./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 e7bb482b 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_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/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_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:15:49,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:15:49,333 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:15:49,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:15:49,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:15:49,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:15:49,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:15:49,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:15:49,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:15:49,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:15:49,408 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:15:49,408 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:15:49,409 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:15:49,411 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:15:49,412 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:15:49,412 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:15:49,413 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:15:49,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:15:49,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:15:49,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:15:49,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:15:49,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:15:49,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:15:49,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:15:49,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:15:49,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:15:49,420 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:15:49,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:15:49,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:15:49,421 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:15:49,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:15:49,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:15:49,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:15:49,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:15:49,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:15:49,425 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:15:49,426 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_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2023-11-06 22:15:49,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:15:49,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:15:49,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:15:49,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:15:49,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:15:49,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2023-11-06 22:15:53,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:15:53,463 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:15:53,464 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2023-11-06 22:15:53,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/data/8948a9cf9/5f4e8841e0db499a9e4d79891bf09398/FLAGe0fb0fb03 [2023-11-06 22:15:53,493 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/data/8948a9cf9/5f4e8841e0db499a9e4d79891bf09398 [2023-11-06 22:15:53,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:15:53,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:15:53,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:53,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:15:53,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:15:53,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb875b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53, skipping insertion in model container [2023-11-06 22:15:53,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:15:53,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:15:53,807 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:15:53,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:15:53,886 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:15:53,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53 WrapperNode [2023-11-06 22:15:53,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:53,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:15:53,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:15:53,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:15:53,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,933 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-06 22:15:53,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:15:53,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:15:53,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:15:53,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:15:53,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:53,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:15:53,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:15:53,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:15:53,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:15:53,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (1/1) ... [2023-11-06 22:15:54,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:54,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:54,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:54,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:15:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:15:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:15:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-06 22:15:54,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-06 22:15:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-06 22:15:54,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-06 22:15:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:15:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:15:54,175 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:15:54,177 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:15:54,328 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:15:54,335 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:15:54,335 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:15:54,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:54 BoogieIcfgContainer [2023-11-06 22:15:54,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:15:54,340 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:15:54,340 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:15:54,345 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:15:54,346 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:15:54,347 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:15:53" (1/3) ... [2023-11-06 22:15:54,348 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@831aff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:15:54, skipping insertion in model container [2023-11-06 22:15:54,348 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:15:54,349 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53" (2/3) ... [2023-11-06 22:15:54,349 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@831aff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:15:54, skipping insertion in model container [2023-11-06 22:15:54,350 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:15:54,350 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:54" (3/3) ... [2023-11-06 22:15:54,351 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2023-11-06 22:15:54,444 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:15:54,444 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:15:54,444 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:15:54,444 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:15:54,445 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:15:54,445 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:15:54,445 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:15:54,445 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:15:54,450 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) [2023-11-06 22:15:54,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:15:54,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:15:54,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:15:54,488 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:15:54,489 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:54,489 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:15:54,489 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) [2023-11-06 22:15:54,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:15:54,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:15:54,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:15:54,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:15:54,495 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:54,503 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 [2023-11-06 22:15:54,504 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 [2023-11-06 22:15:54,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-06 22:15:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334587713] [2023-11-06 22:15:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:54,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:15:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:54,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:15:54,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-06 22:15:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:54,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972729599] [2023-11-06 22:15:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:54,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:54,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:15:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:54,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:15:54,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-06 22:15:54,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:54,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006832275] [2023-11-06 22:15:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:54,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:54,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:15:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:54,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:15:55,124 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:15:55,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:15:55,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:15:55,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:15:55,126 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:15:55,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:15:55,127 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:15:55,127 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2023-11-06 22:15:55,127 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:15:55,127 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:15:55,149 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,163 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,170 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,183 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,193 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,199 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:15:55,341 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:15:55,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 22:15:55,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:55,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:55,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 22:15:55,450 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:55,450 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:55,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 22:15:55,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,478 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:55,478 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:55,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 22:15:55,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,533 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:55,533 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:55,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 22:15:55,581 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:55,582 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:55,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 22:15:55,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:55,621 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:55,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 22:15:55,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:55,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:55,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 22:15:55,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:55,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 22:15:55,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:15:55,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:55,782 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:15:55,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:55,786 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:15:55,787 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:15:55,787 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:15:55,787 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:15:55,787 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:15:55,787 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,787 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:15:55,787 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:15:55,787 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2023-11-06 22:15:55,787 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:15:55,788 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:15:55,789 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,806 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,820 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:55,938 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:15:55,943 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:15:55,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,961 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 [2023-11-06 22:15:55,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 22:15:55,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:55,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:55,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:55,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:55,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:55,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:55,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:55,988 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:55,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-06 22:15:55,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:55,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:55,994 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:55,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 22:15:55,998 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 [2023-11-06 22:15:56,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:56,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:56,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:56,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:56,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:56,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:56,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:56,015 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:56,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:56,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:56,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:56,023 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:56,034 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 [2023-11-06 22:15:56,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 22:15:56,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:56,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:56,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:56,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:56,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:56,052 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:56,052 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:56,061 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:56,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:56,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:56,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:56,074 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:56,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:15:56,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 22:15:56,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:56,103 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:56,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:56,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:56,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:56,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:56,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:56,120 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:56,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:56,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:56,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:56,132 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:56,136 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 [2023-11-06 22:15:56,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 22:15:56,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:56,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:56,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:56,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:56,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:56,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:56,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:56,165 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:56,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:56,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:56,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:56,181 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:56,187 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 [2023-11-06 22:15:56,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 22:15:56,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:56,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:56,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:56,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:56,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:56,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:56,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:56,215 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:15:56,220 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:15:56,221 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:15:56,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:56,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:56,256 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:56,269 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:15:56,269 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:15:56,269 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:15:56,270 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-06 22:15:56,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 22:15:56,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:56,282 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:15:56,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:56,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:56,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:15:56,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:56,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:15:56,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:56,635 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 [2023-11-06 22:15:56,637 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) [2023-11-06 22:15:56,866 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. [2023-11-06 22:15:56,868 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 [2023-11-06 22:15:56,873 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) [2023-11-06 22:15:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-06 22:15:56,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-06 22:15:56,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:15:56,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-06 22:15:56,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:15:56,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-06 22:15:56,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:15:56,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-06 22:15:56,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:15:56,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-06 22:15:56,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-06 22:15:56,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-06 22:15:56,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-06 22:15:56,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:15:56,898 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-06 22:15:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-06 22:15:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-06 22:15:56,929 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) [2023-11-06 22:15:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-06 22:15:56,932 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-06 22:15:56,932 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-06 22:15:56,932 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:15:56,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-06 22:15:56,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:15:56,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:15:56,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:15:56,936 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:56,936 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:56,936 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#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-06 22:15:56,936 INFO L750 eck$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 [2023-11-06 22:15:56,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-06 22:15:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:56,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989148164] [2023-11-06 22:15:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:56,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:15:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:15:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:57,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989148164] [2023-11-06 22:15:57,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989148164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:57,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:57,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:15:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153413114] [2023-11-06 22:15:57,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:57,122 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:15:57,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-06 22:15:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320905239] [2023-11-06 22:15:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:15:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:15:57,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:57,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320905239] [2023-11-06 22:15:57,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320905239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:57,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:57,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:15:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168895064] [2023-11-06 22:15:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:57,216 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:15:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:57,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:15:57,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:15:57,221 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) [2023-11-06 22:15:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:57,308 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-06 22:15:57,308 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-06 22:15:57,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:15:57,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-06 22:15:57,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-06 22:15:57,317 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-06 22:15:57,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-06 22:15:57,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:15:57,318 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-06 22:15:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-06 22:15:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-06 22:15:57,326 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) [2023-11-06 22:15:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-06 22:15:57,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-06 22:15:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:15:57,329 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-06 22:15:57,329 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:15:57,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-06 22:15:57,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:15:57,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:15:57,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:15:57,332 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:57,333 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:57,333 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 [2023-11-06 22:15:57,333 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 [2023-11-06 22:15:57,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-06 22:15:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:57,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409165360] [2023-11-06 22:15:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:15:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409165360] [2023-11-06 22:15:57,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409165360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918275244] [2023-11-06 22:15:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:57,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:57,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:57,517 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:57,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:15:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:57,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:15:57,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:57,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:15:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:57,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918275244] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:15:57,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:15:57,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-06 22:15:57,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819447651] [2023-11-06 22:15:57,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:15:57,869 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:15:57,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-06 22:15:57,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:57,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396263631] [2023-11-06 22:15:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:57,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:57,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:15:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:15:57,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:15:58,163 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:15:58,164 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:15:58,164 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:15:58,164 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:15:58,164 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:15:58,164 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,164 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:15:58,165 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:15:58,165 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2023-11-06 22:15:58,165 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:15:58,165 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:15:58,166 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,171 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,184 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,196 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,271 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:15:58,271 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:15:58,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:58,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:58,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 22:15:58,307 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:58,307 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:58,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,312 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 22:15:58,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:58,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:58,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:58,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:58,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-06 22:15:58,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,338 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 22:15:58,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:58,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:58,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:58,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:58,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,368 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-06 22:15:58,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:58,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:58,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:58,390 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:58,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,395 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-06 22:15:58,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:58,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:58,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:15:58,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:15:58,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-06 22:15:58,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,417 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:15:58,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:58,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-06 22:15:58,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-06 22:15:58,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,472 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-06 22:15:58,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:15:58,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:15:58,516 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:15:58,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,522 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:15:58,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:15:58,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:15:58,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:15:58,522 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:15:58,522 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,522 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:15:58,522 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:15:58,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2023-11-06 22:15:58,523 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:15:58,523 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:15:58,524 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,528 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,530 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,557 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:15:58,624 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:15:58,624 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:15:58,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,629 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-06 22:15:58,648 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 [2023-11-06 22:15:58,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:58,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:58,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:58,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:58,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:58,664 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:58,664 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:58,680 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:58,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,686 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,693 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:15:58,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-06 22:15:58,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:58,707 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:58,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:58,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:58,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:58,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:58,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:58,718 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:58,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,728 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-06 22:15:58,733 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:15:58,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:58,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:58,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:58,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:58,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:58,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:58,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:58,776 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:58,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,781 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,789 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 [2023-11-06 22:15:58,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:58,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:58,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:58,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:58,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:58,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:58,804 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:58,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 22:15:58,808 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:15:58,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-06 22:15:58,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,812 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 22:15:58,815 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 [2023-11-06 22:15:58,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:15:58,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:15:58,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:15:58,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:15:58,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:15:58,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:15:58,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:15:58,834 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:15:58,840 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:15:58,840 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:15:58,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:15:58,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:58,845 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:15:58,853 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:15:58,853 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:15:58,853 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:15:58,853 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-06 22:15:58,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 22:15:58,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:58,862 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:15:58,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:58,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:15:58,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:59,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:15:59,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:59,242 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 [2023-11-06 22:15:59,243 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) [2023-11-06 22:15:59,841 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. [2023-11-06 22:15:59,842 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 [2023-11-06 22:15:59,843 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) [2023-11-06 22:15:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-06 22:15:59,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-06 22:15:59,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:15:59,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-06 22:15:59,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:15:59,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-06 22:15:59,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:15:59,848 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-06 22:15:59,863 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:15:59,875 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-06 22:15:59,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-06 22:15:59,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-06 22:15:59,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-06 22:15:59,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:15:59,886 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-06 22:15:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-06 22:15:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-06 22:15:59,905 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) [2023-11-06 22:15:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-06 22:15:59,909 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-06 22:15:59,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:15:59,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:15:59,910 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) [2023-11-06 22:16:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:00,241 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2023-11-06 22:16:00,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2023-11-06 22:16:00,248 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:16:00,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2023-11-06 22:16:00,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2023-11-06 22:16:00,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2023-11-06 22:16:00,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2023-11-06 22:16:00,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:00,257 INFO L218 hiAutomatonCegarLoop]: Abstraction has 204 states and 272 transitions. [2023-11-06 22:16:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2023-11-06 22:16:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2023-11-06 22:16:00,277 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) [2023-11-06 22:16:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2023-11-06 22:16:00,281 INFO L240 hiAutomatonCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-06 22:16:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:16:00,282 INFO L428 stractBuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-06 22:16:00,282 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:16:00,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2023-11-06 22:16:00,286 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:16:00,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:00,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:00,288 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] [2023-11-06 22:16:00,288 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:00,289 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 [2023-11-06 22:16:00,289 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 [2023-11-06 22:16:00,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-06 22:16:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881146854] [2023-11-06 22:16:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:16:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:16:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:16:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:16:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:00,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881146854] [2023-11-06 22:16:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881146854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:00,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382611622] [2023-11-06 22:16:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:00,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:00,509 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:00,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:16:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:00,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:16:00,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:00,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:16:00,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:16:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382611622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:01,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:01,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2023-11-06 22:16:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440446090] [2023-11-06 22:16:01,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:01,428 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:16:01,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-06 22:16:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:01,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914863645] [2023-11-06 22:16:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:01,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:01,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:01,586 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:01,587 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:01,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:01,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:01,587 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:16:01,587 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:01,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:01,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2023-11-06 22:16:01,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:01,588 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:01,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,592 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,594 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,598 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,600 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,605 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:01,675 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:01,675 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:16:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,678 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:01,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:01,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-06 22:16:01,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:01,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:01,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:01,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,742 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:01,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:01,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-06 22:16:01,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:01,781 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:01,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:01,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,790 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:01,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:01,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-06 22:16:01,819 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:01,819 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:01,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:01,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,829 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:01,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:01,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-06 22:16:01,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:01,855 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:01,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:01,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,865 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-06 22:16:01,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:01,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:01,900 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:01,901 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:01,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:01,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,907 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:01,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:01,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-06 22:16:01,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:01,928 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:01,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:01,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,934 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-06 22:16:01,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:01,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:01,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-06 22:16:01,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:01,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:01,958 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:01,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-06 22:16:01,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:16:01,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:02,058 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:16:02,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:02,065 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:02,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:02,065 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:02,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:02,065 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:16:02,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:02,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:02,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2023-11-06 22:16:02,065 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:02,065 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:02,066 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,072 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,074 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,076 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,078 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,083 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,085 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:02,158 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:02,159 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:16:02,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,160 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-06 22:16:02,165 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 [2023-11-06 22:16:02,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,179 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:02,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-06 22:16:02,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,183 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,197 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 [2023-11-06 22:16:02,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-06 22:16:02,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,228 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:02,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:02,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,239 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-06 22:16:02,243 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 [2023-11-06 22:16:02,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,272 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:02,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:02,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,285 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,293 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 [2023-11-06 22:16:02,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-06 22:16:02,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,332 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:02,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-06 22:16:02,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,341 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-06 22:16:02,345 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:16:02,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:02,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-06 22:16:02,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,363 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-06 22:16:02,367 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 [2023-11-06 22:16:02,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,382 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:02,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2023-11-06 22:16:02,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,386 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-06 22:16:02,393 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 [2023-11-06 22:16:02,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,412 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:02,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-06 22:16:02,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,420 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-06 22:16:02,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:16:02,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:02,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:02,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:02,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:02,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:02,440 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:02,440 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:02,443 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:16:02,446 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:16:02,447 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:16:02,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:02,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,451 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-06 22:16:02,452 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:16:02,452 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:16:02,452 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:16:02,452 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-06 22:16:02,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-06 22:16:02,456 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:16:02,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:02,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:16:02,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:02,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2023-11-06 22:16:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:03,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:03,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:03,141 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 [2023-11-06 22:16:03,142 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) [2023-11-06 22:16:03,368 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. [2023-11-06 22:16:03,369 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 [2023-11-06 22:16:03,370 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) [2023-11-06 22:16:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-06 22:16:03,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-06 22:16:03,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:03,372 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:03,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:03,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:16:03,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:03,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:03,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:03,948 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 [2023-11-06 22:16:03,948 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) [2023-11-06 22:16:04,175 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. [2023-11-06 22:16:04,177 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 [2023-11-06 22:16:04,180 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) [2023-11-06 22:16:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-06 22:16:04,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-06 22:16:04,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:04,183 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:04,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:04,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:16:04,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:04,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:04,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:04,804 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 [2023-11-06 22:16:04,805 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) [2023-11-06 22:16:05,038 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. [2023-11-06 22:16:05,039 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 [2023-11-06 22:16:05,041 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) [2023-11-06 22:16:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-06 22:16:05,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-06 22:16:05,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:05,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-06 22:16:05,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:05,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-06 22:16:05,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:05,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2023-11-06 22:16:05,063 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-06 22:16:05,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2023-11-06 22:16:05,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2023-11-06 22:16:05,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2023-11-06 22:16:05,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2023-11-06 22:16:05,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:05,085 INFO L218 hiAutomatonCegarLoop]: Abstraction has 476 states and 676 transitions. [2023-11-06 22:16:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2023-11-06 22:16:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2023-11-06 22:16:05,126 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) [2023-11-06 22:16:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2023-11-06 22:16:05,132 INFO L240 hiAutomatonCegarLoop]: Abstraction has 401 states and 544 transitions. [2023-11-06 22:16:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:16:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:16:05,134 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) [2023-11-06 22:16:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:05,723 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2023-11-06 22:16:05,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2023-11-06 22:16:05,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:16:05,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2023-11-06 22:16:05,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2023-11-06 22:16:05,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2023-11-06 22:16:05,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2023-11-06 22:16:05,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:05,740 INFO L218 hiAutomatonCegarLoop]: Abstraction has 457 states and 645 transitions. [2023-11-06 22:16:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2023-11-06 22:16:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2023-11-06 22:16:05,759 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) [2023-11-06 22:16:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2023-11-06 22:16:05,763 INFO L240 hiAutomatonCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-06 22:16:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:16:05,765 INFO L428 stractBuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-06 22:16:05,765 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:16:05,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2023-11-06 22:16:05,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:16:05,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:05,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:05,774 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:05,774 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] [2023-11-06 22:16:05,774 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 [2023-11-06 22:16:05,775 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 [2023-11-06 22:16:05,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1086211661, now seen corresponding path program 1 times [2023-11-06 22:16:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091137220] [2023-11-06 22:16:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:16:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:16:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:06,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:06,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091137220] [2023-11-06 22:16:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091137220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041027906] [2023-11-06 22:16:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:06,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:06,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:06,061 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:06,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-06 22:16:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:16:06,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:06,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:06,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041027906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:06,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2023-11-06 22:16:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434305077] [2023-11-06 22:16:06,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:06,487 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:16:06,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1084313501, now seen corresponding path program 1 times [2023-11-06 22:16:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:06,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351133388] [2023-11-06 22:16:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:16:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:16:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:16:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:16:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 22:16:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:16:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:16:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-06 22:16:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351133388] [2023-11-06 22:16:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351133388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:06,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195974303] [2023-11-06 22:16:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:06,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:06,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:06,837 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:06,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-06 22:16:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:16:06,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2023-11-06 22:16:06,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-06 22:16:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195974303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:07,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-06 22:16:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440105947] [2023-11-06 22:16:07,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:07,309 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:16:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:07,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:16:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:16:07,310 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) [2023-11-06 22:16:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:07,686 INFO L93 Difference]: Finished difference Result 436 states and 604 transitions. [2023-11-06 22:16:07,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 436 states and 604 transitions. [2023-11-06 22:16:07,694 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:16:07,702 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 436 states to 431 states and 597 transitions. [2023-11-06 22:16:07,702 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 231 [2023-11-06 22:16:07,702 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 231 [2023-11-06 22:16:07,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 431 states and 597 transitions. [2023-11-06 22:16:07,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:07,703 INFO L218 hiAutomatonCegarLoop]: Abstraction has 431 states and 597 transitions. [2023-11-06 22:16:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states and 597 transitions. [2023-11-06 22:16:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2023-11-06 22:16:07,719 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) [2023-11-06 22:16:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 576 transitions. [2023-11-06 22:16:07,724 INFO L240 hiAutomatonCegarLoop]: Abstraction has 425 states and 576 transitions. [2023-11-06 22:16:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:16:07,725 INFO L428 stractBuchiCegarLoop]: Abstraction has 425 states and 576 transitions. [2023-11-06 22:16:07,725 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:16:07,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 425 states and 576 transitions. [2023-11-06 22:16:07,729 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:16:07,730 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:07,730 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:07,732 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] [2023-11-06 22:16:07,733 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] [2023-11-06 22:16:07,733 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 [2023-11-06 22:16:07,733 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 [2023-11-06 22:16:07,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash 138509055, now seen corresponding path program 1 times [2023-11-06 22:16:07,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:07,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139379232] [2023-11-06 22:16:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:07,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:16:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:16:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:16:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139379232] [2023-11-06 22:16:08,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139379232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046864664] [2023-11-06 22:16:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:08,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:08,171 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:08,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-06 22:16:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:16:08,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:16:08,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:16:08,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046864664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:08,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:08,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2023-11-06 22:16:08,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399121040] [2023-11-06 22:16:08,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:08,735 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:16:08,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-06 22:16:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:08,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908531087] [2023-11-06 22:16:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:08,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:16:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:16:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:16:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:16:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 22:16:09,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:09,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908531087] [2023-11-06 22:16:09,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908531087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929296314] [2023-11-06 22:16:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:09,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:09,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:09,051 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:09,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-06 22:16:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:09,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:16:09,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 22:16:09,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 22:16:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929296314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:09,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-06 22:16:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535116447] [2023-11-06 22:16:09,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:09,908 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:16:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:16:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:16:09,910 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) [2023-11-06 22:16:10,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:10,429 INFO L93 Difference]: Finished difference Result 456 states and 630 transitions. [2023-11-06 22:16:10,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 456 states and 630 transitions. [2023-11-06 22:16:10,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:16:10,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 456 states to 456 states and 630 transitions. [2023-11-06 22:16:10,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 251 [2023-11-06 22:16:10,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 251 [2023-11-06 22:16:10,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 456 states and 630 transitions. [2023-11-06 22:16:10,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:10,451 INFO L218 hiAutomatonCegarLoop]: Abstraction has 456 states and 630 transitions. [2023-11-06 22:16:10,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states and 630 transitions. [2023-11-06 22:16:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 438. [2023-11-06 22:16:10,469 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) [2023-11-06 22:16:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 592 transitions. [2023-11-06 22:16:10,474 INFO L240 hiAutomatonCegarLoop]: Abstraction has 438 states and 592 transitions. [2023-11-06 22:16:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:16:10,475 INFO L428 stractBuchiCegarLoop]: Abstraction has 438 states and 592 transitions. [2023-11-06 22:16:10,475 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 22:16:10,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 438 states and 592 transitions. [2023-11-06 22:16:10,480 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:16:10,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:10,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:10,482 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] [2023-11-06 22:16:10,482 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:10,482 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#$Ultimate##0 ~n := #in~n; 9945#L10 assume ~n < 1;#res := 0; 9946#fibo1FINAL assume true; 10011#fibo1EXIT >#50#return; 9940#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 10006#fibo2FINAL assume true; 9949#fibo2EXIT >#52#return; 9863#L15-1 [2023-11-06 22:16:10,482 INFO L750 eck$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 [2023-11-06 22:16:10,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash -377478758, now seen corresponding path program 1 times [2023-11-06 22:16:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:10,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131569727] [2023-11-06 22:16:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:10,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:16:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:10,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:16:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131569727] [2023-11-06 22:16:10,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131569727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903222723] [2023-11-06 22:16:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:10,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:10,835 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:10,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-06 22:16:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:10,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:16:10,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:16:11,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:16:11,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903222723] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:11,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:11,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2023-11-06 22:16:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935872001] [2023-11-06 22:16:11,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:11,526 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:16:11,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2023-11-06 22:16:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28004320] [2023-11-06 22:16:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:11,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:11,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:11,890 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:11,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:11,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:11,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:11,890 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:16:11,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:11,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:11,890 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:11,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2023-11-06 22:16:11,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:11,891 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:11,892 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,894 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,907 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,916 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:11,976 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:11,976 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:16:11,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:11,980 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:11,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:11,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-06 22:16:12,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,011 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,018 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-06 22:16:12,052 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,053 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,058 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-06 22:16:12,092 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,093 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,097 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-06 22:16:12,124 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,125 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,131 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-06 22:16:12,157 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,157 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,165 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-06 22:16:12,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,193 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,198 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-06 22:16:12,214 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,214 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2023-11-06 22:16:12,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,218 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-06 22:16:12,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,237 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:12,237 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:12,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,241 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-06 22:16:12,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:12,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,260 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:16:12,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:12,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-06 22:16:12,278 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:16:12,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2023-11-06 22:16:12,281 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:12,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:12,281 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:12,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:12,281 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:16:12,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:12,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:12,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2023-11-06 22:16:12,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:12,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:12,282 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,285 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,287 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,291 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,304 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,307 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:12,363 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:12,364 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:16:12,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,366 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-06 22:16:12,369 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 [2023-11-06 22:16:12,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:12,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:12,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:12,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:12,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:12,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:12,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:12,381 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:12,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2023-11-06 22:16:12,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,384 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-06 22:16:12,387 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 [2023-11-06 22:16:12,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:12,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:12,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:12,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:12,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:12,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:12,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:12,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:12,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2023-11-06 22:16:12,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,403 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-06 22:16:12,409 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 [2023-11-06 22:16:12,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:12,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:12,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:12,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:12,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:12,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:12,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:12,447 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:12,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,453 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-06 22:16:12,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:16:12,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:12,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:12,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:12,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:12,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:12,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:12,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:12,469 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:12,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,473 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-06 22:16:12,476 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 [2023-11-06 22:16:12,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:12,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:12,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:12,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:12,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:12,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:12,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:12,489 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:12,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-06 22:16:12,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,493 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-06 22:16:12,495 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 [2023-11-06 22:16:12,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:12,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:12,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:12,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:12,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:12,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:12,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:12,532 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:12,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,539 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,545 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 [2023-11-06 22:16:12,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-06 22:16:12,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:12,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:12,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:12,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:12,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:12,558 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:12,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:12,568 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:16:12,572 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:16:12,572 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:16:12,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:12,579 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:12,581 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:16:12,581 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:16:12,581 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:16:12,581 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:16:12,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-06 22:16:12,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:12,586 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:16:12,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:12,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:16:12,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:12,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:16:12,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:16:13,211 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 [2023-11-06 22:16:13,211 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) [2023-11-06 22:16:13,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2023-11-06 22:16:13,831 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. [2023-11-06 22:16:13,832 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 [2023-11-06 22:16:13,832 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) [2023-11-06 22:16:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2023-11-06 22:16:13,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 26 letters. [2023-11-06 22:16:13,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:13,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 74 letters. Loop has 26 letters. [2023-11-06 22:16:13,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:13,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 52 letters. [2023-11-06 22:16:13,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:13,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1825 states and 2492 transitions. [2023-11-06 22:16:13,882 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 143 [2023-11-06 22:16:13,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1825 states to 1659 states and 2309 transitions. [2023-11-06 22:16:13,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 586 [2023-11-06 22:16:13,920 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 620 [2023-11-06 22:16:13,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1659 states and 2309 transitions. [2023-11-06 22:16:13,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:13,925 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1659 states and 2309 transitions. [2023-11-06 22:16:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states and 2309 transitions. [2023-11-06 22:16:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1574. [2023-11-06 22:16:13,999 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) [2023-11-06 22:16:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2190 transitions. [2023-11-06 22:16:14,016 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1574 states and 2190 transitions. [2023-11-06 22:16:14,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:16:14,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:16:14,018 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) [2023-11-06 22:16:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:14,794 INFO L93 Difference]: Finished difference Result 1762 states and 2206 transitions. [2023-11-06 22:16:14,794 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1762 states and 2206 transitions. [2023-11-06 22:16:14,818 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 147 [2023-11-06 22:16:14,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1762 states to 769 states and 919 transitions. [2023-11-06 22:16:14,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 423 [2023-11-06 22:16:14,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 423 [2023-11-06 22:16:14,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 769 states and 919 transitions. [2023-11-06 22:16:14,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:14,830 INFO L218 hiAutomatonCegarLoop]: Abstraction has 769 states and 919 transitions. [2023-11-06 22:16:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states and 919 transitions. [2023-11-06 22:16:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 647. [2023-11-06 22:16:14,848 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) [2023-11-06 22:16:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 767 transitions. [2023-11-06 22:16:14,851 INFO L240 hiAutomatonCegarLoop]: Abstraction has 647 states and 767 transitions. [2023-11-06 22:16:14,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-06 22:16:14,852 INFO L428 stractBuchiCegarLoop]: Abstraction has 647 states and 767 transitions. [2023-11-06 22:16:14,853 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 22:16:14,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 647 states and 767 transitions. [2023-11-06 22:16:14,858 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 104 [2023-11-06 22:16:14,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:14,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:14,859 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] [2023-11-06 22:16:14,859 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:14,860 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#$Ultimate##0 ~n := #in~n; 16336#L20 assume !(~n < 1); 16391#L22 assume 1 == ~n;#res := 1; 16389#fibo2FINAL assume true; 16387#fibo2EXIT >#52#return; 16224#L15-1 [2023-11-06 22:16:14,860 INFO L750 eck$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 [2023-11-06 22:16:14,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1790184504, now seen corresponding path program 1 times [2023-11-06 22:16:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848020500] [2023-11-06 22:16:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:16:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:16:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:16:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848020500] [2023-11-06 22:16:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848020500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953424293] [2023-11-06 22:16:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:15,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:15,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:15,137 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:15,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-11-06 22:16:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:16:15,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:16:15,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:16:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953424293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:15,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:15,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2023-11-06 22:16:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84061144] [2023-11-06 22:16:15,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:15,546 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:16:15,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-06 22:16:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094272201] [2023-11-06 22:16:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:15,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:15,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:15,769 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:15,769 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:15,770 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:15,770 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:15,770 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:16:15,770 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:15,770 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:15,770 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:15,770 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2023-11-06 22:16:15,770 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:15,770 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:15,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,773 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,775 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,777 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,779 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,786 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,789 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:15,860 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:15,860 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:16:15,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:15,873 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:15,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:15,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:15,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2023-11-06 22:16:15,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:15,929 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:15,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:15,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:15,934 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:15,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:15,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:15,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2023-11-06 22:16:15,972 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:15,973 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:15,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:15,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:15,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:15,978 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:15,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:15,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:15,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-06 22:16:15,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:15,997 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:15,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,001 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-06 22:16:16,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:16,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:16,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:16,016 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:16,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2023-11-06 22:16:16,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,021 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-06 22:16:16,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:16,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:16,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:16,039 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:16,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,044 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-06 22:16:16,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:16,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:16,060 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:16,061 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:16,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2023-11-06 22:16:16,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,065 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-06 22:16:16,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:16,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:16,088 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:16,088 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:16,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2023-11-06 22:16:16,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,092 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-06 22:16:16,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:16,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:16,110 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:16:16,110 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:16:16,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2023-11-06 22:16:16,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,114 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-06 22:16:16,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:16,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:16,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2023-11-06 22:16:16,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,136 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-06 22:16:16,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:16:16,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:16,155 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:16:16,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2023-11-06 22:16:16,158 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:16,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:16,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:16,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:16,158 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:16:16,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,159 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:16,159 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:16,159 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2023-11-06 22:16:16,159 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:16,159 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:16,160 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,164 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,169 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,171 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,181 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,183 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:16,236 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:16,236 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:16:16,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,238 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2023-11-06 22:16:16,241 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 [2023-11-06 22:16:16,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,253 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,253 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,258 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2023-11-06 22:16:16,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,262 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2023-11-06 22:16:16,265 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 [2023-11-06 22:16:16,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,278 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2023-11-06 22:16:16,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,281 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2023-11-06 22:16:16,284 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 [2023-11-06 22:16:16,295 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,295 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,296 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,296 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,298 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,304 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,306 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 [2023-11-06 22:16:16,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2023-11-06 22:16:16,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,319 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,321 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,324 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2023-11-06 22:16:16,327 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 [2023-11-06 22:16:16,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,340 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,344 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2023-11-06 22:16:16,346 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 [2023-11-06 22:16:16,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,360 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,364 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2023-11-06 22:16:16,366 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 [2023-11-06 22:16:16,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,379 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,383 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2023-11-06 22:16:16,386 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 [2023-11-06 22:16:16,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,406 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:16:16,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2023-11-06 22:16:16,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,410 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2023-11-06 22:16:16,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:16:16,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:16,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:16,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:16,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:16,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:16,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:16,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:16,452 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:16:16,455 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:16:16,455 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:16:16,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:16,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:16,460 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:16,465 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:16:16,465 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:16:16,465 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:16:16,465 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:16:16,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2023-11-06 22:16:16,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,469 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:16:16,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:16,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:16:16,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:16,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:16:16,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:16,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:16,951 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 [2023-11-06 22:16:16,951 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) [2023-11-06 22:16:17,374 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. [2023-11-06 22:16:17,375 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 [2023-11-06 22:16:17,375 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) [2023-11-06 22:16:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 56 transitions. [2023-11-06 22:16:17,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 56 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-06 22:16:17,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:17,377 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:17,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:16:17,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:16:17,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:17,958 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 [2023-11-06 22:16:17,958 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) [2023-11-06 22:16:18,274 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. [2023-11-06 22:16:18,275 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 [2023-11-06 22:16:18,276 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) [2023-11-06 22:16:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2023-11-06 22:16:18,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-06 22:16:18,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:18,277 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:18,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:16:18,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:16:18,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:18,843 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 [2023-11-06 22:16:18,843 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) [2023-11-06 22:16:19,323 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. [2023-11-06 22:16:19,324 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 [2023-11-06 22:16:19,325 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) [2023-11-06 22:16:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2023-11-06 22:16:19,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-06 22:16:19,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:19,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 68 letters. Loop has 14 letters. [2023-11-06 22:16:19,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:19,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 28 letters. [2023-11-06 22:16:19,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:19,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2054 states and 2442 transitions. [2023-11-06 22:16:19,362 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 247 [2023-11-06 22:16:19,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2054 states to 1246 states and 1524 transitions. [2023-11-06 22:16:19,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 545 [2023-11-06 22:16:19,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 593 [2023-11-06 22:16:19,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1246 states and 1524 transitions. [2023-11-06 22:16:19,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:19,384 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1246 states and 1524 transitions. [2023-11-06 22:16:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states and 1524 transitions. [2023-11-06 22:16:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1061. [2023-11-06 22:16:19,421 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) [2023-11-06 22:16:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1285 transitions. [2023-11-06 22:16:19,427 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1061 states and 1285 transitions. [2023-11-06 22:16:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:16:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:16:19,428 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) [2023-11-06 22:16:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:19,956 INFO L93 Difference]: Finished difference Result 745 states and 889 transitions. [2023-11-06 22:16:19,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 745 states and 889 transitions. [2023-11-06 22:16:19,966 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2023-11-06 22:16:19,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 745 states to 569 states and 691 transitions. [2023-11-06 22:16:19,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 319 [2023-11-06 22:16:19,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 343 [2023-11-06 22:16:19,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 569 states and 691 transitions. [2023-11-06 22:16:19,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:19,976 INFO L218 hiAutomatonCegarLoop]: Abstraction has 569 states and 691 transitions. [2023-11-06 22:16:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states and 691 transitions. [2023-11-06 22:16:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 550. [2023-11-06 22:16:19,995 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) [2023-11-06 22:16:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 667 transitions. [2023-11-06 22:16:19,998 INFO L240 hiAutomatonCegarLoop]: Abstraction has 550 states and 667 transitions. [2023-11-06 22:16:19,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:16:20,001 INFO L428 stractBuchiCegarLoop]: Abstraction has 550 states and 667 transitions. [2023-11-06 22:16:20,001 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-06 22:16:20,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 550 states and 667 transitions. [2023-11-06 22:16:20,006 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2023-11-06 22:16:20,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:20,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:20,008 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] [2023-11-06 22:16:20,008 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:20,009 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#$Ultimate##0 [2023-11-06 22:16:20,009 INFO L750 eck$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 [2023-11-06 22:16:20,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash -96157049, now seen corresponding path program 1 times [2023-11-06 22:16:20,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:20,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112042221] [2023-11-06 22:16:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:20,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:16:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:16:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:16:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:16:20,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:20,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112042221] [2023-11-06 22:16:20,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112042221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:20,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703161468] [2023-11-06 22:16:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:20,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:20,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:20,493 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:20,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2023-11-06 22:16:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:16:20,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 22:16:20,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 22:16:21,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703161468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:21,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:21,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2023-11-06 22:16:21,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166583024] [2023-11-06 22:16:21,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:21,122 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:16:21,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-06 22:16:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216965472] [2023-11-06 22:16:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:21,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:21,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:21,258 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:21,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:21,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:21,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:21,258 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:16:21,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:21,258 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:21,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:21,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2023-11-06 22:16:21,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:21,259 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:21,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,270 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,273 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,282 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,287 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,337 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:21,337 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:16:21,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:21,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:21,339 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:21,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2023-11-06 22:16:21,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:21,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:21,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:21,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:21,359 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:21,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2023-11-06 22:16:21,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:16:21,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:21,441 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:16:21,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Ended with exit code 0 [2023-11-06 22:16:21,445 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:21,445 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:21,445 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:21,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:21,445 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:16:21,445 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:21,445 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:21,445 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:21,445 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2023-11-06 22:16:21,446 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:21,446 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:21,446 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,463 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,467 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,469 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:21,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:21,520 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:16:21,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:21,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:21,523 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:21,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2023-11-06 22:16:21,525 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 [2023-11-06 22:16:21,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:21,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:21,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:21,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:21,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:21,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:21,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:21,542 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:16:21,545 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:16:21,545 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:16:21,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:21,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:21,546 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:21,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2023-11-06 22:16:21,549 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:16:21,549 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:16:21,550 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:16:21,550 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-06 22:16:21,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:21,553 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:16:21,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:21,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:16:21,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:22,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:22,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:22,279 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 [2023-11-06 22:16:22,279 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) [2023-11-06 22:16:22,413 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. [2023-11-06 22:16:22,414 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 [2023-11-06 22:16:22,415 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) [2023-11-06 22:16:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-06 22:16:22,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-06 22:16:22,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:22,416 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:22,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:22,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:16:22,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:22,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:23,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:23,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:23,167 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 [2023-11-06 22:16:23,168 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) [2023-11-06 22:16:23,280 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. [2023-11-06 22:16:23,281 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 [2023-11-06 22:16:23,282 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) [2023-11-06 22:16:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-06 22:16:23,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-06 22:16:23,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:23,283 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:23,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:23,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:16:23,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:23,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:23,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:23,903 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 [2023-11-06 22:16:23,903 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) [2023-11-06 22:16:24,098 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. [2023-11-06 22:16:24,099 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 [2023-11-06 22:16:24,099 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) [2023-11-06 22:16:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-06 22:16:24,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-06 22:16:24,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:24,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2023-11-06 22:16:24,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:24,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2023-11-06 22:16:24,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:24,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 937 states and 1091 transitions. [2023-11-06 22:16:24,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-06 22:16:24,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 937 states to 666 states and 790 transitions. [2023-11-06 22:16:24,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 348 [2023-11-06 22:16:24,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 378 [2023-11-06 22:16:24,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 666 states and 790 transitions. [2023-11-06 22:16:24,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:24,128 INFO L218 hiAutomatonCegarLoop]: Abstraction has 666 states and 790 transitions. [2023-11-06 22:16:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states and 790 transitions. [2023-11-06 22:16:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 587. [2023-11-06 22:16:24,147 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) [2023-11-06 22:16:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 700 transitions. [2023-11-06 22:16:24,150 INFO L240 hiAutomatonCegarLoop]: Abstraction has 587 states and 700 transitions. [2023-11-06 22:16:24,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:24,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:16:24,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:16:24,152 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) [2023-11-06 22:16:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:24,862 INFO L93 Difference]: Finished difference Result 752 states and 952 transitions. [2023-11-06 22:16:24,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 752 states and 952 transitions. [2023-11-06 22:16:24,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-06 22:16:24,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 752 states to 690 states and 870 transitions. [2023-11-06 22:16:24,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 372 [2023-11-06 22:16:24,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 372 [2023-11-06 22:16:24,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 690 states and 870 transitions. [2023-11-06 22:16:24,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:16:24,884 INFO L218 hiAutomatonCegarLoop]: Abstraction has 690 states and 870 transitions. [2023-11-06 22:16:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states and 870 transitions. [2023-11-06 22:16:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 639. [2023-11-06 22:16:24,906 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) [2023-11-06 22:16:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 809 transitions. [2023-11-06 22:16:24,911 INFO L240 hiAutomatonCegarLoop]: Abstraction has 639 states and 809 transitions. [2023-11-06 22:16:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:16:24,912 INFO L428 stractBuchiCegarLoop]: Abstraction has 639 states and 809 transitions. [2023-11-06 22:16:24,912 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-06 22:16:24,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 639 states and 809 transitions. [2023-11-06 22:16:24,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-06 22:16:24,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:16:24,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:16:24,919 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] [2023-11-06 22:16:24,919 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:24,920 INFO L748 eck$LassoCheckResult]: Stem: 29120#$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); 29084#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; 29085#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 29126#$Ultimate##0 ~n := #in~n; 29158#L10 assume !(~n < 1); 29156#L12 assume !(1 == ~n); 29153#L15 call #t~ret4 := fibo2(~n - 1);< 29154#$Ultimate##0 ~n := #in~n; 29168#L20 assume !(~n < 1); 29166#L22 assume !(1 == ~n); 29163#L25 call #t~ret6 := fibo1(~n - 1);< 29164#$Ultimate##0 ~n := #in~n; 29178#L10 assume !(~n < 1); 29176#L12 assume !(1 == ~n); 29173#L15 call #t~ret4 := fibo2(~n - 1);< 29174#$Ultimate##0 ~n := #in~n; 29201#L20 assume !(~n < 1); 29199#L22 assume !(1 == ~n); 29196#L25 call #t~ret6 := fibo1(~n - 1);< 29197#$Ultimate##0 ~n := #in~n; 29224#L10 assume !(~n < 1); 29222#L12 assume !(1 == ~n); 29219#L15 call #t~ret4 := fibo2(~n - 1);< 29220#$Ultimate##0 ~n := #in~n; 29237#L20 assume !(~n < 1); 29234#L22 assume !(1 == ~n); 29230#L25 call #t~ret6 := fibo1(~n - 1);< 29231#$Ultimate##0 ~n := #in~n; 29249#L10 assume !(~n < 1); 29247#L12 assume !(1 == ~n); 29243#L15 call #t~ret4 := fibo2(~n - 1);< 29244#$Ultimate##0 ~n := #in~n; 29250#L20 assume !(~n < 1); 29248#L22 assume 1 == ~n;#res := 1; 29246#fibo2FINAL assume true; 29242#fibo2EXIT >#52#return; 29239#L15-1 call #t~ret5 := fibo2(~n - 2);< 29240#$Ultimate##0 ~n := #in~n; 29245#L20 assume ~n < 1;#res := 0; 29241#fibo2FINAL assume true; 29238#fibo2EXIT >#54#return; 29236#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 29233#fibo1FINAL assume true; 29229#fibo1EXIT >#48#return; 29226#L25-1 call #t~ret7 := fibo1(~n - 2);< 29227#$Ultimate##0 ~n := #in~n; 29235#L10 assume !(~n < 1); 29232#L12 assume 1 == ~n;#res := 1; 29228#fibo1FINAL assume true; 29225#fibo1EXIT >#50#return; 29223#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 29221#fibo2FINAL assume true; 29218#fibo2EXIT >#52#return; 29208#L15-1 call #t~ret5 := fibo2(~n - 2);< 29217#$Ultimate##0 ~n := #in~n; 29476#L20 assume !(~n < 1); 29475#L22 assume !(1 == ~n); 29286#L25 call #t~ret6 := fibo1(~n - 1);< 29474#$Ultimate##0 ~n := #in~n; 29498#L10 assume !(~n < 1); 29494#L12 assume !(1 == ~n); 29114#L15 call #t~ret4 := fibo2(~n - 1);< 29490#$Ultimate##0 ~n := #in~n; 29111#L20 assume !(~n < 1); 29115#L22 assume !(1 == ~n); 29638#L25 call #t~ret6 := fibo1(~n - 1);< 29660#$Ultimate##0 ~n := #in~n; 29659#L10 assume !(~n < 1); 29658#L12 assume !(1 == ~n); 29069#L15 [2023-11-06 22:16:24,920 INFO L750 eck$LassoCheckResult]: Loop: 29069#L15 call #t~ret4 := fibo2(~n - 1);< 29632#$Ultimate##0 ~n := #in~n; 29633#L20 assume !(~n < 1); 29662#L22 assume !(1 == ~n); 29637#L25 call #t~ret6 := fibo1(~n - 1);< 29660#$Ultimate##0 ~n := #in~n; 29659#L10 assume !(~n < 1); 29658#L12 assume !(1 == ~n); 29069#L15 [2023-11-06 22:16:24,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash 265386094, now seen corresponding path program 2 times [2023-11-06 22:16:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624443927] [2023-11-06 22:16:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:16:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:16:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:16:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:25,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624443927] [2023-11-06 22:16:25,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624443927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046987378] [2023-11-06 22:16:25,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:16:25,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:25,234 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:25,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2023-11-06 22:16:25,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:16:25,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:16:25,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:16:25,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:16:25,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:16:25,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046987378] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:25,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:25,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2023-11-06 22:16:25,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291605379] [2023-11-06 22:16:25,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:25,744 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:16:25,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2023-11-06 22:16:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206226776] [2023-11-06 22:16:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:25,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:16:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:16:25,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:16:25,945 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:25,945 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:25,945 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:25,945 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:25,946 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:16:25,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:25,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:25,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:25,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2023-11-06 22:16:25,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:25,946 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:25,948 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:25,962 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:25,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:25,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:25,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:25,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:25,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:25,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:26,066 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:26,066 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:16:26,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:26,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:26,073 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:26,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:16:26,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:26,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2023-11-06 22:16:26,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:26,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:26,122 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:26,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:16:26,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:16:26,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2023-11-06 22:16:28,975 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:16:28,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:28,979 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:16:28,979 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:16:28,979 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:16:28,979 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:16:28,979 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:16:28,980 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:28,980 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:16:28,980 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:16:28,980 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2023-11-06 22:16:28,980 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:16:28,980 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:16:28,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:28,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:28,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:28,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:29,000 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:29,002 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:29,004 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:29,007 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:16:29,100 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:16:29,100 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:16:29,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:29,101 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:29,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2023-11-06 22:16:29,105 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 [2023-11-06 22:16:29,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:16:29,117 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:16:29,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:16:29,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:16:29,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:16:29,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:16:29,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:16:29,123 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:16:29,126 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:16:29,126 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:16:29,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:16:29,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:29,128 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:29,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2023-11-06 22:16:29,130 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:16:29,131 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:16:29,131 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:16:29,131 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:16:29,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Ended with exit code 0 [2023-11-06 22:16:29,134 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:16:29,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:29,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:16:29,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:29,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:29,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:29,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:29,811 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 [2023-11-06 22:16:29,811 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) [2023-11-06 22:16:29,956 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. [2023-11-06 22:16:29,957 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 [2023-11-06 22:16:29,960 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) [2023-11-06 22:16:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2023-11-06 22:16:29,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-06 22:16:29,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:29,962 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:29,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:30,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:16:30,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:30,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:30,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:30,581 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 [2023-11-06 22:16:30,581 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) [2023-11-06 22:16:30,764 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. [2023-11-06 22:16:30,765 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 [2023-11-06 22:16:30,766 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) [2023-11-06 22:16:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2023-11-06 22:16:30,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-06 22:16:30,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:30,767 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:16:30,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:30,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:16:30,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:31,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:31,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:31,400 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 [2023-11-06 22:16:31,401 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) [2023-11-06 22:16:31,583 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. [2023-11-06 22:16:31,584 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 [2023-11-06 22:16:31,585 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) [2023-11-06 22:16:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-06 22:16:31,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-06 22:16:31,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:31,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2023-11-06 22:16:31,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:31,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2023-11-06 22:16:31,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:16:31,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1252 states and 1531 transitions. [2023-11-06 22:16:31,602 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:16:31,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1252 states to 0 states and 0 transitions. [2023-11-06 22:16:31,603 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:16:31,603 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:16:31,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:16:31,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:16:31,603 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:16:31,604 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:16:31,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:16:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:16:31,605 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) [2023-11-06 22:16:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:31,605 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-06 22:16:31,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-06 22:16:31,606 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:16:31,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:16:31,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:16:31,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:16:31,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:16:31,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:16:31,607 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:16:31,607 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:16:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:16:31,607 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:16:31,608 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-06 22:16:31,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:16:31,608 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:16:31,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 22:16:31,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:16:31 BoogieIcfgContainer [2023-11-06 22:16:31,618 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:16:31,619 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:16:31,619 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:16:31,619 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:16:31,620 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:54" (3/4) ... [2023-11-06 22:16:31,622 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:16:31,624 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:16:31,625 INFO L158 Benchmark]: Toolchain (without parser) took 38121.67ms. Allocated memory was 138.4MB in the beginning and 333.4MB in the end (delta: 195.0MB). Free memory was 76.3MB in the beginning and 114.6MB in the end (delta: -38.3MB). Peak memory consumption was 158.6MB. Max. memory is 16.1GB. [2023-11-06 22:16:31,625 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 138.4MB. Free memory was 73.4MB in the beginning and 73.2MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:31,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.57ms. Allocated memory is still 138.4MB. Free memory was 75.9MB in the beginning and 108.7MB in the end (delta: -32.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-11-06 22:16:31,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.87ms. Allocated memory is still 138.4MB. Free memory was 108.7MB in the beginning and 107.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:31,627 INFO L158 Benchmark]: Boogie Preprocessor took 56.71ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 107.3MB in the beginning and 164.3MB in the end (delta: -57.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:16:31,627 INFO L158 Benchmark]: RCFGBuilder took 346.19ms. Allocated memory is still 190.8MB. Free memory was 164.3MB in the beginning and 153.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:16:31,628 INFO L158 Benchmark]: BuchiAutomizer took 37278.36ms. Allocated memory was 190.8MB in the beginning and 333.4MB in the end (delta: 142.6MB). Free memory was 153.9MB in the beginning and 114.6MB in the end (delta: 39.3MB). Peak memory consumption was 181.9MB. Max. memory is 16.1GB. [2023-11-06 22:16:31,628 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 333.4MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:31,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 138.4MB. Free memory was 73.4MB in the beginning and 73.2MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.57ms. Allocated memory is still 138.4MB. Free memory was 75.9MB in the beginning and 108.7MB in the end (delta: -32.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.87ms. Allocated memory is still 138.4MB. Free memory was 108.7MB in the beginning and 107.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.71ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 107.3MB in the beginning and 164.3MB in the end (delta: -57.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 346.19ms. Allocated memory is still 190.8MB. Free memory was 164.3MB in the beginning and 153.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 37278.36ms. Allocated memory was 190.8MB in the beginning and 333.4MB in the end (delta: 142.6MB). Free memory was 153.9MB in the beginning and 114.6MB in the end (delta: 39.3MB). Peak memory consumption was 181.9MB. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 333.4MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 37.1s and 11 iterations. TraceHistogramMax:12. Analysis of lassos took 18.9s. Construction of modules took 3.6s. Büchi inclusion checks took 13.8s. 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, 1421 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1379 mSDsluCounter, 2522 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1982 mSDsCounter, 818 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4215 IncrementalHoareTripleChecker+Invalid, 5033 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 818 mSolverCounterUnsat, 540 mSDtfsCounter, 4215 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: 44ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 34 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-06 22:16:31,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:31,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2023-11-06 22:16:32,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:32,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-06 22:16:32,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-06 22:16:32,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-06 22:16:32,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-06 22:16:33,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:33,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:33,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:33,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3378c48-01cb-4b9c-bcf8-e936b6a2c4a8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE