./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.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_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/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_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/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_05562882-6675-4b48-a157-d58c381ee1ca/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 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:46:26,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:46:26,402 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:46:26,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:46:26,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:46:26,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:46:26,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:46:26,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:46:26,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:46:26,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:46:26,468 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:46:26,468 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:46:26,469 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:46:26,471 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:46:26,471 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:46:26,472 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:46:26,472 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:46:26,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:46:26,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:46:26,474 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:46:26,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:46:26,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:46:26,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:46:26,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:46:26,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:46:26,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:46:26,477 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:46:26,477 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:46:26,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:46:26,478 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:46:26,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:46:26,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:46:26,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:46:26,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:46:26,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:46:26,481 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:46:26,481 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_05562882-6675-4b48-a157-d58c381ee1ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a [2023-11-06 22:46:26,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:46:26,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:46:26,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:46:26,834 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:46:26,835 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:46:26,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-06 22:46:29,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:46:30,093 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:46:30,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-06 22:46:30,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/data/e95251c97/a413e15d8123412181ca0e4f5ef88118/FLAGe03a09baf [2023-11-06 22:46:30,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/data/e95251c97/a413e15d8123412181ca0e4f5ef88118 [2023-11-06 22:46:30,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:46:30,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:46:30,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:30,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:46:30,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:46:30,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30, skipping insertion in model container [2023-11-06 22:46:30,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:46:30,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:30,448 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:46:30,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:30,475 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:46:30,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30 WrapperNode [2023-11-06 22:46:30,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:30,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:30,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:46:30,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:46:30,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,511 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-06 22:46:30,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:30,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:46:30,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:46:30,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:46:30,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:46:30,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:46:30,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:46:30,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:46:30,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (1/1) ... [2023-11-06 22:46:30,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:30,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:30,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:30,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:46:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:46:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:46:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-06 22:46:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-06 22:46:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-06 22:46:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-06 22:46:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:46:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:46:30,700 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:46:30,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:46:30,831 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:46:30,838 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:46:30,839 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:46:30,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:30 BoogieIcfgContainer [2023-11-06 22:46:30,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:46:30,843 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:46:30,843 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:46:30,848 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:46:30,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:46:30,849 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:46:30" (1/3) ... [2023-11-06 22:46:30,850 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@383511a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:46:30, skipping insertion in model container [2023-11-06 22:46:30,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:46:30,851 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:30" (2/3) ... [2023-11-06 22:46:30,851 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@383511a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:46:30, skipping insertion in model container [2023-11-06 22:46:30,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:46:30,852 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:30" (3/3) ... [2023-11-06 22:46:30,853 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_6-2.c [2023-11-06 22:46:30,913 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:46:30,913 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:46:30,914 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:46:30,914 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:46:30,914 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:46:30,914 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:46:30,914 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:46:30,915 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:46:30,918 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 22:46:30,941 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:46:30,941 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:30,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:30,947 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:46:30,948 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:30,948 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:46:30,948 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 22:46:30,952 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:46:30,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:30,953 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:30,953 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:46:30,953 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:30,962 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-06 22:46:30,963 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 22:46:30,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-06 22:46:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:30,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281020075] [2023-11-06 22:46:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:31,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:31,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:31,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-06 22:46:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395356545] [2023-11-06 22:46:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:31,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:31,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:31,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:31,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-06 22:46:31,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488306312] [2023-11-06 22:46:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:31,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:31,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:31,524 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:31,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:31,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:31,526 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:31,526 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:46:31,526 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,526 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:31,527 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:31,527 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration1_Loop [2023-11-06 22:46:31,527 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:31,527 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:31,549 INFO 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 22:46:31,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:31,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:31,574 INFO 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 22:46:31,581 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:31,587 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:31,591 INFO 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 22:46:31,597 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:31,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:31,690 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:46:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:31,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:31,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 22:46:31,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:31,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:31,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:31,740 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 22:46:31,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:31,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:31,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:31,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 22:46:31,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:31,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:31,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:31,780 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 22:46:31,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:31,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:31,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:31,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:31,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:31,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 22:46:31,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:31,824 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 22:46:31,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:31,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:31,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:31,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 22:46:31,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:31,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:31,861 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:31,861 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 22:46:31,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-06 22:46:31,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:31,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:31,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 22:46:31,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:31,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:31,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:31,924 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 22:46:31,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:31,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:31,931 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:31,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:31,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:31,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 22:46:31,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:31,962 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 22:46:31,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:31,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:31,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:31,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:31,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:32,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 22:46:32,030 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:32,030 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 22:46:32,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 22:46:32,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:32,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:32,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,083 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:46:32,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:32,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 22:46:32,175 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:46:32,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,179 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:32,179 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:32,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:32,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:32,179 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:46:32,179 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,179 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:32,179 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:32,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration1_Loop [2023-11-06 22:46:32,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:32,180 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:32,181 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 22:46:32,189 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 22:46:32,194 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 22:46:32,197 INFO 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 22:46:32,202 INFO 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 22:46:32,206 INFO 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 22:46:32,229 INFO 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 22:46:32,233 INFO 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 22:46:32,319 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:32,324 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:46:32,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,327 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 22:46:32,339 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 22:46:32,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:32,353 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:32,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:32,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:32,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:32,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:32,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:32,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:32,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 22:46:32,373 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 22:46:32,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:32,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:32,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:32,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:32,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:32,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:32,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:32,388 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:32,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,392 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 22:46:32,397 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 22:46:32,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:32,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:32,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:32,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:32,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:32,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:32,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:32,420 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:32,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,430 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,437 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 22:46:32,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 22:46:32,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:32,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:32,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:32,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:32,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:32,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:32,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:32,462 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:32,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,467 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 22:46:32,471 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 22:46:32,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:32,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:32,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:32,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:32,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:32,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:32,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:32,513 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:32,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 22:46:32,533 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 22:46:32,546 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:32,546 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:32,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:32,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:32,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:32,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:32,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:32,576 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:46:32,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:46:32,589 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:46:32,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:32,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:32,619 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:32,629 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:46:32,630 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:46:32,630 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:46:32,630 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-06 22:46:32,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 22:46:32,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:32,643 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:46:32,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:32,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:46:32,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:32,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-06 22:46:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:32,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:32,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:32,916 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 22:46:32,963 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 22:46:32,965 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 22:46:33,179 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 22:46:33,182 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 22:46:33,187 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 22:46:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-06 22:46:33,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-06 22:46:33,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:33,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-06 22:46:33,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:33,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-06 22:46:33,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:33,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-06 22:46:33,201 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:46:33,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-06 22:46:33,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-06 22:46:33,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-06 22:46:33,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-06 22:46:33,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:33,213 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-06 22:46:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-06 22:46:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-06 22:46:33,245 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 22:46:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-06 22:46:33,250 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-06 22:46:33,250 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-06 22:46:33,250 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:46:33,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-06 22:46:33,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:46:33,252 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:33,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:33,254 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:33,254 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:33,255 INFO L748 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-06 22:46:33,255 INFO L750 eck$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 22:46:33,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-06 22:46:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597393969] [2023-11-06 22:46:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:46:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,421 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 22:46:33,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597393969] [2023-11-06 22:46:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597393969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:33,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:33,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:46:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388858307] [2023-11-06 22:46:33,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:33,426 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:33,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-06 22:46:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:33,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857042706] [2023-11-06 22:46:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:46:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,529 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 22:46:33,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:33,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857042706] [2023-11-06 22:46:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857042706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:33,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:33,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:46:33,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089392017] [2023-11-06 22:46:33,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:33,531 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:46:33,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:46:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:46:33,535 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 22:46:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:33,620 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-06 22:46:33,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-06 22:46:33,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:46:33,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-06 22:46:33,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-06 22:46:33,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-06 22:46:33,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-06 22:46:33,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:33,629 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-06 22:46:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-06 22:46:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-06 22:46:33,636 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 22:46:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-06 22:46:33,638 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-06 22:46:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:46:33,640 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-06 22:46:33,640 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:46:33,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-06 22:46:33,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:46:33,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:33,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:33,644 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:33,644 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:33,644 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-06 22:46:33,645 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 22:46:33,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-06 22:46:33,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:33,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519657326] [2023-11-06 22:46:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:46:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,789 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 22:46:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519657326] [2023-11-06 22:46:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519657326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145485410] [2023-11-06 22:46:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:33,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:33,792 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:33,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:46:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:46:33,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:33,897 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 22:46:33,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:34,051 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 22:46:34,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145485410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:34,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:34,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-06 22:46:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960754619] [2023-11-06 22:46:34,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:34,053 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:34,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-06 22:46:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:34,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636961948] [2023-11-06 22:46:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:34,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:34,086 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:34,337 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:34,337 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:34,337 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:34,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:34,338 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:46:34,338 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,338 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:34,338 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:34,338 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration3_Loop [2023-11-06 22:46:34,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:34,339 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:34,354 INFO 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 22:46:34,358 INFO 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 22:46:34,360 INFO 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 22:46:34,363 INFO 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 22:46:34,366 INFO 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 22:46:34,370 INFO 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 22:46:34,377 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:34,379 INFO 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 22:46:34,382 INFO 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 22:46:34,444 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:34,444 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:46:34,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,446 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:34,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:34,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 22:46:34,485 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:34,485 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 22:46:34,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,496 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 22:46:34,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:34,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:34,537 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:34,537 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 22:46:34,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,549 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:34,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:34,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 22:46:34,593 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:34,593 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 22:46:34,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,598 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:34,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:34,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-06 22:46:34,628 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:34,628 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 22:46:34,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,638 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:34,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:34,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-06 22:46:34,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:34,670 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 22:46:34,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-06 22:46:34,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,675 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-06 22:46:34,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:34,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:34,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,707 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-06 22:46:34,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:46:34,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:34,744 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:46:34,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,754 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:34,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:34,754 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:34,754 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:34,754 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:46:34,754 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,754 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:34,754 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:34,754 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration3_Loop [2023-11-06 22:46:34,755 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:34,755 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:34,756 INFO 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 22:46:34,764 INFO 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 22:46:34,767 INFO 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 22:46:34,779 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 22:46:34,782 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:34,788 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:34,792 INFO 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 22:46:34,795 INFO 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 22:46:34,798 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:34,851 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:34,852 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:46:34,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,853 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,867 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 22:46:34,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:34,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:34,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:34,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:34,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:34,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:34,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:34,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-06 22:46:34,896 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:34,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,903 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,907 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 22:46:34,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:34,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:34,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:34,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:34,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:34,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:34,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:34,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-06 22:46:34,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:34,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,942 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,945 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 22:46:34,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-06 22:46:34,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:34,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:34,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:34,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:34,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:34,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:34,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:34,968 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:34,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:34,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:34,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:34,974 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:34,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 22:46:34,977 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 22:46:34,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:34,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:34,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:34,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:34,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:34,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:34,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:35,000 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:35,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:35,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:35,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:35,010 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:35,014 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 22:46:35,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:35,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:35,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:35,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:35,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:35,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:35,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:35,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 22:46:35,044 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:46:35,054 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:46:35,054 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:46:35,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:35,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:35,058 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:35,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:46:35,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:46:35,060 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:46:35,060 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-06 22:46:35,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 22:46:35,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:35,065 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:46:35,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:35,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:46:35,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:35,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:46:35,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:35,444 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 22:46:35,445 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 22:46:35,446 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 22:46:35,954 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 22:46:35,955 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 22:46:35,957 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 22:46:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-06 22:46:35,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-06 22:46:35,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:35,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-06 22:46:35,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:35,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-06 22:46:35,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:35,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-06 22:46:35,978 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:46:35,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-06 22:46:35,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-06 22:46:35,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-06 22:46:35,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-06 22:46:35,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:35,997 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-06 22:46:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-06 22:46:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-06 22:46:36,017 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 22:46:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-06 22:46:36,022 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-06 22:46:36,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:46:36,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:46:36,023 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 22:46:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:36,339 INFO L93 Difference]: Finished difference Result 209 states and 276 transitions. [2023-11-06 22:46:36,339 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 209 states and 276 transitions. [2023-11-06 22:46:36,345 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:46:36,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 209 states to 200 states and 267 transitions. [2023-11-06 22:46:36,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2023-11-06 22:46:36,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2023-11-06 22:46:36,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 267 transitions. [2023-11-06 22:46:36,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:36,351 INFO L218 hiAutomatonCegarLoop]: Abstraction has 200 states and 267 transitions. [2023-11-06 22:46:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 267 transitions. [2023-11-06 22:46:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 185. [2023-11-06 22:46:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 124 states have internal predecessors, (142), 43 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (62), 37 states have call predecessors, (62), 41 states have call successors, (62) [2023-11-06 22:46:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2023-11-06 22:46:36,369 INFO L240 hiAutomatonCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-06 22:46:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:46:36,370 INFO L428 stractBuchiCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-06 22:46:36,370 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:46:36,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 249 transitions. [2023-11-06 22:46:36,373 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:46:36,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:36,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:36,374 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 22:46:36,375 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:36,375 INFO L748 eck$LassoCheckResult]: Stem: 1299#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 1277#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1302#$Ultimate##0 ~n := #in~n; 1342#L10 assume !(~n < 1); 1341#L12 assume !(1 == ~n); 1241#L15 call #t~ret4 := fibo2(~n - 1);< 1340#$Ultimate##0 ~n := #in~n; 1339#L20 assume !(~n < 1); 1240#L22 assume !(1 == ~n); 1242#L25 call #t~ret6 := fibo1(~n - 1);< 1274#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1288#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1294#$Ultimate##0 ~n := #in~n; 1296#L20 assume !(~n < 1); 1297#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1333#$Ultimate##0 ~n := #in~n; 1334#L10 assume !(~n < 1); 1344#L12 assume !(1 == ~n); 1345#L15 call #t~ret4 := fibo2(~n - 1);< 1353#$Ultimate##0 ~n := #in~n; 1357#L20 assume ~n < 1;#res := 0; 1356#fibo2FINAL assume true; 1352#fibo2EXIT >#52#return; 1349#L15-1 call #t~ret5 := fibo2(~n - 2);< 1350#$Ultimate##0 ~n := #in~n; 1354#L20 assume ~n < 1;#res := 0; 1351#fibo2FINAL assume true; 1348#fibo2EXIT >#54#return; 1346#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1347#fibo1FINAL assume true; 1414#fibo1EXIT >#48#return; 1267#L25-1 call #t~ret7 := fibo1(~n - 2);< 1332#$Ultimate##0 ~n := #in~n; 1371#L10 assume ~n < 1;#res := 0; 1420#fibo1FINAL assume true; 1265#fibo1EXIT >#50#return; 1269#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1280#fibo2FINAL assume true; 1289#fibo2EXIT >#52#return; 1298#L15-1 call #t~ret5 := fibo2(~n - 2);< 1362#$Ultimate##0 [2023-11-06 22:46:36,375 INFO L750 eck$LassoCheckResult]: Loop: 1362#$Ultimate##0 ~n := #in~n; 1417#L20 assume !(~n < 1); 1415#L22 assume !(1 == ~n); 1272#L25 call #t~ret6 := fibo1(~n - 1);< 1260#$Ultimate##0 ~n := #in~n; 1273#L10 assume !(~n < 1); 1293#L12 assume !(1 == ~n); 1361#L15 call #t~ret4 := fibo2(~n - 1);< 1362#$Ultimate##0 [2023-11-06 22:46:36,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-06 22:46:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357325692] [2023-11-06 22:46:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:46:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:36,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:36,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:46:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:46:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:36,654 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 22:46:36,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357325692] [2023-11-06 22:46:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357325692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:36,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573975912] [2023-11-06 22:46:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:36,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:36,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:36,664 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:36,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:46:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:36,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:46:36,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:36,943 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 22:46:36,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:46:37,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573975912] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:37,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 20 [2023-11-06 22:46:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272051668] [2023-11-06 22:46:37,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:37,415 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:37,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-06 22:46:37,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:37,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720277000] [2023-11-06 22:46:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:37,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:37,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:37,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:37,539 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:37,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:37,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:37,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:37,539 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:46:37,539 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:37,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:37,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration4_Loop [2023-11-06 22:46:37,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:37,540 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:37,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:37,543 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:37,545 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 22:46:37,547 INFO 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 22:46:37,549 INFO 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 22:46:37,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:37,554 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:37,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:37,609 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:37,609 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:46:37,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,611 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:37,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-06 22:46:37,643 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:37,643 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 22:46:37,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,648 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:37,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-06 22:46:37,680 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:37,681 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 22:46:37,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,690 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:37,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-06 22:46:37,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:37,717 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 22:46:37,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,722 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:37,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-06 22:46:37,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:37,750 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 22:46:37,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,760 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:37,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-06 22:46:37,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:37,787 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 22:46:37,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,797 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:37,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-06 22:46:37,833 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:37,833 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 22:46:37,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,843 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:37,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-06 22:46:37,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-06 22:46:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,883 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:46:37,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:37,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-06 22:46:37,989 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:46:37,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,993 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:37,993 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:37,993 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:37,993 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:37,993 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:46:37,993 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:37,993 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:37,994 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:37,994 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration4_Loop [2023-11-06 22:46:37,994 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:37,994 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:37,995 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 22:46:37,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:38,001 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:38,004 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 22:46:38,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:38,008 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:38,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:38,012 INFO 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 22:46:38,082 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:38,083 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:46:38,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,085 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,089 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:46:38,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-06 22:46:38,119 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:38,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,124 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,128 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 22:46:38,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-06 22:46:38,141 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:38,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,155 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,161 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 22:46:38,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,173 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-06 22:46:38,174 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,183 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:38,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,193 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,201 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 22:46:38,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,213 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,214 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,214 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-06 22:46:38,228 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:38,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,235 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,241 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 22:46:38,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-06 22:46:38,264 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:38,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,269 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,273 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 22:46:38,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-06 22:46:38,296 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:38,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,301 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,305 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 22:46:38,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,317 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,317 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,317 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,317 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,318 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-06 22:46:38,332 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:38,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,337 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,340 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 22:46:38,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-06 22:46:38,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:38,353 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:38,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:38,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:38,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:38,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:38,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:38,380 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:46:38,384 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:46:38,384 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:46:38,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:38,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:38,387 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:38,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:46:38,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:46:38,389 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:46:38,389 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-06 22:46:38,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-06 22:46:38,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,394 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:46:38,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:38,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:46:38,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:38,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:38,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:38,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:38,928 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 22:46:38,929 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 22:46:38,930 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:39,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 691 states and 965 transitions. Complement of second has 26 states. [2023-11-06 22:46:39,145 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 22:46:39,148 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 22:46:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-06 22:46:39,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-06 22:46:39,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:39,151 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:39,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:39,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:46:39,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:39,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:39,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:39,680 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 22:46:39,681 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 22:46:39,681 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:39,882 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 691 states and 965 transitions. Complement of second has 26 states. [2023-11-06 22:46:39,882 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 22:46:39,885 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 22:46:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-06 22:46:39,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-06 22:46:39,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:39,886 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:39,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:39,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:46:39,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:40,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:40,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:40,391 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 22:46:40,392 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 22:46:40,392 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:40,574 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 576 states and 790 transitions. Complement of second has 25 states. [2023-11-06 22:46:40,575 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 22:46:40,576 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 22:46:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-06 22:46:40,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-06 22:46:40,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:40,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-06 22:46:40,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:40,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-06 22:46:40,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:40,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 576 states and 790 transitions. [2023-11-06 22:46:40,589 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-06 22:46:40,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 576 states to 465 states and 663 transitions. [2023-11-06 22:46:40,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 204 [2023-11-06 22:46:40,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 235 [2023-11-06 22:46:40,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 465 states and 663 transitions. [2023-11-06 22:46:40,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:40,604 INFO L218 hiAutomatonCegarLoop]: Abstraction has 465 states and 663 transitions. [2023-11-06 22:46:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states and 663 transitions. [2023-11-06 22:46:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 390. [2023-11-06 22:46:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 259 states have (on average 1.2702702702702702) internal successors, (329), 282 states have internal predecessors, (329), 76 states have call successors, (79), 58 states have call predecessors, (79), 55 states have return successors, (123), 49 states have call predecessors, (123), 74 states have call successors, (123) [2023-11-06 22:46:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 531 transitions. [2023-11-06 22:46:40,643 INFO L240 hiAutomatonCegarLoop]: Abstraction has 390 states and 531 transitions. [2023-11-06 22:46:40,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:40,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:46:40,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:46:40,645 INFO L87 Difference]: Start difference. First operand 390 states and 531 transitions. Second operand has 20 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 13 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-06 22:46:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:41,153 INFO L93 Difference]: Finished difference Result 469 states and 660 transitions. [2023-11-06 22:46:41,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 660 transitions. [2023-11-06 22:46:41,165 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:46:41,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 430 states and 616 transitions. [2023-11-06 22:46:41,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 237 [2023-11-06 22:46:41,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 238 [2023-11-06 22:46:41,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 616 transitions. [2023-11-06 22:46:41,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:41,180 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 616 transitions. [2023-11-06 22:46:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 616 transitions. [2023-11-06 22:46:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 381. [2023-11-06 22:46:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 247 states have (on average 1.2267206477732793) internal successors, (303), 276 states have internal predecessors, (303), 79 states have call successors, (82), 53 states have call predecessors, (82), 55 states have return successors, (138), 51 states have call predecessors, (138), 77 states have call successors, (138) [2023-11-06 22:46:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 523 transitions. [2023-11-06 22:46:41,221 INFO L240 hiAutomatonCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-06 22:46:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:46:41,224 INFO L428 stractBuchiCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-06 22:46:41,224 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:46:41,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 381 states and 523 transitions. [2023-11-06 22:46:41,229 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:46:41,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:41,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:41,236 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:41,236 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 22:46:41,237 INFO L748 eck$LassoCheckResult]: Stem: 5272#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5231#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 5232#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5279#$Ultimate##0 ~n := #in~n; 5329#L10 assume !(~n < 1); 5328#L12 assume !(1 == ~n); 5324#L15 call #t~ret4 := fibo2(~n - 1);< 5327#$Ultimate##0 ~n := #in~n; 5326#L20 assume !(~n < 1); 5325#L22 assume !(1 == ~n); 5320#L25 call #t~ret6 := fibo1(~n - 1);< 5323#$Ultimate##0 ~n := #in~n; 5322#L10 assume !(~n < 1); 5321#L12 assume !(1 == ~n); 5308#L15 call #t~ret4 := fibo2(~n - 1);< 5318#$Ultimate##0 ~n := #in~n; 5317#L20 assume !(~n < 1); 5313#L22 assume !(1 == ~n); 5251#L25 call #t~ret6 := fibo1(~n - 1);< 5309#$Ultimate##0 ~n := #in~n; 5315#L10 assume !(~n < 1); 5430#L12 assume !(1 == ~n); 5382#L15 call #t~ret4 := fibo2(~n - 1);< 5429#$Ultimate##0 ~n := #in~n; 5496#L20 assume !(~n < 1); 5494#L22 assume 1 == ~n;#res := 1; 5492#fibo2FINAL assume true; 5427#fibo2EXIT >#52#return; 5196#L15-1 call #t~ret5 := fibo2(~n - 2);< 5201#$Ultimate##0 ~n := #in~n; 5202#L20 assume ~n < 1;#res := 0; 5197#fibo2FINAL assume true; 5498#fibo2EXIT >#54#return; 5495#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5493#fibo1FINAL assume true; 5421#fibo1EXIT >#48#return; 5398#L25-1 call #t~ret7 := fibo1(~n - 2);< 5405#$Ultimate##0 ~n := #in~n; 5503#L10 assume ~n < 1;#res := 0; 5501#fibo1FINAL assume true; 5487#fibo1EXIT >#50#return; 5444#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5485#fibo2FINAL assume true; 5483#fibo2EXIT >#52#return; 5417#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 [2023-11-06 22:46:41,238 INFO L750 eck$LassoCheckResult]: Loop: 5422#$Ultimate##0 ~n := #in~n; 5207#L20 assume !(~n < 1); 5415#L22 assume !(1 == ~n); 5222#L25 call #t~ret6 := fibo1(~n - 1);< 5437#$Ultimate##0 ~n := #in~n; 5432#L10 assume !(~n < 1); 5433#L12 assume !(1 == ~n); 5205#L15 call #t~ret4 := fibo2(~n - 1);< 5203#$Ultimate##0 ~n := #in~n; 5207#L20 assume !(~n < 1); 5415#L22 assume !(1 == ~n); 5222#L25 call #t~ret6 := fibo1(~n - 1);< 5437#$Ultimate##0 ~n := #in~n; 5432#L10 assume !(~n < 1); 5433#L12 assume !(1 == ~n); 5205#L15 call #t~ret4 := fibo2(~n - 1);< 5203#$Ultimate##0 ~n := #in~n; 5206#L20 assume !(~n < 1); 5486#L22 assume 1 == ~n;#res := 1; 5484#fibo2FINAL assume true; 5468#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#48#return; 5439#L25-1 call #t~ret7 := fibo1(~n - 2);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume !(~n < 1); 5481#L12 assume !(1 == ~n); 5447#L15 call #t~ret4 := fibo2(~n - 1);< 5459#$Ultimate##0 ~n := #in~n; 5458#L20 assume !(~n < 1); 5456#L22 assume !(1 == ~n); 5442#L25 call #t~ret6 := fibo1(~n - 1);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume !(~n < 1); 5481#L12 assume !(1 == ~n); 5447#L15 call #t~ret4 := fibo2(~n - 1);< 5459#$Ultimate##0 ~n := #in~n; 5458#L20 assume !(~n < 1); 5456#L22 assume 1 == ~n;#res := 1; 5457#fibo2FINAL assume true; 5467#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#48#return; 5439#L25-1 call #t~ret7 := fibo1(~n - 2);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume ~n < 1;#res := 0; 5476#fibo1FINAL assume true; 5489#fibo1EXIT >#50#return; 5443#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5506#fibo2FINAL assume true; 5463#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#50#return; 5443#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5506#fibo2FINAL assume true; 5463#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 [2023-11-06 22:46:41,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1560322136, now seen corresponding path program 1 times [2023-11-06 22:46:41,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:41,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877358148] [2023-11-06 22:46:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:41,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:41,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:46:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:41,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:46:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:46:41,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877358148] [2023-11-06 22:46:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877358148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066213478] [2023-11-06 22:46:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:41,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:41,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:41,566 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:41,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-06 22:46:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:41,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:46:41,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:46:41,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:46:42,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066213478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:42,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2023-11-06 22:46:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251197368] [2023-11-06 22:46:42,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:42,011 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:42,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-06 22:46:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:42,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176567384] [2023-11-06 22:46:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:46:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:46:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:46:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:46:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,418 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 22:46:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:42,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176567384] [2023-11-06 22:46:42,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176567384] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:42,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750519030] [2023-11-06 22:46:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:42,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:42,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:42,440 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:42,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-06 22:46:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:46:42,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:42,612 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 22:46:42,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:43,139 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 22:46:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750519030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:43,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:43,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-06 22:46:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771199572] [2023-11-06 22:46:43,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:43,141 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:46:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:46:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:46:43,142 INFO L87 Difference]: Start difference. First operand 381 states and 523 transitions. cyclomatic complexity: 149 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 10 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 22:46:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:43,477 INFO L93 Difference]: Finished difference Result 412 states and 577 transitions. [2023-11-06 22:46:43,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 412 states and 577 transitions. [2023-11-06 22:46:43,483 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:46:43,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 412 states to 412 states and 577 transitions. [2023-11-06 22:46:43,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2023-11-06 22:46:43,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2023-11-06 22:46:43,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 412 states and 577 transitions. [2023-11-06 22:46:43,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:43,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 412 states and 577 transitions. [2023-11-06 22:46:43,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states and 577 transitions. [2023-11-06 22:46:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 394. [2023-11-06 22:46:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 255 states have (on average 1.219607843137255) internal successors, (311), 286 states have internal predecessors, (311), 80 states have call successors, (83), 54 states have call predecessors, (83), 59 states have return successors, (145), 53 states have call predecessors, (145), 78 states have call successors, (145) [2023-11-06 22:46:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 539 transitions. [2023-11-06 22:46:43,513 INFO L240 hiAutomatonCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-06 22:46:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:46:43,514 INFO L428 stractBuchiCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-06 22:46:43,514 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:46:43,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 394 states and 539 transitions. [2023-11-06 22:46:43,518 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:46:43,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:43,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:43,520 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:43,521 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-06 22:46:43,521 INFO L748 eck$LassoCheckResult]: Stem: 7080#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7044#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 7045#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7082#$Ultimate##0 ~n := #in~n; 7145#L10 assume !(~n < 1); 7144#L12 assume !(1 == ~n); 7140#L15 call #t~ret4 := fibo2(~n - 1);< 7143#$Ultimate##0 ~n := #in~n; 7142#L20 assume !(~n < 1); 7141#L22 assume !(1 == ~n); 7136#L25 call #t~ret6 := fibo1(~n - 1);< 7139#$Ultimate##0 ~n := #in~n; 7138#L10 assume !(~n < 1); 7137#L12 assume !(1 == ~n); 7125#L15 call #t~ret4 := fibo2(~n - 1);< 7135#$Ultimate##0 ~n := #in~n; 7134#L20 assume !(~n < 1); 7131#L22 assume !(1 == ~n); 7055#L25 call #t~ret6 := fibo1(~n - 1);< 7126#$Ultimate##0 ~n := #in~n; 7108#L10 assume !(~n < 1); 7109#L12 assume !(1 == ~n); 7100#L15 call #t~ret4 := fibo2(~n - 1);< 7101#$Ultimate##0 ~n := #in~n; 7123#L20 assume !(~n < 1); 7124#L22 assume !(1 == ~n); 7057#L25 call #t~ret6 := fibo1(~n - 1);< 7126#$Ultimate##0 ~n := #in~n; 7132#L10 assume !(~n < 1); 7234#L12 assume 1 == ~n;#res := 1; 7232#fibo1FINAL assume true; 7230#fibo1EXIT >#48#return; 7042#L25-1 call #t~ret7 := fibo1(~n - 2);< 7215#$Ultimate##0 ~n := #in~n; 7339#L10 assume ~n < 1;#res := 0; 7340#fibo1FINAL assume true; 7039#fibo1EXIT >#50#return; 7043#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7346#fibo2FINAL assume true; 7266#fibo2EXIT >#52#return; 7223#L15-1 [2023-11-06 22:46:43,521 INFO L750 eck$LassoCheckResult]: Loop: 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7282#L20 assume !(~n < 1); 7222#L22 assume !(1 == ~n); 7228#L25 call #t~ret6 := fibo1(~n - 1);< 7221#$Ultimate##0 ~n := #in~n; 7303#L10 assume !(~n < 1); 7302#L12 assume !(1 == ~n); 7226#L15 call #t~ret4 := fibo2(~n - 1);< 7277#$Ultimate##0 ~n := #in~n; 7282#L20 assume !(~n < 1); 7222#L22 assume !(1 == ~n); 7228#L25 call #t~ret6 := fibo1(~n - 1);< 7221#$Ultimate##0 ~n := #in~n; 7303#L10 assume !(~n < 1); 7302#L12 assume !(1 == ~n); 7226#L15 call #t~ret4 := fibo2(~n - 1);< 7277#$Ultimate##0 ~n := #in~n; 7322#L20 assume !(~n < 1); 7321#L22 assume 1 == ~n;#res := 1; 7320#fibo2FINAL assume true; 7279#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#48#return; 7255#L25-1 call #t~ret7 := fibo1(~n - 2);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume !(1 == ~n); 7262#L15 call #t~ret4 := fibo2(~n - 1);< 7275#$Ultimate##0 ~n := #in~n; 7327#L20 assume !(~n < 1); 7325#L22 assume !(1 == ~n); 7256#L25 call #t~ret6 := fibo1(~n - 1);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume !(1 == ~n); 7262#L15 call #t~ret4 := fibo2(~n - 1);< 7275#$Ultimate##0 ~n := #in~n; 7327#L20 assume !(~n < 1); 7325#L22 assume 1 == ~n;#res := 1; 7323#fibo2FINAL assume true; 7281#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#48#return; 7255#L25-1 call #t~ret7 := fibo1(~n - 2);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume 1 == ~n;#res := 1; 7296#fibo1FINAL assume true; 7284#fibo1EXIT >#50#return; 7258#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7273#fibo2FINAL assume true; 7269#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#50#return; 7258#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7273#fibo2FINAL assume true; 7269#fibo2EXIT >#52#return; 7223#L15-1 [2023-11-06 22:46:43,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1100171425, now seen corresponding path program 1 times [2023-11-06 22:46:43,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:43,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684558194] [2023-11-06 22:46:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:43,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:46:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:46:43,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:43,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684558194] [2023-11-06 22:46:43,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684558194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:43,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710041754] [2023-11-06 22:46:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:43,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:43,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:43,759 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:43,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-06 22:46:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:46:43,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:46:43,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:46:44,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710041754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:44,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:44,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 21 [2023-11-06 22:46:44,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677536423] [2023-11-06 22:46:44,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:44,246 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:44,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2083907171, now seen corresponding path program 1 times [2023-11-06 22:46:44,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024000618] [2023-11-06 22:46:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:44,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:46:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:46:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:46:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:46:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-06 22:46:44,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:44,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024000618] [2023-11-06 22:46:44,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024000618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:44,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688546011] [2023-11-06 22:46:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:44,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:44,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:44,518 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:44,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-06 22:46:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:46:44,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-06 22:46:44,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-06 22:46:45,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688546011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:45,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-06 22:46:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435702499] [2023-11-06 22:46:45,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:45,229 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:46:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:46:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:46:45,230 INFO L87 Difference]: Start difference. First operand 394 states and 539 transitions. cyclomatic complexity: 152 Second operand has 22 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 10 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:46:45,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:45,741 INFO L93 Difference]: Finished difference Result 445 states and 553 transitions. [2023-11-06 22:46:45,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 445 states and 553 transitions. [2023-11-06 22:46:45,749 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2023-11-06 22:46:45,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 445 states to 299 states and 359 transitions. [2023-11-06 22:46:45,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2023-11-06 22:46:45,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 162 [2023-11-06 22:46:45,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 359 transitions. [2023-11-06 22:46:45,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:45,755 INFO L218 hiAutomatonCegarLoop]: Abstraction has 299 states and 359 transitions. [2023-11-06 22:46:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 359 transitions. [2023-11-06 22:46:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 277. [2023-11-06 22:46:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 199 states have internal predecessors, (211), 59 states have call successors, (60), 42 states have call predecessors, (60), 37 states have return successors, (61), 35 states have call predecessors, (61), 44 states have call successors, (61) [2023-11-06 22:46:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 332 transitions. [2023-11-06 22:46:45,766 INFO L240 hiAutomatonCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-06 22:46:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:46:45,767 INFO L428 stractBuchiCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-06 22:46:45,767 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 22:46:45,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 332 transitions. [2023-11-06 22:46:45,770 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 62 [2023-11-06 22:46:45,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:45,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:45,771 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:45,771 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:45,772 INFO L748 eck$LassoCheckResult]: Stem: 8909#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8879#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 8880#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8916#$Ultimate##0 ~n := #in~n; 8974#L10 assume !(~n < 1); 8973#L12 assume !(1 == ~n); 8969#L15 call #t~ret4 := fibo2(~n - 1);< 8972#$Ultimate##0 ~n := #in~n; 8971#L20 assume !(~n < 1); 8970#L22 assume !(1 == ~n); 8965#L25 call #t~ret6 := fibo1(~n - 1);< 8968#$Ultimate##0 ~n := #in~n; 8967#L10 assume !(~n < 1); 8966#L12 assume !(1 == ~n); 8941#L15 call #t~ret4 := fibo2(~n - 1);< 8964#$Ultimate##0 ~n := #in~n; 8963#L20 assume !(~n < 1); 8959#L22 assume !(1 == ~n); 8893#L25 call #t~ret6 := fibo1(~n - 1);< 8942#$Ultimate##0 ~n := #in~n; 8961#L10 assume !(~n < 1); 8984#L12 assume !(1 == ~n); 8985#L15 call #t~ret4 := fibo2(~n - 1);< 9026#$Ultimate##0 ~n := #in~n; 9035#L20 assume !(~n < 1); 9033#L22 assume 1 == ~n;#res := 1; 9031#fibo2FINAL assume true; 9025#fibo2EXIT >#52#return; 8890#L15-1 call #t~ret5 := fibo2(~n - 2);< 8894#$Ultimate##0 ~n := #in~n; 8989#L20 assume ~n < 1;#res := 0; 8988#fibo2FINAL assume true; 8987#fibo2EXIT >#54#return; 8986#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8983#fibo1FINAL assume true; 8981#fibo1EXIT >#48#return; 8955#L25-1 call #t~ret7 := fibo1(~n - 2);< 8979#$Ultimate##0 ~n := #in~n; 8976#L10 assume !(~n < 1); 8977#L12 assume !(1 == ~n); 8886#L15 call #t~ret4 := fibo2(~n - 1);< 8957#$Ultimate##0 ~n := #in~n; 8949#L20 assume !(~n < 1); 8946#L22 assume 1 == ~n;#res := 1; 8947#fibo2FINAL assume true; 9053#fibo2EXIT >#52#return; 8846#L15-1 [2023-11-06 22:46:45,772 INFO L750 eck$LassoCheckResult]: Loop: 8846#L15-1 call #t~ret5 := fibo2(~n - 2);< 8978#$Ultimate##0 ~n := #in~n; 8907#L20 assume !(~n < 1); 8839#L22 assume !(1 == ~n); 8847#L25 call #t~ret6 := fibo1(~n - 1);< 9059#$Ultimate##0 ~n := #in~n; 9068#L10 assume !(~n < 1); 9067#L12 assume !(1 == ~n); 8841#L15 call #t~ret4 := fibo2(~n - 1);< 9020#$Ultimate##0 ~n := #in~n; 9039#L20 assume !(~n < 1); 9037#L22 assume 1 == ~n;#res := 1; 9036#fibo2FINAL assume true; 9018#fibo2EXIT >#52#return; 8846#L15-1 [2023-11-06 22:46:45,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -663651953, now seen corresponding path program 1 times [2023-11-06 22:46:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204849724] [2023-11-06 22:46:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:46:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:46:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:46:45,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204849724] [2023-11-06 22:46:45,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204849724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443162999] [2023-11-06 22:46:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:45,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:45,977 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:45,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-06 22:46:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:46,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:46:46,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:46:46,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:46:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443162999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:46,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:46,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2023-11-06 22:46:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466854662] [2023-11-06 22:46:46,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:46,312 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:46,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-06 22:46:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166772369] [2023-11-06 22:46:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:46,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:46,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:46,523 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:46,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:46,523 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:46,523 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:46,523 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:46:46,523 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,523 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:46,523 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:46,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration7_Loop [2023-11-06 22:46:46,523 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:46,523 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:46,524 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 22:46:46,528 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 22:46:46,535 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 22:46:46,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:46,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:46,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:46,546 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:46,549 INFO 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 22:46:46,552 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:46,604 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:46,604 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:46:46,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:46,611 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:46,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:46,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:46,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-06 22:46:46,645 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:46,645 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 22:46:46,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:46,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:46,650 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:46,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:46,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:46,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-06 22:46:46,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:46,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:46,684 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:46,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:46:46,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:46,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-06 22:46:46,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:46:46,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:46,724 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:46,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:46,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:46,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:46,725 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:46:46,725 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:46,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:46,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration7_Loop [2023-11-06 22:46:46,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:46,725 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:46,726 INFO 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 22:46:46,729 INFO 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 22:46:46,732 INFO 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 22:46:46,737 INFO 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 22:46:46,740 INFO 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 22:46:46,746 INFO 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 22:46:46,748 INFO 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 22:46:46,751 INFO 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 22:46:46,753 INFO 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 22:46:46,815 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:46,815 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:46:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:46,817 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:46,825 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 22:46:46,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:46,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:46,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:46,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:46,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:46,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:46,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:46,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-06 22:46:46,859 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:46,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:46,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:46,866 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:46,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:46:46,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-06 22:46:46,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:46,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:46,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:46,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:46,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:46,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:46,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:46,895 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:46,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:46,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:46,900 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:46,905 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 22:46:46,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-06 22:46:46,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:46,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:46,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:46,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:46,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:46,919 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:46,919 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:46,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:46:46,940 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:46:46,940 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:46:46,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:46,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:46,942 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:46,945 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:46:46,945 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:46:46,945 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:46:46,945 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:46:46,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-06 22:46:46,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:46,952 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:46:46,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:46:47,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:47,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2023-11-06 22:46:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:46:47,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:47,461 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 22:46:47,462 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 22:46:47,463 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:46:47,875 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1005 states and 1188 transitions. Complement of second has 40 states. [2023-11-06 22:46:47,876 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 22:46:47,876 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 22:46:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 61 transitions. [2023-11-06 22:46:47,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 61 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-06 22:46:47,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:47,878 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:47,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:46:47,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:48,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:46:48,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:48,282 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 22:46:48,283 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 22:46:48,283 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:46:48,548 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 621 states and 723 transitions. Complement of second has 26 states. [2023-11-06 22:46:48,549 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 22:46:48,550 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 22:46:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2023-11-06 22:46:48,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-06 22:46:48,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:48,552 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:48,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:48,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:46:48,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:48,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:46:48,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:48,999 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 22:46:49,000 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 22:46:49,000 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:46:49,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1402 states and 1651 transitions. Complement of second has 102 states. [2023-11-06 22:46:49,443 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 22:46:49,443 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 22:46:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 71 transitions. [2023-11-06 22:46:49,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-06 22:46:49,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:49,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 60 letters. Loop has 14 letters. [2023-11-06 22:46:49,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:49,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 28 letters. [2023-11-06 22:46:49,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:49,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1402 states and 1651 transitions. [2023-11-06 22:46:49,465 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 186 [2023-11-06 22:46:49,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1402 states to 782 states and 926 transitions. [2023-11-06 22:46:49,475 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 334 [2023-11-06 22:46:49,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 358 [2023-11-06 22:46:49,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 782 states and 926 transitions. [2023-11-06 22:46:49,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:49,477 INFO L218 hiAutomatonCegarLoop]: Abstraction has 782 states and 926 transitions. [2023-11-06 22:46:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states and 926 transitions. [2023-11-06 22:46:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 640. [2023-11-06 22:46:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 419 states have (on average 1.1479713603818615) internal successors, (481), 464 states have internal predecessors, (481), 126 states have call successors, (134), 95 states have call predecessors, (134), 95 states have return successors, (133), 80 states have call predecessors, (133), 99 states have call successors, (133) [2023-11-06 22:46:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 748 transitions. [2023-11-06 22:46:49,499 INFO L240 hiAutomatonCegarLoop]: Abstraction has 640 states and 748 transitions. [2023-11-06 22:46:49,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:46:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:46:49,500 INFO L87 Difference]: Start difference. First operand 640 states and 748 transitions. Second operand has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:46:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:49,761 INFO L93 Difference]: Finished difference Result 431 states and 477 transitions. [2023-11-06 22:46:49,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 477 transitions. [2023-11-06 22:46:49,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-06 22:46:49,773 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 270 states and 303 transitions. [2023-11-06 22:46:49,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2023-11-06 22:46:49,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2023-11-06 22:46:49,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 303 transitions. [2023-11-06 22:46:49,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:49,774 INFO L218 hiAutomatonCegarLoop]: Abstraction has 270 states and 303 transitions. [2023-11-06 22:46:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 303 transitions. [2023-11-06 22:46:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2023-11-06 22:46:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 173 states have (on average 1.0982658959537572) internal successors, (190), 186 states have internal predecessors, (190), 48 states have call successors, (52), 38 states have call predecessors, (52), 40 states have return successors, (51), 36 states have call predecessors, (51), 40 states have call successors, (51) [2023-11-06 22:46:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 293 transitions. [2023-11-06 22:46:49,784 INFO L240 hiAutomatonCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-06 22:46:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:46:49,786 INFO L428 stractBuchiCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-06 22:46:49,786 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 22:46:49,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 261 states and 293 transitions. [2023-11-06 22:46:49,788 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-06 22:46:49,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:49,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:49,794 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:49,794 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:49,794 INFO L748 eck$LassoCheckResult]: Stem: 14398#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 14371#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 14372#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 14403#$Ultimate##0 ~n := #in~n; 14492#L10 assume !(~n < 1); 14491#L12 assume !(1 == ~n); 14487#L15 call #t~ret4 := fibo2(~n - 1);< 14490#$Ultimate##0 ~n := #in~n; 14489#L20 assume !(~n < 1); 14488#L22 assume !(1 == ~n); 14483#L25 call #t~ret6 := fibo1(~n - 1);< 14486#$Ultimate##0 ~n := #in~n; 14485#L10 assume !(~n < 1); 14484#L12 assume !(1 == ~n); 14479#L15 call #t~ret4 := fibo2(~n - 1);< 14482#$Ultimate##0 ~n := #in~n; 14481#L20 assume !(~n < 1); 14480#L22 assume !(1 == ~n); 14470#L25 call #t~ret6 := fibo1(~n - 1);< 14478#$Ultimate##0 ~n := #in~n; 14476#L10 assume !(~n < 1); 14474#L12 assume !(1 == ~n); 14466#L15 call #t~ret4 := fibo2(~n - 1);< 14471#$Ultimate##0 ~n := #in~n; 14477#L20 assume !(~n < 1); 14475#L22 assume 1 == ~n;#res := 1; 14473#fibo2FINAL assume true; 14465#fibo2EXIT >#52#return; 14467#L15-1 call #t~ret5 := fibo2(~n - 2);< 14546#$Ultimate##0 ~n := #in~n; 14548#L20 assume ~n < 1;#res := 0; 14547#fibo2FINAL assume true; 14545#fibo2EXIT >#54#return; 14544#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14542#fibo1FINAL assume true; 14540#fibo1EXIT >#48#return; 14537#L25-1 call #t~ret7 := fibo1(~n - 2);< 14538#$Ultimate##0 ~n := #in~n; 14543#L10 assume !(~n < 1); 14541#L12 assume 1 == ~n;#res := 1; 14539#fibo1FINAL assume true; 14536#fibo1EXIT >#50#return; 14535#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 14534#fibo2FINAL assume true; 14533#fibo2EXIT >#52#return; 14360#L15-1 call #t~ret5 := fibo2(~n - 2);< 14443#$Ultimate##0 ~n := #in~n; 14564#L20 assume !(~n < 1); 14563#L22 assume 1 == ~n;#res := 1; 14562#fibo2FINAL assume true; 14532#fibo2EXIT >#54#return; 14531#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14530#fibo1FINAL assume true; 14529#fibo1EXIT >#48#return; 14518#L25-1 call #t~ret7 := fibo1(~n - 2);< 14523#$Ultimate##0 ~n := #in~n; 14521#L10 assume !(~n < 1); 14517#L12 assume !(1 == ~n); 14356#L15 call #t~ret4 := fibo2(~n - 1);< 14397#$Ultimate##0 [2023-11-06 22:46:49,795 INFO L750 eck$LassoCheckResult]: Loop: 14397#$Ultimate##0 ~n := #in~n; 14524#L20 assume !(~n < 1); 14556#L22 assume !(1 == ~n); 14396#L25 call #t~ret6 := fibo1(~n - 1);< 14555#$Ultimate##0 ~n := #in~n; 14554#L10 assume !(~n < 1); 14550#L12 assume !(1 == ~n); 14357#L15 call #t~ret4 := fibo2(~n - 1);< 14397#$Ultimate##0 [2023-11-06 22:46:49,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2006509536, now seen corresponding path program 1 times [2023-11-06 22:46:49,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:49,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815335246] [2023-11-06 22:46:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:46:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:46:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:46:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:46:50,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815335246] [2023-11-06 22:46:50,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815335246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:50,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147724408] [2023-11-06 22:46:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:50,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:50,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:50,085 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:50,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-06 22:46:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:50,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:46:50,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 22:46:50,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 22:46:50,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147724408] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:50,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:50,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 21 [2023-11-06 22:46:50,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385518683] [2023-11-06 22:46:50,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:50,537 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:50,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:50,537 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-06 22:46:50,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:50,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266865475] [2023-11-06 22:46:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:50,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:50,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:50,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:50,649 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:50,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:50,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:50,650 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:50,650 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:46:50,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:50,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:50,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration8_Loop [2023-11-06 22:46:50,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:50,650 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:50,651 INFO 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 22:46:50,653 INFO 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 22:46:50,654 INFO 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 22:46:50,656 INFO 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 22:46:50,658 INFO 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 22:46:50,666 INFO 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 22:46:50,668 INFO 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 22:46:50,670 INFO 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 22:46:50,711 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:50,711 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:46:50,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:50,713 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:50,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-06 22:46:50,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:50,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:50,727 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:50,727 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 22:46:50,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:50,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:50,738 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:50,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-06 22:46:50,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:50,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:50,752 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:50,752 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 22:46:50,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2023-11-06 22:46:50,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:50,755 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:50,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-06 22:46:50,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:50,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:50,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:50,770 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:46:50,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:50,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:50,773 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:50,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-06 22:46:50,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:50,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:50,812 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:50,813 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 22:46:50,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:50,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:50,817 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:50,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:50,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:50,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-06 22:46:50,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:50,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:50,853 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:50,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:46:50,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:50,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-06 22:46:50,936 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:46:50,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-06 22:46:50,939 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:50,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:50,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:50,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:50,940 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:46:50,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:50,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:50,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:50,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration8_Loop [2023-11-06 22:46:50,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:50,940 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:50,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:50,943 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:50,945 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:50,947 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:50,948 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 22:46:50,963 INFO 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 22:46:50,965 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 22:46:50,967 INFO 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 22:46:51,042 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:51,042 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:46:51,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:51,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:51,044 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:51,047 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 22:46:51,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-06 22:46:51,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:51,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:51,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:51,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:51,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:51,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:51,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:51,075 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:51,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-06 22:46:51,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:51,079 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:51,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-06 22:46:51,083 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:46:51,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:51,093 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:51,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:51,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:51,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:51,093 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:51,093 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:51,095 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:51,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2023-11-06 22:46:51,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:51,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:51,098 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:51,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-06 22:46:51,102 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 22:46:51,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:51,111 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:51,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:51,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:51,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:51,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:51,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:51,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:51,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2023-11-06 22:46:51,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:51,119 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:51,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-06 22:46:51,124 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 22:46:51,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:51,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:51,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:51,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:51,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:51,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:51,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:51,136 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:51,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:51,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:51,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:51,140 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:51,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2023-11-06 22:46:51,142 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 22:46:51,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:51,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:51,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:51,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:51,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:51,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:51,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:51,156 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:46:51,158 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:46:51,158 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:46:51,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:51,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:51,159 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:51,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2023-11-06 22:46:51,162 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:46:51,162 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:46:51,162 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:46:51,162 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-06 22:46:51,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2023-11-06 22:46:51,165 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:46:51,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:51,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:46:51,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:51,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:51,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:51,778 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 22:46:51,779 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 22:46:51,779 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:51,901 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 279 states and 311 transitions. Complement of second has 15 states. [2023-11-06 22:46:51,902 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 22:46:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-06 22:46:51,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-06 22:46:51,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:51,903 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:51,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:51,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:46:51,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:52,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2023-11-06 22:46:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:52,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:52,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:52,534 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 22:46:52,535 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 22:46:52,535 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:52,646 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 279 states and 311 transitions. Complement of second has 15 states. [2023-11-06 22:46:52,647 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 22:46:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-06 22:46:52,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-06 22:46:52,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:52,649 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:52,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:52,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:46:52,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:53,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:53,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:53,212 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 22:46:53,213 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 22:46:53,213 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:53,384 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 410 states and 449 transitions. Complement of second has 27 states. [2023-11-06 22:46:53,384 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 22:46:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-06 22:46:53,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-06 22:46:53,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:53,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-06 22:46:53,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:53,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 59 letters. Loop has 16 letters. [2023-11-06 22:46:53,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:53,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 449 transitions. [2023-11-06 22:46:53,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-06 22:46:53,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 287 states and 318 transitions. [2023-11-06 22:46:53,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2023-11-06 22:46:53,398 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2023-11-06 22:46:53,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 318 transitions. [2023-11-06 22:46:53,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:53,398 INFO L218 hiAutomatonCegarLoop]: Abstraction has 287 states and 318 transitions. [2023-11-06 22:46:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 318 transitions. [2023-11-06 22:46:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 266. [2023-11-06 22:46:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 179 states have (on average 1.094972067039106) internal successors, (196), 191 states have internal predecessors, (196), 48 states have call successors, (52), 39 states have call predecessors, (52), 39 states have return successors, (48), 35 states have call predecessors, (48), 39 states have call successors, (48) [2023-11-06 22:46:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2023-11-06 22:46:53,410 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 296 transitions. [2023-11-06 22:46:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:46:53,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:46:53,411 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 21 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 11 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-06 22:46:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:53,899 INFO L93 Difference]: Finished difference Result 315 states and 364 transitions. [2023-11-06 22:46:53,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 364 transitions. [2023-11-06 22:46:53,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-06 22:46:53,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 289 states and 332 transitions. [2023-11-06 22:46:53,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2023-11-06 22:46:53,907 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 168 [2023-11-06 22:46:53,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 289 states and 332 transitions. [2023-11-06 22:46:53,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:46:53,908 INFO L218 hiAutomatonCegarLoop]: Abstraction has 289 states and 332 transitions. [2023-11-06 22:46:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states and 332 transitions. [2023-11-06 22:46:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 264. [2023-11-06 22:46:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 176 states have (on average 1.0965909090909092) internal successors, (193), 188 states have internal predecessors, (193), 50 states have call successors, (53), 39 states have call predecessors, (53), 38 states have return successors, (53), 36 states have call predecessors, (53), 38 states have call successors, (53) [2023-11-06 22:46:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 299 transitions. [2023-11-06 22:46:53,917 INFO L240 hiAutomatonCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-06 22:46:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:46:53,918 INFO L428 stractBuchiCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-06 22:46:53,918 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-06 22:46:53,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 299 transitions. [2023-11-06 22:46:53,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-06 22:46:53,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:46:53,921 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:46:53,922 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:53,922 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:53,922 INFO L748 eck$LassoCheckResult]: Stem: 17420#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17385#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 17386#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17424#$Ultimate##0 ~n := #in~n; 17518#L10 assume !(~n < 1); 17516#L12 assume !(1 == ~n); 17513#L15 call #t~ret4 := fibo2(~n - 1);< 17514#$Ultimate##0 ~n := #in~n; 17526#L20 assume !(~n < 1); 17524#L22 assume !(1 == ~n); 17521#L25 call #t~ret6 := fibo1(~n - 1);< 17522#$Ultimate##0 ~n := #in~n; 17534#L10 assume !(~n < 1); 17532#L12 assume !(1 == ~n); 17529#L15 call #t~ret4 := fibo2(~n - 1);< 17530#$Ultimate##0 ~n := #in~n; 17544#L20 assume !(~n < 1); 17541#L22 assume !(1 == ~n); 17414#L25 call #t~ret6 := fibo1(~n - 1);< 17540#$Ultimate##0 ~n := #in~n; 17559#L10 assume !(~n < 1); 17492#L12 assume !(1 == ~n); 17413#L15 call #t~ret4 := fibo2(~n - 1);< 17415#$Ultimate##0 ~n := #in~n; 17555#L20 assume !(~n < 1); 17554#L22 assume 1 == ~n;#res := 1; 17553#fibo2FINAL assume true; 17552#fibo2EXIT >#52#return; 17548#L15-1 call #t~ret5 := fibo2(~n - 2);< 17549#$Ultimate##0 ~n := #in~n; 17551#L20 assume ~n < 1;#res := 0; 17550#fibo2FINAL assume true; 17547#fibo2EXIT >#54#return; 17546#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17543#fibo1FINAL assume true; 17539#fibo1EXIT >#48#return; 17536#L25-1 call #t~ret7 := fibo1(~n - 2);< 17537#$Ultimate##0 ~n := #in~n; 17545#L10 assume !(~n < 1); 17542#L12 assume 1 == ~n;#res := 1; 17538#fibo1FINAL assume true; 17535#fibo1EXIT >#50#return; 17533#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17531#fibo2FINAL assume true; 17528#fibo2EXIT >#52#return; 17372#L15-1 call #t~ret5 := fibo2(~n - 2);< 17503#$Ultimate##0 ~n := #in~n; 17504#L20 assume !(~n < 1); 17595#L22 assume !(1 == ~n); 17394#L25 call #t~ret6 := fibo1(~n - 1);< 17593#$Ultimate##0 ~n := #in~n; 17610#L10 assume !(~n < 1); 17608#L12 assume !(1 == ~n); 17402#L15 call #t~ret4 := fibo2(~n - 1);< 17417#$Ultimate##0 ~n := #in~n; 17489#L20 assume !(~n < 1); 17490#L22 assume !(1 == ~n); 17389#L25 call #t~ret6 := fibo1(~n - 1);< 17388#$Ultimate##0 ~n := #in~n; 17390#L10 assume !(~n < 1); 17486#L12 assume !(1 == ~n); 17483#L15 [2023-11-06 22:46:53,922 INFO L750 eck$LassoCheckResult]: Loop: 17483#L15 call #t~ret4 := fibo2(~n - 1);< 17484#$Ultimate##0 ~n := #in~n; 17489#L20 assume !(~n < 1); 17490#L22 assume !(1 == ~n); 17389#L25 call #t~ret6 := fibo1(~n - 1);< 17388#$Ultimate##0 ~n := #in~n; 17390#L10 assume !(~n < 1); 17486#L12 assume !(1 == ~n); 17483#L15 [2023-11-06 22:46:53,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1632318521, now seen corresponding path program 2 times [2023-11-06 22:46:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242961398] [2023-11-06 22:46:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:46:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:54,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:54,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:46:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:46:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:46:54,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:54,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242961398] [2023-11-06 22:46:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242961398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:54,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562887950] [2023-11-06 22:46:54,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:46:54,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,140 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-11-06 22:46:54,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:46:54,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:46:54,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:46:54,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:46:54,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:46:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562887950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:54,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 16 [2023-11-06 22:46:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65325827] [2023-11-06 22:46:54,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:54,447 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:46:54,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2023-11-06 22:46:54,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:54,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463040221] [2023-11-06 22:46:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:54,450 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:54,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:54,590 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:54,590 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:54,590 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:54,590 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:54,590 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:46:54,590 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,591 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:54,591 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:54,591 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration9_Loop [2023-11-06 22:46:54,591 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:54,591 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:54,592 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 22:46:54,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:54,602 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 22:46:54,605 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 22:46:54,607 INFO 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 22:46:54,610 INFO 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 22:46:54,612 INFO 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 22:46:54,614 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 22:46:54,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:54,689 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:46:54,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,693 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-06 22:46:54,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:54,710 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 22:46:54,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:54,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,714 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-06 22:46:54,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:54,729 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 22:46:54,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2023-11-06 22:46:54,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,732 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-06 22:46:54,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,746 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:54,747 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 22:46:54,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:54,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,750 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-06 22:46:54,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:54,764 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 22:46:54,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2023-11-06 22:46:54,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,768 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-06 22:46:54,790 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:54,790 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 22:46:54,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2023-11-06 22:46:54,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,793 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-06 22:46:54,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:54,809 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 22:46:54,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2023-11-06 22:46:54,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,813 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-06 22:46:54,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:46:54,834 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 22:46:54,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:54,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,838 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-06 22:46:54,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:46:54,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:54,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:54,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:54,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:54,865 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:54,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2023-11-06 22:46:54,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:46:54,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:46:57,302 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:46:57,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:57,306 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:46:57,306 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:46:57,306 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:46:57,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:46:57,307 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:46:57,307 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,307 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:46:57,307 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:46:57,307 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration9_Loop [2023-11-06 22:46:57,307 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:46:57,307 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:46:57,308 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:57,313 INFO 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 22:46:57,314 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:57,316 INFO 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 22:46:57,318 INFO 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 22:46:57,320 INFO 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 22:46:57,322 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:57,324 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:46:57,392 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:46:57,392 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:46:57,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,394 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2023-11-06 22:46:57,405 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 22:46:57,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,417 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:57,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:57,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,421 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2023-11-06 22:46:57,424 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 22:46:57,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,436 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:57,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2023-11-06 22:46:57,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,440 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2023-11-06 22:46:57,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:46:57,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,453 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,453 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,478 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:57,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:57,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,483 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2023-11-06 22:46:57,488 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 22:46:57,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,498 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,501 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:57,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2023-11-06 22:46:57,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,505 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2023-11-06 22:46:57,507 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 22:46:57,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,520 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:57,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2023-11-06 22:46:57,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,524 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,533 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 22:46:57,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,546 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,547 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2023-11-06 22:46:57,556 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:57,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2023-11-06 22:46:57,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,561 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,563 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 22:46:57,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2023-11-06 22:46:57,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,576 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:46:57,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2023-11-06 22:46:57,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,580 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2023-11-06 22:46:57,582 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 22:46:57,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:46:57,593 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:46:57,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:46:57,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:46:57,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:46:57,594 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:46:57,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:46:57,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:46:57,599 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:46:57,599 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:46:57,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:46:57,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:57,602 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:57,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2023-11-06 22:46:57,603 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:46:57,603 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:46:57,603 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:46:57,603 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:46:57,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:57,607 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:46:57,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:57,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:46:57,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:58,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:58,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:58,100 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 22:46:58,101 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 22:46:58,101 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:58,222 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 288 states and 323 transitions. Complement of second has 19 states. [2023-11-06 22:46:58,223 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 22:46:58,223 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 22:46:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2023-11-06 22:46:58,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-06 22:46:58,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:58,224 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:58,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:58,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:46:58,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:58,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:58,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:58,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:58,767 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 22:46:58,768 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 22:46:58,768 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:58,914 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 288 states and 323 transitions. Complement of second has 21 states. [2023-11-06 22:46:58,918 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 22:46:58,919 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 22:46:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2023-11-06 22:46:58,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-06 22:46:58,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:58,919 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:46:58,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:59,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:46:59,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:59,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:46:59,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:59,475 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 22:46:59,476 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 22:46:59,477 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:59,648 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 573 states and 653 transitions. Complement of second has 33 states. [2023-11-06 22:46:59,649 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 22:46:59,650 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 22:46:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-06 22:46:59,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-06 22:46:59,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:59,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-06 22:46:59,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:59,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 16 letters. [2023-11-06 22:46:59,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:46:59,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 573 states and 653 transitions. [2023-11-06 22:46:59,661 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:46:59,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 573 states to 0 states and 0 transitions. [2023-11-06 22:46:59,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:46:59,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:46:59,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:46:59,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:59,662 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:46:59,662 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:46:59,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:46:59,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:46:59,663 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 10 states have internal predecessors, (40), 8 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:46:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:59,663 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-06 22:46:59,663 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-06 22:46:59,664 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:46:59,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:46:59,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:46:59,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:46:59,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:46:59,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:59,665 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:46:59,665 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:46:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:46:59,665 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:46:59,665 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-06 22:46:59,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:46:59,666 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:46:59,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 22:46:59,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:46:59 BoogieIcfgContainer [2023-11-06 22:46:59,675 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:46:59,676 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:46:59,676 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:46:59,676 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:46:59,677 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:30" (3/4) ... [2023-11-06 22:46:59,679 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:46:59,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:46:59,682 INFO L158 Benchmark]: Toolchain (without parser) took 29548.48ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 113.9MB in the beginning and 167.7MB in the end (delta: -53.9MB). Peak memory consumption was 116.4MB. Max. memory is 16.1GB. [2023-11-06 22:46:59,682 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:46:59,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.48ms. Allocated memory is still 155.2MB. Free memory was 113.9MB in the beginning and 119.1MB in the end (delta: -5.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:46:59,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.06ms. Allocated memory is still 155.2MB. Free memory was 119.1MB in the beginning and 117.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:46:59,683 INFO L158 Benchmark]: Boogie Preprocessor took 20.07ms. Allocated memory is still 155.2MB. Free memory was 117.6MB in the beginning and 116.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:46:59,684 INFO L158 Benchmark]: RCFGBuilder took 308.45ms. Allocated memory is still 155.2MB. Free memory was 116.5MB in the beginning and 106.7MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:46:59,684 INFO L158 Benchmark]: BuchiAutomizer took 28832.58ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 106.5MB in the beginning and 167.7MB in the end (delta: -61.2MB). Peak memory consumption was 113.9MB. Max. memory is 16.1GB. [2023-11-06 22:46:59,685 INFO L158 Benchmark]: Witness Printer took 5.12ms. Allocated memory is still 325.1MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:46:59,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.48ms. Allocated memory is still 155.2MB. Free memory was 113.9MB in the beginning and 119.1MB in the end (delta: -5.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.06ms. Allocated memory is still 155.2MB. Free memory was 119.1MB in the beginning and 117.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.07ms. Allocated memory is still 155.2MB. Free memory was 117.6MB in the beginning and 116.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 308.45ms. Allocated memory is still 155.2MB. Free memory was 116.5MB in the beginning and 106.7MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 28832.58ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 106.5MB in the beginning and 167.7MB in the end (delta: -61.2MB). Peak memory consumption was 113.9MB. Max. memory is 16.1GB. * Witness Printer took 5.12ms. Allocated memory is still 325.1MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (8 trivial, 2 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 28.7s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 15.2s. Construction of modules took 2.5s. Büchi inclusion checks took 10.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 12. Automata minimization 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 408 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1158 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1122 mSDsluCounter, 1799 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1337 mSDsCounter, 603 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3043 IncrementalHoareTripleChecker+Invalid, 3646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 603 mSolverCounterUnsat, 462 mSDtfsCounter, 3043 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf93 smp66 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 30 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.9s 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 22:46:59,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:59,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-11-06 22:47:00,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:00,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-06 22:47:00,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-06 22:47:00,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-06 22:47:00,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:01,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:01,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-06 22:47:01,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05562882-6675-4b48-a157-d58c381ee1ca/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