo1FINAL assume true; 24087#fibo1EXIT >#50#return; 24086#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 24085#fibo2FINAL assume true; 24080#fibo2EXIT >#52#return; 23746#L15-1 call #t~ret5 := fibo2(~n - 2);< 24064#$Ultimate##0 ~n := #in~n; 24096#L20 assume !(~n < 1); 24094#L22 assume 1 == ~n;#res := 1; 24090#fibo2FINAL assume true; 24078#fibo2EXIT >#54#return; 24062#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 24077#fibo1FINAL assume true; 24053#fibo1EXIT >#48#return; 23944#L25-1 call #t~ret7 := fibo1(~n - 2);< 24052#$Ultimate##0 ~n := #in~n; 24249#L10 assume !(~n < 1); 24248#L12 assume !(1 == ~n); 23973#L15 call #t~ret4 := fibo2(~n - 1);< 24069#$Ultimate##0 [2023-11-19 07:41:28,358 INFO L750 eck$LassoCheckResult]: Loop: 24069#$Ultimate##0 ~n := #in~n; 24120#L20 assume !(~n < 1); 24118#L22 assume !(1 == ~n); 23773#L25 call #t~ret6 := fibo1(~n - 1);< 23769#$Ultimate##0 ~n := #in~n; 24105#L10 assume !(~n < 1); 24102#L12 assume !(1 == ~n); 24060#L15 call #t~ret4 := fibo2(~n - 1);< 24069#$Ultimate##0 [2023-11-19 07:41:28,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash -96157049, now seen corresponding path program 1 times [2023-11-19 07:41:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:28,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273973082] [2023-11-19 07:41:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:28,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:41:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:41:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:28,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273973082] [2023-11-19 07:41:28,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273973082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486895541] [2023-11-19 07:41:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:28,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:28,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:28,769 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:28,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2023-11-19 07:41:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:28,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:41:28,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 07:41:28,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 07:41:29,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486895541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:29,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:29,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2023-11-19 07:41:29,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900740436] [2023-11-19 07:41:29,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:29,220 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:29,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-19 07:41:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074968102] [2023-11-19 07:41:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:29,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:29,223 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:29,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:29,316 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:29,317 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:29,317 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:29,317 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:29,317 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:29,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:29,317 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:29,317 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:29,317 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2023-11-19 07:41:29,317 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:29,318 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:29,319 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 07:41:29,329 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 07:41:29,331 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 07:41:29,333 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 07:41:29,335 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 07:41:29,337 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 07:41:29,339 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 07:41:29,342 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 07:41:29,386 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:29,386 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:29,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:29,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:29,389 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:29,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:29,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:29,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2023-11-19 07:41:29,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:29,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:29,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:29,435 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:29,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:29,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:29,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2023-11-19 07:41:29,555 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:29,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:29,560 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:29,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:29,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:29,561 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:29,561 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:29,561 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:29,561 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:29,561 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:29,561 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2023-11-19 07:41:29,561 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:29,561 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:29,562 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 07:41:29,569 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 07:41:29,572 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 07:41:29,575 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 07:41:29,578 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:29,580 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:29,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:29,584 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 07:41:29,631 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:29,631 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:29,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:29,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:29,634 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:29,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2023-11-19 07:41:29,637 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 07:41:29,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:29,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:29,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:29,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:29,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:29,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:29,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:29,651 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:29,662 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:41:29,662 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:41:29,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:29,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:29,664 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:29,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2023-11-19 07:41:29,665 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:29,665 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:29,665 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:29,665 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-19 07:41:29,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:29,679 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:29,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:29,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:41:29,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:30,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:30,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:30,293 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 07:41:30,294 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 07:41:30,294 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:30,416 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124. 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 575 states and 692 transitions. Complement of second has 15 states. [2023-11-19 07:41:30,416 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 07:41:30,417 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-19 07:41:30,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-19 07:41:30,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:30,418 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:30,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:30,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:41:30,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:30,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:30,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:41:30,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:31,076 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 07:41:31,077 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 07:41:31,077 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:31,213 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124. 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 575 states and 692 transitions. Complement of second has 21 states. [2023-11-19 07:41:31,214 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 07:41:31,214 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2023-11-19 07:41:31,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-19 07:41:31,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:31,215 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:31,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:31,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:41:31,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:31,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:31,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:31,795 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 07:41:31,796 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 07:41:31,797 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:31,941 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124. 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 937 states and 1091 transitions. Complement of second has 27 states. [2023-11-19 07:41:31,941 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 07:41:31,942 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-19 07:41:31,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-19 07:41:31,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:31,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2023-11-19 07:41:31,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:31,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2023-11-19 07:41:31,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:31,944 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 937 states and 1091 transitions. [2023-11-19 07:41:31,953 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-19 07:41:31,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 937 states to 666 states and 790 transitions. [2023-11-19 07:41:31,960 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 348 [2023-11-19 07:41:31,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 378 [2023-11-19 07:41:31,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 666 states and 790 transitions. [2023-11-19 07:41:31,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:31,961 INFO L218 hiAutomatonCegarLoop]: Abstraction has 666 states and 790 transitions. [2023-11-19 07:41:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states and 790 transitions. [2023-11-19 07:41:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 587. [2023-11-19 07:41:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 390 states have (on average 1.123076923076923) internal successors, (438), 423 states have internal predecessors, (438), 115 states have call successors, (122), 83 states have call predecessors, (122), 82 states have return successors, (140), 80 states have call predecessors, (140), 102 states have call successors, (140) [2023-11-19 07:41:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 700 transitions. [2023-11-19 07:41:31,979 INFO L240 hiAutomatonCegarLoop]: Abstraction has 587 states and 700 transitions. [2023-11-19 07:41:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:31,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:41:31,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:41:31,980 INFO L87 Difference]: Start difference. First operand 587 states and 700 transitions. Second operand has 25 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 13 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-19 07:41:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:32,549 INFO L93 Difference]: Finished difference Result 752 states and 952 transitions. [2023-11-19 07:41:32,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 752 states and 952 transitions. [2023-11-19 07:41:32,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-19 07:41:32,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 752 states to 690 states and 870 transitions. [2023-11-19 07:41:32,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 372 [2023-11-19 07:41:32,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 372 [2023-11-19 07:41:32,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 690 states and 870 transitions. [2023-11-19 07:41:32,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:41:32,567 INFO L218 hiAutomatonCegarLoop]: Abstraction has 690 states and 870 transitions. [2023-11-19 07:41:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states and 870 transitions. [2023-11-19 07:41:32,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 639. [2023-11-19 07:41:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 418 states have (on average 1.1196172248803828) internal successors, (468), 452 states have internal predecessors, (468), 127 states have call successors, (135), 85 states have call predecessors, (135), 94 states have return successors, (206), 101 states have call predecessors, (206), 110 states have call successors, (206) [2023-11-19 07:41:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 809 transitions. [2023-11-19 07:41:32,588 INFO L240 hiAutomatonCegarLoop]: Abstraction has 639 states and 809 transitions. [2023-11-19 07:41:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:41:32,589 INFO L428 stractBuchiCegarLoop]: Abstraction has 639 states and 809 transitions. [2023-11-19 07:41:32,589 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-19 07:41:32,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 639 states and 809 transitions. [2023-11-19 07:41:32,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-19 07:41:32,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:41:32,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:41:32,594 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 7, 7, 6, 6, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:32,595 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:32,595 INFO L748 eck$LassoCheckResult]: Stem: 29127#$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); 29097#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 := 8; 29098#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 29133#$Ultimate##0 ~n := #in~n; 29169#L10 assume !(~n < 1); 29167#L12 assume !(1 == ~n); 29164#L15 call #t~ret4 := fibo2(~n - 1);< 29165#$Ultimate##0 ~n := #in~n; 29179#L20 assume !(~n < 1); 29177#L22 assume !(1 == ~n); 29174#L25 call #t~ret6 := fibo1(~n - 1);< 29175#$Ultimate##0 ~n := #in~n; 29189#L10 assume !(~n < 1); 29187#L12 assume !(1 == ~n); 29184#L15 call #t~ret4 := fibo2(~n - 1);< 29185#$Ultimate##0 ~n := #in~n; 29213#L20 assume !(~n < 1); 29211#L22 assume !(1 == ~n); 29208#L25 call #t~ret6 := fibo1(~n - 1);< 29209#$Ultimate##0 ~n := #in~n; 29236#L10 assume !(~n < 1); 29234#L12 assume !(1 == ~n); 29231#L15 call #t~ret4 := fibo2(~n - 1);< 29232#$Ultimate##0 ~n := #in~n; 29249#L20 assume !(~n < 1); 29246#L22 assume !(1 == ~n); 29242#L25 call #t~ret6 := fibo1(~n - 1);< 29243#$Ultimate##0 ~n := #in~n; 29261#L10 assume !(~n < 1); 29259#L12 assume !(1 == ~n); 29255#L15 call #t~ret4 := fibo2(~n - 1);< 29256#$Ultimate##0 ~n := #in~n; 29262#L20 assume !(~n < 1); 29260#L22 assume 1 == ~n;#res := 1; 29258#fibo2FINAL assume true; 29254#fibo2EXIT >#52#return; 29251#L15-1 call #t~ret5 := fibo2(~n - 2);< 29252#$Ultimate##0 ~n := #in~n; 29257#L20 assume ~n < 1;#res := 0; 29253#fibo2FINAL assume true; 29250#fibo2EXIT >#54#return; 29248#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 29245#fibo1FINAL assume true; 29241#fibo1EXIT >#48#return; 29238#L25-1 call #t~ret7 := fibo1(~n - 2);< 29239#$Ultimate##0 ~n := #in~n; 29247#L10 assume !(~n < 1); 29244#L12 assume 1 == ~n;#res := 1; 29240#fibo1FINAL assume true; 29237#fibo1EXIT >#50#return; 29235#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 29233#fibo2FINAL assume true; 29230#fibo2EXIT >#52#return; 29216#L15-1 call #t~ret5 := fibo2(~n - 2);< 29229#$Ultimate##0 ~n := #in~n; 29411#L20 assume !(~n < 1); 29409#L22 assume !(1 == ~n); 29301#L25 call #t~ret6 := fibo1(~n - 1);< 29303#$Ultimate##0 ~n := #in~n; 29427#L10 assume !(~n < 1); 29423#L12 assume !(1 == ~n); 29061#L15 call #t~ret4 := fibo2(~n - 1);< 29420#$Ultimate##0 ~n := #in~n; 29070#L20 assume !(~n < 1); 29060#L22 assume !(1 == ~n); 29064#L25 call #t~ret6 := fibo1(~n - 1);< 29094#$Ultimate##0 ~n := #in~n; 29096#L10 assume !(~n < 1); 29123#L12 assume !(1 == ~n); 29080#L15 [2023-11-19 07:41:32,595 INFO L750 eck$LassoCheckResult]: Loop: 29080#L15 call #t~ret4 := fibo2(~n - 1);< 29641#$Ultimate##0 ~n := #in~n; 29642#L20 assume !(~n < 1); 29677#L22 assume !(1 == ~n); 29095#L25 call #t~ret6 := fibo1(~n - 1);< 29094#$Ultimate##0 ~n := #in~n; 29096#L10 assume !(~n < 1); 29123#L12 assume !(1 == ~n); 29080#L15 [2023-11-19 07:41:32,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash 265386094, now seen corresponding path program 2 times [2023-11-19 07:41:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:32,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8080402] [2023-11-19 07:41:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 07:41:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:41:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:41:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:41:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:41:32,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:32,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8080402] [2023-11-19 07:41:32,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8080402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:32,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497993519] [2023-11-19 07:41:32,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:41:32,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:32,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:32,840 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:32,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2023-11-19 07:41:32,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:41:32,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:41:32,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:41:32,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:41:32,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:41:33,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497993519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:33,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:33,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2023-11-19 07:41:33,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127522549] [2023-11-19 07:41:33,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:33,218 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:41:33,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2023-11-19 07:41:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719332379] [2023-11-19 07:41:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:33,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:41:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:41:33,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:41:33,376 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:33,376 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:33,376 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:33,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:33,376 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:41:33,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:33,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:33,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2023-11-19 07:41:33,376 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:33,376 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:33,377 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 07:41:33,388 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 07:41:33,390 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 07:41:33,393 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 07:41:33,395 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 07:41:33,397 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 07:41:33,399 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 07:41:33,401 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 07:41:33,460 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:33,460 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:41:33,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,462 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2023-11-19 07:41:33,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:41:33,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:33,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Ended with exit code 0 [2023-11-19 07:41:33,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:33,495 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:33,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2023-11-19 07:41:33,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:41:33,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:41:35,969 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:41:35,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:35,973 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:41:35,973 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:41:35,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:41:35,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:41:35,973 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:41:35,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:35,974 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:41:35,974 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:41:35,974 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2023-11-19 07:41:35,974 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:41:35,974 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:41:35,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:35,984 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 07:41:35,986 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 07:41:35,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:35,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:35,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:41:36,000 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 07:41:36,003 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 07:41:36,074 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:41:36,074 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:41:36,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:36,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:36,075 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:36,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2023-11-19 07:41:36,078 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 07:41:36,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:41:36,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:41:36,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:41:36,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:41:36,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:41:36,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:41:36,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:41:36,092 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:41:36,095 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:41:36,095 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:41:36,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:41:36,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:36,096 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:36,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2023-11-19 07:41:36,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:41:36,097 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:41:36,097 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:41:36,098 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-19 07:41:36,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:36,117 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:41:36,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:36,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:41:36,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:36,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:36,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:36,618 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 07:41:36,619 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 07:41:36,619 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176 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 07:41:36,734 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176. 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 670 states and 840 transitions. Complement of second has 19 states. [2023-11-19 07:41:36,734 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 07:41:36,738 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 07:41:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2023-11-19 07:41:36,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-19 07:41:36,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:36,739 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:36,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:36,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:41:36,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:37,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:37,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:37,321 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 07:41:37,322 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 07:41:37,322 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176 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 07:41:37,492 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176. 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 670 states and 840 transitions. Complement of second has 21 states. [2023-11-19 07:41:37,493 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 07:41:37,494 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 07:41:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2023-11-19 07:41:37,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-19 07:41:37,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:37,495 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:41:37,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:41:37,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:37,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:41:37,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:38,048 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 07:41:38,049 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 07:41:38,049 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176 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 07:41:38,204 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176. 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 1252 states and 1531 transitions. Complement of second has 33 states. [2023-11-19 07:41:38,205 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 07:41:38,206 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 07:41:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-19 07:41:38,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-19 07:41:38,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:38,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2023-11-19 07:41:38,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:38,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2023-11-19 07:41:38,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:41:38,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1252 states and 1531 transitions. [2023-11-19 07:41:38,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:41:38,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1252 states to 0 states and 0 transitions. [2023-11-19 07:41:38,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:41:38,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:41:38,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:41:38,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:38,224 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:38,224 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:41:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:41:38,226 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 12 states have internal predecessors, (46), 10 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:38,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:38,226 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-19 07:41:38,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-19 07:41:38,226 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:41:38,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:41:38,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:41:38,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:41:38,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:41:38,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:38,227 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:38,227 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:41:38,228 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:41:38,228 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-19 07:41:38,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:41:38,228 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:41:38,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:41:38,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:41:38 BoogieIcfgContainer [2023-11-19 07:41:38,237 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:41:38,237 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:41:38,238 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:41:38,238 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:41:38,239 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:03" (3/4) ... [2023-11-19 07:41:38,241 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:41:38,242 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:41:38,243 INFO L158 Benchmark]: Toolchain (without parser) took 35007.55ms. Allocated memory was 127.9MB in the beginning and 293.6MB in the end (delta: 165.7MB). Free memory was 83.3MB in the beginning and 156.4MB in the end (delta: -73.0MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. [2023-11-19 07:41:38,243 INFO L158 Benchmark]: CDTParser took 0.83ms. Allocated memory is still 127.9MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:38,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.60ms. Allocated memory is still 127.9MB. Free memory was 83.1MB in the beginning and 72.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:41:38,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.43ms. Allocated memory is still 127.9MB. Free memory was 72.8MB in the beginning and 71.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:38,244 INFO L158 Benchmark]: Boogie Preprocessor took 24.23ms. Allocated memory is still 127.9MB. Free memory was 71.5MB in the beginning and 70.5MB in the end (delta: 958.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:38,245 INFO L158 Benchmark]: RCFGBuilder took 425.67ms. Allocated memory is still 127.9MB. Free memory was 70.5MB in the beginning and 60.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:41:38,245 INFO L158 Benchmark]: BuchiAutomizer took 34259.58ms. Allocated memory was 127.9MB in the beginning and 293.6MB in the end (delta: 165.7MB). Free memory was 60.7MB in the beginning and 157.4MB in the end (delta: -96.7MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2023-11-19 07:41:38,245 INFO L158 Benchmark]: Witness Printer took 4.58ms. Allocated memory is still 293.6MB. Free memory was 157.4MB in the beginning and 156.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:38,248 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83ms. Allocated memory is still 127.9MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.60ms. Allocated memory is still 127.9MB. Free memory was 83.1MB in the beginning and 72.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.43ms. Allocated memory is still 127.9MB. Free memory was 72.8MB in the beginning and 71.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.23ms. Allocated memory is still 127.9MB. Free memory was 71.5MB in the beginning and 70.5MB in the end (delta: 958.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.67ms. Allocated memory is still 127.9MB. Free memory was 70.5MB in the beginning and 60.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 34259.58ms. Allocated memory was 127.9MB in the beginning and 293.6MB in the end (delta: 165.7MB). Free memory was 60.7MB in the beginning and 157.4MB in the end (delta: -96.7MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. * Witness Printer took 4.58ms. Allocated memory is still 293.6MB. Free memory was 157.4MB in the beginning and 156.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 16 terminating modules (9 trivial, 3 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 deterministic module has affine ranking function n and consists of 13 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 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 9 modules have a trivial ranking function, the largest among these consists of 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 34.1s and 11 iterations. TraceHistogramMax:12. Analysis of lassos took 18.0s. Construction of modules took 3.3s. Büchi inclusion checks took 12.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 14. Automata minimization 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 727 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1430 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1385 mSDsluCounter, 2522 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1982 mSDsCounter, 827 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4196 IncrementalHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 827 mSolverCounterUnsat, 540 mSDtfsCounter, 4196 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp81 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf92 smp74 dnf100 smp100 tf113 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 57ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 34 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.1s 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 07:41:38,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:38,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2023-11-19 07:41:38,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-11-19 07:41:38,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-19 07:41:39,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-19 07:41:39,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-19 07:41:39,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-19 07:41:39,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-19 07:41:39,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-19 07:41:40,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:40,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b3ef38-aaa8-4ac9-a953-0e01ff4e46cd/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