./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:41:55,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:41:55,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-23 22:41:55,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:41:55,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:41:55,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:41:55,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:41:55,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:41:55,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:41:55,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:41:55,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:41:55,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:41:55,513 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:41:55,514 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-23 22:41:55,514 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-23 22:41:55,515 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-23 22:41:55,515 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-23 22:41:55,516 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-23 22:41:55,516 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-23 22:41:55,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:41:55,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-23 22:41:55,518 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:41:55,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:41:55,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:41:55,519 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:41:55,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-23 22:41:55,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-23 22:41:55,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-23 22:41:55,521 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:41:55,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:41:55,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:41:55,523 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-23 22:41:55,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:41:55,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:41:55,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:41:55,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:41:55,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:41:55,525 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-23 22:41:55,525 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_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2023-11-23 22:41:55,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:41:55,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:41:55,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:41:55,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:41:55,902 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:41:55,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2023-11-23 22:41:59,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:41:59,259 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:41:59,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2023-11-23 22:41:59,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/data/b3b343408/b45dfc6a81e64d8b86cbf12f65f6fc01/FLAG3b52b355e [2023-11-23 22:41:59,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/data/b3b343408/b45dfc6a81e64d8b86cbf12f65f6fc01 [2023-11-23 22:41:59,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:41:59,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:41:59,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:59,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:41:59,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:41:59,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c6aa1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59, skipping insertion in model container [2023-11-23 22:41:59,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:41:59,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:59,493 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:41:59,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:59,573 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:41:59,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59 WrapperNode [2023-11-23 22:41:59,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:59,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:59,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:41:59,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:41:59,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,622 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-23 22:41:59,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:59,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:41:59,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:41:59,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:41:59,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,637 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,648 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:41:59,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:41:59,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:41:59,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:41:59,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:41:59,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (1/1) ... [2023-11-23 22:41:59,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:41:59,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:41:59,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:41:59,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-23 22:41:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:41:59,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:41:59,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:41:59,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:41:59,766 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-11-23 22:41:59,766 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-11-23 22:41:59,850 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:41:59,852 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:41:59,943 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:41:59,952 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:41:59,952 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:41:59,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:59 BoogieIcfgContainer [2023-11-23 22:41:59,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:41:59,955 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-23 22:41:59,955 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-23 22:41:59,959 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-23 22:41:59,960 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:41:59,961 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 10:41:59" (1/3) ... [2023-11-23 22:41:59,962 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@737b143f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:41:59, skipping insertion in model container [2023-11-23 22:41:59,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:41:59,962 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:59" (2/3) ... [2023-11-23 22:41:59,962 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@737b143f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:41:59, skipping insertion in model container [2023-11-23 22:41:59,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:41:59,963 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:59" (3/3) ... [2023-11-23 22:41:59,964 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_5-1.c [2023-11-23 22:42:00,021 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-23 22:42:00,021 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-23 22:42:00,021 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-23 22:42:00,021 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-23 22:42:00,021 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-23 22:42:00,021 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-23 22:42:00,022 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-23 22:42:00,022 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-23 22:42:00,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:00,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:00,049 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:00,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:00,056 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-23 22:42:00,056 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-23 22:42:00,056 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-23 22:42:00,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:00,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:00,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:00,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:00,060 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-23 22:42:00,060 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-23 22:42:00,068 INFO L748 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2023-11-23 22:42:00,068 INFO L750 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2023-11-23 22:42:00,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2023-11-23 22:42:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565915533] [2023-11-23 22:42:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:00,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:00,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:00,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2023-11-23 22:42:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458350603] [2023-11-23 22:42:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:00,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:00,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:00,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:00,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2023-11-23 22:42:00,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:00,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253462393] [2023-11-23 22:42:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:00,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:00,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:00,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:00,427 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:00,428 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:00,428 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:00,428 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:00,429 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:42:00,429 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,429 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:00,430 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:00,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration1_Loop [2023-11-23 22:42:00,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:00,430 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:00,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,462 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,483 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,570 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:00,571 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:42:00,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:00,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:00,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-23 22:42:00,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:00,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:00,621 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:42:00,621 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:42:00,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:00,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:00,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:00,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-23 22:42:00,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:00,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:00,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:42:00,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:42:00,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:00,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:00,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:00,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-23 22:42:00,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:00,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:00,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:42:00,726 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:42:00,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:00,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:00,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:00,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:00,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:00,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-23 22:42:00,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:00,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:00,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:00,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-23 22:42:00,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:42:00,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:00,882 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:42:00,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:00,887 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:00,887 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:00,887 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:00,887 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:00,887 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:42:00,887 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,887 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:00,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:00,888 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration1_Loop [2023-11-23 22:42:00,888 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:00,888 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:00,890 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,897 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,924 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:00,989 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:00,995 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:42:00,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:00,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:00,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:01,008 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 [2023-11-23 22:42:01,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-23 22:42:01,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:01,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:01,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:01,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:01,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:01,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:01,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:01,040 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:01,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:01,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:01,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:01,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:01,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-23 22:42:01,067 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 [2023-11-23 22:42:01,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:01,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:01,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:01,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:01,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:01,079 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:01,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:01,102 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:01,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:01,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:01,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:01,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:01,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-23 22:42:01,131 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 [2023-11-23 22:42:01,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:01,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:01,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:01,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:01,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:01,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:01,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:01,159 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:01,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:01,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:01,175 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:01,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-23 22:42:01,176 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 [2023-11-23 22:42:01,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:01,187 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:01,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:01,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:01,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:01,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:01,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:01,204 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:42:01,208 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 22:42:01,208 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-23 22:42:01,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:01,247 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:01,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-23 22:42:01,249 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:42:01,249 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:42:01,249 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:42:01,250 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2023-11-23 22:42:01,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:01,276 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:42:01,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:01,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:42:01,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:01,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:42:01,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:01,548 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-23 22:42:01,550 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:01,699 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 49 states and 61 transitions. Complement of second has 12 states. [2023-11-23 22:42:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-23 22:42:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-11-23 22:42:01,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-23 22:42:01,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:01,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-23 22:42:01,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:01,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-23 22:42:01,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:01,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2023-11-23 22:42:01,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:01,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 25 states and 34 transitions. [2023-11-23 22:42:01,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-23 22:42:01,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-23 22:42:01,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2023-11-23 22:42:01,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:01,748 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-11-23 22:42:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2023-11-23 22:42:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2023-11-23 22:42:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 22:42:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-11-23 22:42:01,788 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-23 22:42:01,789 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-23 22:42:01,789 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-23 22:42:01,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2023-11-23 22:42:01,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:01,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:01,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:01,794 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:01,794 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:01,795 INFO L748 eck$LassoCheckResult]: Stem: 138#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 124#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 127#L13 call #t~ret4 := fibo(~n - 1);< 126#$Ultimate##0 ~n := #in~n; 128#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#35#return; 130#L13-1 [2023-11-23 22:42:01,796 INFO L750 eck$LassoCheckResult]: Loop: 130#L13-1 call #t~ret5 := fibo(~n - 2);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume !(~n < 1); 142#L10 assume !(1 == ~n); 129#L13 call #t~ret4 := fibo(~n - 1);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume ~n < 1;#res := 0; 133#fiboFINAL assume true; 140#fiboEXIT >#35#return; 130#L13-1 [2023-11-23 22:42:01,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2023-11-23 22:42:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:01,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220912308] [2023-11-23 22:42:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:01,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:42:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:42:02,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:02,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220912308] [2023-11-23 22:42:02,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220912308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:02,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:02,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:42:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767449622] [2023-11-23 22:42:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:02,040 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:42:02,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:02,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2023-11-23 22:42:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091840497] [2023-11-23 22:42:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:02,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:42:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:42:02,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091840497] [2023-11-23 22:42:02,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091840497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:02,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:02,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:42:02,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905231426] [2023-11-23 22:42:02,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:02,250 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 22:42:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:42:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:42:02,255 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:02,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:02,374 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-11-23 22:42:02,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2023-11-23 22:42:02,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:02,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2023-11-23 22:42:02,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-23 22:42:02,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-23 22:42:02,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2023-11-23 22:42:02,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:02,393 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-23 22:42:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2023-11-23 22:42:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 22:42:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 22:42:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-23 22:42:02,402 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-23 22:42:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:42:02,403 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-23 22:42:02,404 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-23 22:42:02,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2023-11-23 22:42:02,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:02,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:02,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:02,408 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:02,408 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:02,409 INFO L748 eck$LassoCheckResult]: Stem: 209#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 210#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 197#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 196#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 212#L10 assume !(1 == ~n); 200#L13 call #t~ret4 := fibo(~n - 1);< 199#$Ultimate##0 ~n := #in~n; 201#L8 assume !(~n < 1); 211#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 216#fiboEXIT >#35#return; 203#L13-1 [2023-11-23 22:42:02,409 INFO L750 eck$LassoCheckResult]: Loop: 203#L13-1 call #t~ret5 := fibo(~n - 2);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume !(1 == ~n); 204#L13 call #t~ret4 := fibo(~n - 1);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume 1 == ~n;#res := 1; 218#fiboFINAL assume true; 214#fiboEXIT >#35#return; 203#L13-1 [2023-11-23 22:42:02,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2023-11-23 22:42:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:02,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312484206] [2023-11-23 22:42:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:02,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:42:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312484206] [2023-11-23 22:42:02,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312484206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:42:02,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742797350] [2023-11-23 22:42:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:02,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:42:02,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:02,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:42:02,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 22:42:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:42:02,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:02,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:42:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742797350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:42:02,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:42:02,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-23 22:42:02,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688685898] [2023-11-23 22:42:02,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:42:02,812 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:42:02,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2023-11-23 22:42:02,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834392135] [2023-11-23 22:42:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:02,820 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:02,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:02,957 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:02,957 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:02,957 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:02,958 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:02,958 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:42:02,958 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:02,958 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:02,958 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:02,958 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration3_Loop [2023-11-23 22:42:02,959 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:02,959 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:02,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:02,963 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:02,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:02,972 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:02,975 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:03,017 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:03,017 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:42:03,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:03,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:03,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-23 22:42:03,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:42:03,056 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:42:03,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,084 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:03,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:03,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-23 22:42:03,114 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:42:03,115 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:42:03,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,143 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:03,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:03,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-23 22:42:03,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:42:03,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:03,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-23 22:42:03,231 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:42:03,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,247 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:03,247 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:03,247 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:03,247 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:03,247 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:42:03,247 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,247 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:03,247 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:03,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration3_Loop [2023-11-23 22:42:03,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:03,248 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:03,249 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:03,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:03,257 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:03,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:03,266 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:03,313 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:03,313 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:42:03,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,315 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,323 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 [2023-11-23 22:42:03,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-23 22:42:03,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:03,337 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:03,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:03,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:03,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:03,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:03,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:03,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:03,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,364 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-23 22:42:03,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:42:03,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:03,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:03,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:03,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:03,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:03,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:03,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:03,386 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:03,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-23 22:42:03,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-23 22:42:03,406 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:42:03,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:03,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:03,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:03,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:03,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:03,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:03,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:03,419 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:03,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,436 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-23 22:42:03,440 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 [2023-11-23 22:42:03,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:03,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:03,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:03,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:03,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:03,453 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:03,453 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:03,486 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:42:03,488 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-23 22:42:03,489 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 22:42:03,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:03,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:03,494 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:03,504 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:42:03,504 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:42:03,504 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:42:03,504 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-23 22:42:03,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-23 22:42:03,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,530 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:42:03,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:03,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:42:03,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:03,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:42:03,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:03,761 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 [2023-11-23 22:42:03,761 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:42:04,017 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2023-11-23 22:42:04,018 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 [2023-11-23 22:42:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:42:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2023-11-23 22:42:04,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2023-11-23 22:42:04,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:04,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2023-11-23 22:42:04,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:04,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2023-11-23 22:42:04,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:04,027 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2023-11-23 22:42:04,033 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-23 22:42:04,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2023-11-23 22:42:04,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2023-11-23 22:42:04,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2023-11-23 22:42:04,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2023-11-23 22:42:04,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:04,056 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2023-11-23 22:42:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2023-11-23 22:42:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2023-11-23 22:42:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2023-11-23 22:42:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2023-11-23 22:42:04,078 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2023-11-23 22:42:04,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 22:42:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:42:04,079 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:42:04,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:04,258 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2023-11-23 22:42:04,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2023-11-23 22:42:04,273 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-23 22:42:04,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2023-11-23 22:42:04,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2023-11-23 22:42:04,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2023-11-23 22:42:04,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2023-11-23 22:42:04,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:04,284 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2023-11-23 22:42:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2023-11-23 22:42:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2023-11-23 22:42:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2023-11-23 22:42:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2023-11-23 22:42:04,300 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-23 22:42:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:42:04,301 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-23 22:42:04,301 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-23 22:42:04,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2023-11-23 22:42:04,303 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-23 22:42:04,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:04,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:04,306 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:04,306 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-23 22:42:04,306 INFO L748 eck$LassoCheckResult]: Stem: 820#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 821#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 805#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 806#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 825#L10 assume !(1 == ~n); 793#L13 call #t~ret4 := fibo(~n - 1);< 792#$Ultimate##0 ~n := #in~n; 794#L8 assume !(~n < 1); 831#L10 assume !(1 == ~n); 803#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 854#L8 assume !(~n < 1); 852#L10 assume 1 == ~n;#res := 1; 850#fiboFINAL assume true; 849#fiboEXIT >#35#return; 796#L13-1 call #t~ret5 := fibo(~n - 2);< 848#$Ultimate##0 ~n := #in~n; 822#L8 assume ~n < 1;#res := 0; 823#fiboFINAL assume true; 890#fiboEXIT >#37#return; 889#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 887#fiboFINAL assume true; 879#fiboEXIT >#35#return; 829#L13-1 [2023-11-23 22:42:04,307 INFO L750 eck$LassoCheckResult]: Loop: 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume ~n < 1;#res := 0; 885#fiboFINAL assume true; 883#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#35#return; 829#L13-1 [2023-11-23 22:42:04,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2023-11-23 22:42:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:04,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357187240] [2023-11-23 22:42:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:04,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:04,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:04,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2033249087, now seen corresponding path program 1 times [2023-11-23 22:42:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:04,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481708313] [2023-11-23 22:42:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:04,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:42:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:42:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:42:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 22:42:04,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481708313] [2023-11-23 22:42:04,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481708313] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:42:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773012525] [2023-11-23 22:42:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:42:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:04,523 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:42:04,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 22:42:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:42:04,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 22:42:04,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:42:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 22:42:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773012525] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:42:04,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:42:04,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-23 22:42:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901586365] [2023-11-23 22:42:04,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:42:04,858 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 22:42:04,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 22:42:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:42:04,861 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 22:42:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:04,971 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2023-11-23 22:42:04,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 77 transitions. [2023-11-23 22:42:04,973 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:04,978 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 54 states and 70 transitions. [2023-11-23 22:42:04,978 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2023-11-23 22:42:04,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2023-11-23 22:42:04,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 70 transitions. [2023-11-23 22:42:04,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:04,979 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2023-11-23 22:42:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 70 transitions. [2023-11-23 22:42:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-23 22:42:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-23 22:42:04,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2023-11-23 22:42:04,996 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2023-11-23 22:42:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:42:05,005 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 70 transitions. [2023-11-23 22:42:05,005 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-23 22:42:05,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 70 transitions. [2023-11-23 22:42:05,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:05,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:05,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:05,011 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:05,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-23 22:42:05,012 INFO L748 eck$LassoCheckResult]: Stem: 1263#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1264#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1257#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1258#$Ultimate##0 ~n := #in~n; 1273#L8 assume !(~n < 1); 1272#L10 assume !(1 == ~n); 1245#L13 call #t~ret4 := fibo(~n - 1);< 1244#$Ultimate##0 ~n := #in~n; 1246#L8 assume !(~n < 1); 1266#L10 assume !(1 == ~n); 1250#L13 call #t~ret4 := fibo(~n - 1);< 1251#$Ultimate##0 ~n := #in~n; 1271#L8 assume !(~n < 1); 1288#L10 assume !(1 == ~n); 1261#L13 call #t~ret4 := fibo(~n - 1);< 1251#$Ultimate##0 ~n := #in~n; 1271#L8 assume !(~n < 1); 1288#L10 assume !(1 == ~n); 1261#L13 call #t~ret4 := fibo(~n - 1);< 1251#$Ultimate##0 ~n := #in~n; 1270#L8 assume !(~n < 1); 1267#L10 assume 1 == ~n;#res := 1; 1268#fiboFINAL assume true; 1260#fiboEXIT >#35#return; 1262#L13-1 call #t~ret5 := fibo(~n - 2);< 1287#$Ultimate##0 ~n := #in~n; 1291#L8 assume ~n < 1;#res := 0; 1289#fiboFINAL assume true; 1286#fiboEXIT >#37#return; 1284#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1282#fiboFINAL assume true; 1279#fiboEXIT >#35#return; 1255#L13-1 [2023-11-23 22:42:05,012 INFO L750 eck$LassoCheckResult]: Loop: 1255#L13-1 call #t~ret5 := fibo(~n - 2);< 1249#$Ultimate##0 ~n := #in~n; 1294#L8 assume !(~n < 1); 1292#L10 assume !(1 == ~n); 1254#L13 call #t~ret4 := fibo(~n - 1);< 1249#$Ultimate##0 ~n := #in~n; 1294#L8 assume !(~n < 1); 1292#L10 assume !(1 == ~n); 1254#L13 call #t~ret4 := fibo(~n - 1);< 1249#$Ultimate##0 ~n := #in~n; 1294#L8 assume !(~n < 1); 1292#L10 assume !(1 == ~n); 1254#L13 call #t~ret4 := fibo(~n - 1);< 1249#$Ultimate##0 ~n := #in~n; 1294#L8 assume !(~n < 1); 1292#L10 assume 1 == ~n;#res := 1; 1293#fiboFINAL assume true; 1290#fiboEXIT >#35#return; 1242#L13-1 call #t~ret5 := fibo(~n - 2);< 1241#$Ultimate##0 ~n := #in~n; 1243#L8 assume ~n < 1;#res := 0; 1265#fiboFINAL assume true; 1285#fiboEXIT >#37#return; 1252#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1256#fiboFINAL assume true; 1259#fiboEXIT >#35#return; 1255#L13-1 call #t~ret5 := fibo(~n - 2);< 1249#$Ultimate##0 ~n := #in~n; 1294#L8 assume ~n < 1;#res := 0; 1265#fiboFINAL assume true; 1285#fiboEXIT >#37#return; 1278#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1283#fiboFINAL assume true; 1280#fiboEXIT >#35#return; 1255#L13-1 [2023-11-23 22:42:05,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 2 times [2023-11-23 22:42:05,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:05,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380943999] [2023-11-23 22:42:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:05,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:05,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:05,065 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:05,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1083596768, now seen corresponding path program 2 times [2023-11-23 22:42:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:05,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387685834] [2023-11-23 22:42:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 22:42:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:05,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:42:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:42:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 22:42:05,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387685834] [2023-11-23 22:42:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387685834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:42:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42979431] [2023-11-23 22:42:05,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:42:05,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:42:05,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:05,329 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:42:05,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 22:42:05,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:42:05,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:42:05,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:42:05,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 22:42:05,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:42:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:42:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42979431] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:42:05,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:42:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2023-11-23 22:42:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135785686] [2023-11-23 22:42:05,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:42:05,780 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 22:42:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:42:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:42:05,781 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:42:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:05,886 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2023-11-23 22:42:05,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2023-11-23 22:42:05,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:05,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 54 states and 67 transitions. [2023-11-23 22:42:05,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2023-11-23 22:42:05,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2023-11-23 22:42:05,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 67 transitions. [2023-11-23 22:42:05,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:05,890 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-11-23 22:42:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 67 transitions. [2023-11-23 22:42:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-23 22:42:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-23 22:42:05,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-11-23 22:42:05,895 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-11-23 22:42:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:42:05,896 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-11-23 22:42:05,897 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-23 22:42:05,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 67 transitions. [2023-11-23 22:42:05,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 22:42:05,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:05,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:05,899 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:05,900 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-23 22:42:05,900 INFO L748 eck$LassoCheckResult]: Stem: 1649#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1650#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1644#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1645#$Ultimate##0 ~n := #in~n; 1661#L8 assume !(~n < 1); 1660#L10 assume !(1 == ~n); 1632#L13 call #t~ret4 := fibo(~n - 1);< 1631#$Ultimate##0 ~n := #in~n; 1633#L8 assume !(~n < 1); 1681#L10 assume !(1 == ~n); 1637#L13 call #t~ret4 := fibo(~n - 1);< 1638#$Ultimate##0 ~n := #in~n; 1652#L8 assume !(~n < 1); 1653#L10 assume !(1 == ~n); 1648#L13 call #t~ret4 := fibo(~n - 1);< 1638#$Ultimate##0 ~n := #in~n; 1652#L8 assume !(~n < 1); 1653#L10 assume !(1 == ~n); 1648#L13 call #t~ret4 := fibo(~n - 1);< 1638#$Ultimate##0 ~n := #in~n; 1659#L8 assume !(~n < 1); 1654#L10 assume 1 == ~n;#res := 1; 1655#fiboFINAL assume true; 1647#fiboEXIT >#35#return; 1629#L13-1 call #t~ret5 := fibo(~n - 2);< 1628#$Ultimate##0 ~n := #in~n; 1630#L8 assume ~n < 1;#res := 0; 1651#fiboFINAL assume true; 1675#fiboEXIT >#37#return; 1673#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1671#fiboFINAL assume true; 1668#fiboEXIT >#35#return; 1640#L13-1 [2023-11-23 22:42:05,900 INFO L750 eck$LassoCheckResult]: Loop: 1640#L13-1 call #t~ret5 := fibo(~n - 2);< 1636#$Ultimate##0 ~n := #in~n; 1663#L8 assume !(~n < 1); 1678#L10 assume !(1 == ~n); 1642#L13 call #t~ret4 := fibo(~n - 1);< 1636#$Ultimate##0 ~n := #in~n; 1663#L8 assume !(~n < 1); 1678#L10 assume !(1 == ~n); 1642#L13 call #t~ret4 := fibo(~n - 1);< 1636#$Ultimate##0 ~n := #in~n; 1663#L8 assume !(~n < 1); 1678#L10 assume !(1 == ~n); 1642#L13 call #t~ret4 := fibo(~n - 1);< 1636#$Ultimate##0 ~n := #in~n; 1663#L8 assume !(~n < 1); 1678#L10 assume 1 == ~n;#res := 1; 1679#fiboFINAL assume true; 1674#fiboEXIT >#35#return; 1656#L13-1 call #t~ret5 := fibo(~n - 2);< 1657#$Ultimate##0 ~n := #in~n; 1680#L8 assume ~n < 1;#res := 0; 1677#fiboFINAL assume true; 1676#fiboEXIT >#37#return; 1639#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1643#fiboFINAL assume true; 1646#fiboEXIT >#35#return; 1640#L13-1 call #t~ret5 := fibo(~n - 2);< 1636#$Ultimate##0 ~n := #in~n; 1663#L8 assume !(~n < 1); 1678#L10 assume 1 == ~n;#res := 1; 1679#fiboFINAL assume true; 1674#fiboEXIT >#37#return; 1665#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1672#fiboFINAL assume true; 1669#fiboEXIT >#35#return; 1640#L13-1 [2023-11-23 22:42:05,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 3 times [2023-11-23 22:42:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356349313] [2023-11-23 22:42:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:05,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:05,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:05,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash -29214273, now seen corresponding path program 3 times [2023-11-23 22:42:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564737754] [2023-11-23 22:42:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:05,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:05,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:05,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:05,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1808409190, now seen corresponding path program 4 times [2023-11-23 22:42:05,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:05,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796676699] [2023-11-23 22:42:05,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:05,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 22:42:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:42:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 22:42:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:42:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:42:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 34 proven. 93 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 22:42:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796676699] [2023-11-23 22:42:06,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796676699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:42:06,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223034860] [2023-11-23 22:42:06,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 22:42:06,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:42:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:06,150 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:42:06,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-23 22:42:06,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 22:42:06,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:42:06,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 22:42:06,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 58 proven. 101 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-23 22:42:06,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:42:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 58 proven. 101 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-23 22:42:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223034860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:42:06,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:42:06,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2023-11-23 22:42:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524063604] [2023-11-23 22:42:06,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:42:06,924 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:06,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:06,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:06,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:06,925 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:42:06,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:06,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:06,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:06,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration6_Loop [2023-11-23 22:42:06,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:06,926 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:06,927 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:06,930 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:06,938 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:06,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:06,945 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:06,992 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:06,993 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:42:06,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:06,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:06,995 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:06,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:06,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:07,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-23 22:42:07,026 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:42:07,026 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:42:07,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:07,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:07,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:07,053 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:07,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:07,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:07,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-23 22:42:07,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:07,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:07,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:07,106 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:07,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:42:07,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:07,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-23 22:42:07,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:42:07,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:07,158 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:07,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:07,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:07,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:07,158 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:42:07,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:07,158 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:07,158 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:07,158 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration6_Loop [2023-11-23 22:42:07,159 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:07,159 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:07,159 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:07,162 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:07,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:07,170 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:07,173 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:07,212 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:07,212 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:42:07,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:07,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:07,214 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:07,223 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 [2023-11-23 22:42:07,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:07,236 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:07,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:07,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:07,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:07,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-23 22:42:07,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:07,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:07,251 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:07,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-23 22:42:07,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:07,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:07,263 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:07,267 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 [2023-11-23 22:42:07,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-23 22:42:07,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:07,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:07,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:07,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:07,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:07,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:07,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:07,293 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:42:07,296 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 22:42:07,296 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-23 22:42:07,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:07,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:07,298 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:07,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-23 22:42:07,299 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:42:07,299 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:42:07,299 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:42:07,299 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-23 22:42:07,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-23 22:42:07,316 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:42:07,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:07,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:42:07,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:07,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 22:42:07,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 22:42:07,869 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 [2023-11-23 22:42:07,869 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 67 transitions. cyclomatic complexity: 15 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:42:07,982 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 67 transitions. cyclomatic complexity: 15. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 61 states and 74 transitions. Complement of second has 11 states. [2023-11-23 22:42:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-23 22:42:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:42:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2023-11-23 22:42:07,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 35 letters. [2023-11-23 22:42:07,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:07,988 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:42:07,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:08,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:42:08,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:08,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:08,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 22:42:08,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 22:42:08,513 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 [2023-11-23 22:42:08,515 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 67 transitions. cyclomatic complexity: 15 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:42:08,624 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 67 transitions. cyclomatic complexity: 15. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 61 states and 74 transitions. Complement of second has 11 states. [2023-11-23 22:42:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-23 22:42:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:42:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2023-11-23 22:42:08,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 35 letters. [2023-11-23 22:42:08,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:08,630 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:42:08,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:08,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:42:08,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:08,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 22:42:08,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 22:42:09,124 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 [2023-11-23 22:42:09,125 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 67 transitions. cyclomatic complexity: 15 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:42:09,464 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 67 transitions. cyclomatic complexity: 15. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 321 states and 401 transitions. Complement of second has 142 states. [2023-11-23 22:42:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2023-11-23 22:42:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:42:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 52 transitions. [2023-11-23 22:42:09,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 32 letters. Loop has 35 letters. [2023-11-23 22:42:09,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:09,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 67 letters. Loop has 35 letters. [2023-11-23 22:42:09,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:09,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 32 letters. Loop has 70 letters. [2023-11-23 22:42:09,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:09,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 401 transitions. [2023-11-23 22:42:09,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-23 22:42:09,488 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 203 states and 261 transitions. [2023-11-23 22:42:09,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2023-11-23 22:42:09,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2023-11-23 22:42:09,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 261 transitions. [2023-11-23 22:42:09,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:09,490 INFO L218 hiAutomatonCegarLoop]: Abstraction has 203 states and 261 transitions. [2023-11-23 22:42:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 261 transitions. [2023-11-23 22:42:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 175. [2023-11-23 22:42:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.1376146788990826) internal successors, (124), 116 states have internal predecessors, (124), 39 states have call successors, (39), 24 states have call predecessors, (39), 27 states have return successors, (49), 34 states have call predecessors, (49), 34 states have call successors, (49) [2023-11-23 22:42:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2023-11-23 22:42:09,504 INFO L240 hiAutomatonCegarLoop]: Abstraction has 175 states and 212 transitions. [2023-11-23 22:42:09,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:09,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 22:42:09,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-23 22:42:09,505 INFO L87 Difference]: Start difference. First operand 175 states and 212 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 8 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-23 22:42:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:09,712 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2023-11-23 22:42:09,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 140 transitions. [2023-11-23 22:42:09,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-23 22:42:09,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 105 states and 117 transitions. [2023-11-23 22:42:09,717 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2023-11-23 22:42:09,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2023-11-23 22:42:09,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 117 transitions. [2023-11-23 22:42:09,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:42:09,718 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 117 transitions. [2023-11-23 22:42:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 117 transitions. [2023-11-23 22:42:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2023-11-23 22:42:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 66 states have internal predecessors, (68), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (21), 15 states have call predecessors, (21), 15 states have call successors, (21) [2023-11-23 22:42:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2023-11-23 22:42:09,724 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 108 transitions. [2023-11-23 22:42:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 22:42:09,725 INFO L428 stractBuchiCegarLoop]: Abstraction has 96 states and 108 transitions. [2023-11-23 22:42:09,725 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-23 22:42:09,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 108 transitions. [2023-11-23 22:42:09,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-23 22:42:09,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:42:09,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:42:09,728 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:09,728 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-23 22:42:09,728 INFO L748 eck$LassoCheckResult]: Stem: 3794#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 3795#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3786#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3787#$Ultimate##0 ~n := #in~n; 3823#L8 assume !(~n < 1); 3822#L10 assume !(1 == ~n); 3817#L13 call #t~ret4 := fibo(~n - 1);< 3821#$Ultimate##0 ~n := #in~n; 3820#L8 assume !(~n < 1); 3819#L10 assume !(1 == ~n); 3772#L13 call #t~ret4 := fibo(~n - 1);< 3770#$Ultimate##0 ~n := #in~n; 3774#L8 assume !(~n < 1); 3797#L10 assume !(1 == ~n); 3771#L13 call #t~ret4 := fibo(~n - 1);< 3770#$Ultimate##0 ~n := #in~n; 3773#L8 assume !(~n < 1); 3840#L10 assume 1 == ~n;#res := 1; 3838#fiboFINAL assume true; 3836#fiboEXIT >#35#return; 3834#L13-1 call #t~ret5 := fibo(~n - 2);< 3835#$Ultimate##0 ~n := #in~n; 3860#L8 assume ~n < 1;#res := 0; 3859#fiboFINAL assume true; 3833#fiboEXIT >#37#return; 3832#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3826#fiboFINAL assume true; 3818#fiboEXIT >#35#return; 3780#L13-1 call #t~ret5 := fibo(~n - 2);< 3816#$Ultimate##0 ~n := #in~n; 3815#L8 assume !(~n < 1); 3814#L10 assume !(1 == ~n); 3776#L13 call #t~ret4 := fibo(~n - 1);< 3844#$Ultimate##0 ~n := #in~n; 3848#L8 assume !(~n < 1); 3847#L10 assume !(1 == ~n); 3775#L13 [2023-11-23 22:42:09,728 INFO L750 eck$LassoCheckResult]: Loop: 3775#L13 call #t~ret4 := fibo(~n - 1);< 3778#$Ultimate##0 ~n := #in~n; 3862#L8 assume !(~n < 1); 3861#L10 assume !(1 == ~n); 3775#L13 [2023-11-23 22:42:09,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash -938289703, now seen corresponding path program 5 times [2023-11-23 22:42:09,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:09,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229260366] [2023-11-23 22:42:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:42:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:42:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:42:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 22:42:09,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229260366] [2023-11-23 22:42:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229260366] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:42:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52646874] [2023-11-23 22:42:09,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 22:42:09,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:42:09,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:09,875 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:42:09,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-23 22:42:09,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-23 22:42:09,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:42:09,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 22:42:09,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 22:42:09,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:42:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 22:42:10,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52646874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:42:10,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:42:10,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 17 [2023-11-23 22:42:10,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529420642] [2023-11-23 22:42:10,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:42:10,204 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:42:10,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:10,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1955414, now seen corresponding path program 2 times [2023-11-23 22:42:10,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:10,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645708084] [2023-11-23 22:42:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:10,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:10,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:42:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:42:10,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:42:10,267 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:10,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:10,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:10,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:10,267 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:42:10,267 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:10,267 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:10,267 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:10,267 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration7_Loop [2023-11-23 22:42:10,267 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:10,268 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:10,268 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:10,278 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:10,281 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:10,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:10,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:10,335 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:42:10,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:10,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:10,337 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:10,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:42:10,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:10,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-23 22:42:10,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:10,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:10,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:10,382 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:10,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-23 22:42:10,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:42:10,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:42:12,495 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:42:12,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:12,500 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:42:12,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:42:12,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:42:12,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:42:12,500 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:42:12,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:12,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:42:12,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:42:12,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration7_Loop [2023-11-23 22:42:12,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:42:12,500 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:42:12,501 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:12,506 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:12,509 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:12,519 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:42:12,565 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:42:12,566 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:42:12,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:12,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:12,567 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:12,574 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 [2023-11-23 22:42:12,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:12,587 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:12,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:12,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:12,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:12,588 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:12,588 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:12,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-23 22:42:12,602 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:12,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:12,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:12,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:12,622 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:12,631 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 [2023-11-23 22:42:12,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:12,658 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:12,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:12,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:12,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:12,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:12,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:12,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-23 22:42:12,670 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:42:12,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:12,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:12,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:12,693 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:12,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-23 22:42:12,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:42:12,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:42:12,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:42:12,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:42:12,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:42:12,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:42:12,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:42:12,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:42:12,726 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:42:12,744 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 22:42:12,744 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-23 22:42:12,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:42:12,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:42:12,750 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:42:12,752 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:42:12,752 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:42:12,752 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:42:12,752 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-23 22:42:12,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-23 22:42:12,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:12,779 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:42:12,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:12,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:42:12,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:13,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:42:13,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:13,126 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2023-11-23 22:42:13,126 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 108 transitions. cyclomatic complexity: 15 Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:13,183 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 108 transitions. cyclomatic complexity: 15. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 105 states and 118 transitions. Complement of second has 18 states. [2023-11-23 22:42:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-23 22:42:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2023-11-23 22:42:13,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 36 letters. Loop has 4 letters. [2023-11-23 22:42:13,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:13,185 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:42:13,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:13,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:42:13,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:13,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:42:13,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:13,476 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2023-11-23 22:42:13,476 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 108 transitions. cyclomatic complexity: 15 Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:13,557 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 108 transitions. cyclomatic complexity: 15. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 111 states and 124 transitions. Complement of second has 17 states. [2023-11-23 22:42:13,558 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 [2023-11-23 22:42:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2023-11-23 22:42:13,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 36 letters. Loop has 4 letters. [2023-11-23 22:42:13,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:13,560 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:42:13,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:13,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:42:13,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:13,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:42:13,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:13,846 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 4 loop predicates [2023-11-23 22:42:13,847 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 108 transitions. cyclomatic complexity: 15 Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:13,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 108 transitions. cyclomatic complexity: 15. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 131 states and 150 transitions. Complement of second has 27 states. [2023-11-23 22:42:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-23 22:42:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2023-11-23 22:42:13,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 36 letters. Loop has 4 letters. [2023-11-23 22:42:13,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:13,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 40 letters. Loop has 4 letters. [2023-11-23 22:42:13,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:13,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 36 letters. Loop has 8 letters. [2023-11-23 22:42:13,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:42:13,916 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 131 states and 150 transitions. [2023-11-23 22:42:13,919 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 22:42:13,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 131 states to 0 states and 0 transitions. [2023-11-23 22:42:13,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-23 22:42:13,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-23 22:42:13,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-23 22:42:13,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:13,920 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:42:13,920 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:42:13,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:13,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 22:42:13,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:42:13,921 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 17 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 11 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 22:42:13,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:13,921 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-23 22:42:13,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-23 22:42:13,921 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 22:42:13,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 22:42:13,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-23 22:42:13,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-23 22:42:13,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-23 22:42:13,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:42:13,922 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:42:13,922 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:42:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:42:13,923 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:42:13,923 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-23 22:42:13,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-23 22:42:13,923 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 22:42:13,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-23 22:42:13,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 10:42:13 BoogieIcfgContainer [2023-11-23 22:42:13,931 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-23 22:42:13,931 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:42:13,932 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:42:13,932 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:42:13,932 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:59" (3/4) ... [2023-11-23 22:42:13,934 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 22:42:13,935 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:42:13,936 INFO L158 Benchmark]: Toolchain (without parser) took 14648.72ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 113.1MB in the beginning and 71.3MB in the end (delta: 41.7MB). Peak memory consumption was 111.3MB. Max. memory is 16.1GB. [2023-11-23 22:42:13,936 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:42:13,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.30ms. Allocated memory is still 153.1MB. Free memory was 113.1MB in the beginning and 124.3MB in the end (delta: -11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:42:13,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.13ms. Allocated memory is still 153.1MB. Free memory was 124.3MB in the beginning and 122.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:42:13,937 INFO L158 Benchmark]: Boogie Preprocessor took 48.03ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 121.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:42:13,937 INFO L158 Benchmark]: RCFGBuilder took 282.13ms. Allocated memory is still 153.1MB. Free memory was 121.4MB in the beginning and 112.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 22:42:13,938 INFO L158 Benchmark]: BuchiAutomizer took 13975.61ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 111.6MB in the beginning and 71.3MB in the end (delta: 40.3MB). Peak memory consumption was 112.6MB. Max. memory is 16.1GB. [2023-11-23 22:42:13,938 INFO L158 Benchmark]: Witness Printer took 3.81ms. Allocated memory is still 222.3MB. Free memory is still 71.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:42:13,940 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.30ms. Allocated memory is still 153.1MB. Free memory was 113.1MB in the beginning and 124.3MB in the end (delta: -11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.13ms. Allocated memory is still 153.1MB. Free memory was 124.3MB in the beginning and 122.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.03ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 121.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 282.13ms. Allocated memory is still 153.1MB. Free memory was 121.4MB in the beginning and 112.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 13975.61ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 111.6MB in the beginning and 71.3MB in the end (delta: 40.3MB). Peak memory consumption was 112.6MB. Max. memory is 16.1GB. * Witness Printer took 3.81ms. Allocated memory is still 222.3MB. Free memory is still 71.3MB. 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 10 terminating modules (6 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. One nondeterministic module has affine ranking function n and consists of 6 locations. 6 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.9s and 8 iterations. TraceHistogramMax:7. Analysis of lassos took 8.5s. Construction of modules took 0.6s. Büchi inclusion checks took 4.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 8. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 68 StatesRemovedByMinimization, 5 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, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 32/70 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 398 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 382 mSDsluCounter, 390 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 226 mSDsCounter, 216 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 720 IncrementalHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 216 mSolverCounterUnsat, 164 mSDtfsCounter, 720 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT1 conc0 concLT1 SILN0 SILU0 SILI1 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp78 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp84 dnf100 smp100 tf112 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-23 22:42:13,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:14,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-23 22:42:14,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:14,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-23 22:42:14,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-23 22:42:14,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-23 22:42:15,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a9d3de-7517-44e1-9c66-412cf0ea77aa/bin/uautomizer-verify-zZY32mL2XJ/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